COMPARISON OF PROCESS ALTERNATIVES FOR ENHANCED NUTRIENT REMOVAL: PERSPECTIVES ON ENERGY REQUIREMENTS AND COSTS
|
|
- Carol Anthony
- 6 years ago
- Views:
Transcription
1 COMPARISON OF PROCESS ALTERNATIVES FOR ENHANCED NUTRIENT REMOVAL: PERSPECTIVES ON ENERGY REQUIREMENTS AND COSTS Derya Dursun 1, Jose Jimenez 1, Aaron Briggs 2 1 Brown and Caldwell, 850 Trafalgar Court, Suite 300 Maitland, FL, Dewberry, 3106 Lord Baltimore Dr, Suite 110, Baltimore, MD, Corresponding author: ddursun@brwncald.com ABSTRACT As part of the Chesapeake Bay Restoration Act s Enhanced Nutrient Removal (ENR), the Maryland Department of Environment (MDE) issued a new permit for the Marlay Taylor Water Reclamation Facility (MTWRF) to reduce the effluent nitrogen and phosphorus loads from the facility to ENR levels. MTWRF has explored cost and energy effective solutions to upgrade the facility to meet the future ENR requirements for total nitrogen (TN) and total phosphorus (TP) limits. Three process alternatives were evaluated in terms of process and energy requirements. A calibrated model was used to determine process requirements. The initial capital cost along with a 15-year present worth analysis was also conducted to compare overall aspects of alternative processes. The footprint of the BioMag process was found to be significantly smaller than other options since this process eliminates the need for adding a secondary clarifier and effluent filters. Hence, this alternative would require notably lower initial capital costs compared to conventional four stage Bardenpho and hybrid IFAS processes. On the other hand, BioMag process was shown to be an energy intensive process due to high mixing requirements and additional energy consumption of the process related equipments. KEY WORDS Process modeling, Energy requirements, Bardenpho, IFAS, BioMag, Cost analysis INTRODUCTION As the nutrient requirements are tightening in the United States, one of the biggest challenges in wastewater treatment has become to reliably meet effluent limits in a sustainable manner. The reliability requirement is driven by the need to meet strict effluent daily or weekly limits set in permits so as to protect the designated uses of the receiving water. Hence, facilities facing with more strict nutrient requirements have to consider a wide and possibly confounding array of treatment technologies to select from. In order to address this issue, EPA has recently published a technical document including process descriptions and operating factors for over 40 different treatment technologies for removing nitrogen, phosphorus, or both from municipal wastewater streams (US EPA, 2009). However, nutrient removal processes comes at a cost to municipal wastewater treatment facilities and their ratepayers. Although funding from various sources might be available, they are not generally sufficient to address all aspects of the necessary improvements for nutrient removal. Another important factor affecting the cost of nutrient removal at wastewater facilities is site limitations on physical expansion of wastewater treatment facilities. Some plants are located in urban areas and do not have any way to obtain the physical space necessary to expand. Space limitations can severely limit the type of processes that can be used to reduce nutrients (Naik and Strenstrom, 2011)
2 It is well known that nutrient removal treatment facilities have a larger environmental impact than secondary treatment processes as a result of the additional energy consumption originated from advanced wastewater treatment processes. It is reported that the addition of ENR technologies such as nitrification/denitrification increases the energy consumption by about an additional 1,500 kwh/mg (Woertz, 2009). Additional power is required for pumping and mixing the biological treatment process to remove nitrogen and phosphorus, and for chemical feed systems and filters. Furthermore, biological removal of nitrogen or phosphorus often requires addition of a supplemental carbon source, such as methanol, ethanol, or volatile fatty acids (VFAs) and also increases the quantity of biosolids requiring disposal. Both the extra energy and extra chemicals increase the carbon footprint of the wastewater treatment process, as well as raising operating costs for the plant in terms of energy costs, chemical costs, and sludge disposal costs (Kang et al, 2009) The Marlay Taylor Water Reclamation Facility (MTWRF) located in Maryland is a 6.0-mgd average daily flow (ADF) plant and is owned and operated by the St. Mary s County Metropolitan Commission (MetCom). The MTWRF currently meets biological nutrient removal (BNR) requirements for total nitrogen concentrations of less than 10 mg/l and discharges secondary effluent to a tributary of the Chesapeake Bay. However, as part of the Chesapeake Bay Restoration Act s Enhanced Nutrient Removal (ENR), the Maryland Department of Environment (MDE) issued a new permit effective on February 01, 2008 to reduce the effluent nitrogen and phosphorus from the facility to ENR levels by August The proposed effluent ENR limit for the MTWRF includes total nitrogen (TN) and total phosphorus (TP) goals of 73,093 lb/year and 5,483 lb/year (corresponds to 4 mg/l and 0.3 mg/l at ADF), respectively. In response to the new ENR effluent discharge permit limits, MetCom is looking for a cost and energy effective solutions to upgrade the MTWRF to meet the future ENR requirements for total nitrogen (TN) and total phosphorus (TP) limits by August Facility Description The MTWRF was originally constructed in The facility was then expended to 4.5 mgd in 1984 and to 6.0 mgd in The 1998 expansion included BNR facilities which consisted of new Schreiber Reactors for nitrification-denitrification. More recently, in 2005, new solids handling facilities were added which includes the sludge thickening facility. Figure 1 shows the current overall process flow schematic for the existing treatment facility. Currently, the liquid treatment of the MTWRF comprises preliminary, primary and secondary treatment, chlorination and dechlorination and reaeration. The effluent from the treatment facility is discharged through outfall to the Chesapeake Bay. The solids produced during treatment are handled onsite. The sludge processing facility at the MTWRF includes sludge holding tanks, sludge thickener, anaerobic digesters, dewatering processes and sludge drying beds.
3 Influent Preliminary Treatment WAS Primary Clarifiers Schreiber Reactors FeCl3 Secondary Clarifiers Cl2 Contact Tank Dechlor / Post - Aeration Effluent PS+WAS RAS Polymer GBT Anaer Dig Anaer Dig Dewatering Drying Beds Disposal Blend Tank Recycle from GBT Thickening Tank Recycle from Rotary Press Figure 1. MTWRF Existing Process Flow Diagram OBJECTIVES The objective of the project was to assess different process options (conventional four-stage Bardenpho, hybrid IFAS process, and an emerging process alternative BioMag) in terms of process, chemical, energy and air requirements to meet upcoming nutrient limits while minimizing energy usage at low cost. Capital and energy costs of the three process alternatives were compared to assess the most feasible option for reaching cost and energy efficient facility. METHODOLOGY BioWin version 3.1 (EnviroSim Associates Ltd., Canada) was used to evaluate the most effective process configurations to meet ENR requirements at the MTWRF. A detailed wastewater characterization study was performed to determine the specific wastewater fractions for model calibration. The process simulator was calibrated using plant s daily historical data from January 2009 through June The dynamic simulations were performed with calibrated process simulator to evaluate three different treatment alternatives to meet the future ENR requirements within the existing reactor volume. RESULTS AND DISCUSSIONS Three process alternatives were evaluated to achieve nutrient removal at the MTWRF. Unlike the processes for Biochemical Oxygen Demand (BOD 5 ) and Total Suspended Solids (TSS) removal, operation of biological processes for nitrogen and phosphorus removal requires advanced knowledge and process control for successful and consistent removal to low effluent levels. In addition, these processes are susceptible to wet weather, cold weather, and inhibitory substances entering the plants. Plant influent characteristics also play a major role on determining tank volumes and chemical requirements. As a result of initial process evaluations, a four-stage Bardenpho process enhanced with chemical precipitation with ferric chloride addition was selected for nitrogen and phosphorus removal. This process recommendation was based on maximizing the capabilities of the existing
4 reactors; hence, minimizing the overall capital cost of the upgrades. However, during initial evaluations, limited information on flows and loads to the facility were available. A detailed analysis of historical data as well as information obtained during the wastewater characterization study conducted at the MTWRF indicated significantly higher loads entering the facility. Furthermore, additional ammonia and phosphorus loads from the filtrate return of dewatering anaerobically digested sludge were characterized in the special sampling campaign. Due to increased wastewater loadings entering into the plant, the original recommendation on process configuration was re-evaluated. Additional alternatives to reduce the capital costs and energy requirements for the upgrade of the MTWRF were considered. It should be noted that the alternatives considered are all based on the original concept of converting the existing Schreiber reactors into four-stage Bardenpho process with supplemental carbon addition. Phosphorus removal would be accomplished by chemical precipitation with ferric chloride. The following three processes were selected for further evaluation; Alternative 1: Conventional Process - Four Stage Bardenpho Alternative 2: Hybrid Process - Four-Stage Bardenpho with Integrated Fixed Film Activated Sludge (IFAS) Carriers Alternative 3: Emerging Process - BioMag Alternative 1: Conventional Process - Four-Stage Bardenpho This alternative consists of the original concept for the upgrade of the MTWRF to meet future ENR requirements. Figure 2 presents a typical process diagram for a four stage Bardenpho process. IMLR Carbon Primary Effluent Pre- Anoxic Aerobic Post- Anoxic Post- Aerobic Sec. Clarifier Effluent RAS Figure 2. Four Stage Bardenpho Process WAS The four-stage Bardenpho process that uses a two-stage activated sludge system to reduce nitrogen to ENR levels is recommended as a conventional process. The first stage of the process comprises an anoxic zone for denitrification followed by an aerobic zone for nitrification. This process uses carbon provided by the raw wastewater for denitrification in the first anoxic zone. This process also incorporates an internal mixed liquor recycle (IMLR) from the first aerobic zone to the first anoxic zone to return nitrified mixed liquor at a regulated rate to ensure adequate nitrates for the heterotrophic denitrification population in the anoxic zone. The second stage of the process uses a second (post) anoxic zone for denitrification with supplemental carbon addition after the aerobic zone. A post aerobic stage is normally required to remove excess
5 carbon and to strip the nitrogen gas from the mixed liquor before the secondary clarifiers to prohibit floating solids. The Schreiber reactors at the MTWRF are a circular, single tank systems that provide both nitrification and denitrification by cycling the aeration on and off with a center-pivot providing for mixing. These reactors operate as completely mixed reactors. Therefore, the conversion of these into four-stage Bardenpho would require extensive modifications to the internals of the tanks. Figure 3 given below shows the possible reactor configurations that were developed for process evaluations. Aerobic (AER 1B) Aerobic (AER 1A) Pre-Anoxic (AX 1B) [PE + RAS] Pre-Anoxic (AX 1A) Post-Aerobic (Post-AER) To Clarifiers Aerobic (AER 1C) IMLR Post-Anoxic (Post-AX) Figure 3. Possible Reactor Configurations for Converting Schreiber Reactors to a BNR Process
6 Alternative 2: Hybrid Process - Four-Stage Bardenpho with Integrated Fixed Film Activated Sludge (IFAS) Carriers As an alternative to conventional four-stage Bardenpho process, the use of Integrated Fixed-Film Activated Sludge (IFAS) carriers is considered in order to supplement the four-stage Bardenpho suspended-growth activated sludge process. The basic principal behind IFAS is to expand treatment capacity or upgrade the level of treatment by supplementing the biomass in a suspended-growth activated sludge process by growing additional biomass on fixed-film media contained within the mixed liquor. The higher biomass constituency allows a more effective rate of treatment within the existing process tanks, therefore, reducing the necessary suspended biomass inventory necessary for treatment. Several advantages in using this type of process are; Higher rate treatment process allows greater treatment in a smaller footprint Additional biomass for treatment without increasing solids loadings on the final clarifiers Similar operation to conventional Four-Stage Bardenpho Minimal additional operating cost Improved resistance to toxic shock and washout This hybrid process uses a four-stage Bardenpho configuration with the main difference of having the carriers (IFAS media) in the aerobic section of the reactor to maximize nitrification at lower solids retention times. This would allow upgrading the MTWRF without the need of any additional ENR reactor and/or secondary clarifier capacity. For the purpose of process evaluations, an IFAS system provided by AnoxKaldnes was considered. Alternative 3: Emerging Process- BioMag This emerging technology can be applied to conventional process with the advantage of eliminating the need of any additional ENR reactor and/or clarification capacity. BioMag is a ballasted flocculation-aid wastewater treatment process that uses magnetite to increase the specific gravity of biological floc. Magnetite (Fe 3 O 4 ) is an inert iron ore, with a specific gravity of 5.2 and a strong affinity for biological solids. Magnetite substantially increases the settling rate of the biomass. This provides the opportunity to increase the active mixed liquor concentration in the biological system, while still maintaining adequate settling and thickening in the secondary clarifiers (Catlow and Woodard, 2009). For the MTWRF, the BioMag process would allow to operate at elevated active mixed liquor concentrations without affecting its overall capacity, eliminating the need for additional reactor capacity to meet ENR requirements. Virgin and recovered magnetite are blended with mixed liquor or RAS in the magnetite mix tank. The ballasted mixed liquor then flows to the aeration tank, and then on to the secondary clarifier, where the solids settle and thicken. The majority of the resultant sludge (with ballast) is returned to the aeration tank via the RAS line. Waste sludge (WAS) is pumped through a shear mixer and then to the magnetic recovery drum, where the ballast is recovered and sent for blending with the mixed liquor in the magnetite mix tank. The excess biological solids (minus the magnetite) are wasted to sludge processing. Magnetite deposition at the floor of the reactor in cases with poor or limited mixing is a concern of the BioMag process. It is noted that mixing is influenced by the shape of basins with the configuration being preferred.
7 Comparison of Process Requirements Detailed process design was carried out by using calibrated BioWin model to evaluate process requirements for the conversion of the existing secondary BNR process at the MTWRF to fourstage Bardenpho facility. Based on the process analysis, significant increase in secondary clarification capacity would be required to handle 6 mgd ADF if conventional four stage Bardenpho process is preferred.a hybrid process using a four stage Bardenpho configuration equipped with biofilm carriers in the aerobic section of the reactor allows maximizing nitrification at lower solids retention times. This alternative allows upgrading the MTWRF without the need of any additional ENR reactor and/or secondary clarifier capacity and treat 6 mgd ADF. Both conventional and hybrid processes require filtration facility after secondary treatment not to impair effluent requirements. BioMag process can be applied to conventional four stage Bardenpho process with the advantage of eliminating the need of any additional ENR reactor and/or clarification capacity; and the need for a new filtration facility. BioMag process could also treat up to 7.5 mgd ADF without impairing the effluent quality, whereas other processes could only reach 6 mgd ADF even with additional reactor, and secondary clarifier volumes. The effluent quality is compatible between three process options despite the BioMag process not having filters. Table 1 summarizes important process requirements for three alternatives at 6 mgd ADF. Figure 4 shows the total footprint of process alternatives. Parameter Table 1. Process Requirements for Alternatives Conventional Process Hybrid Process Four Stage Bardenpho IFAS Emerging Process BioMag Total Primary Clarifier Area, ft 2 11,458 11,458 11,458 Total Reactor Volume, MG Anoxic Zone Aerobic Zone Post Anoxic Zone Post Aerobic Zone Aerated SRT, days 12 4 (suspended), MLSS Concentration, mg/l 3,400 1,500 3,800 IMLR Flow, mgd Total Secondary Clarifier Area, ft 2 21,225 14,860 14,860 RAS Capacity, mgd SVI, ml/g Required Filter Area, ft Not required Average Sludge Production (Primary+WAS), lbs/d 14,500 17,000 13,500
8 Footprint, ft2/ft3/day Four Stage Bardenpho IFAS BioMag Figure 4. Footprint of Alternative Processes Besides process modifications, all three processes would require chemical additions to ensure meeting the effluent requirements. Table 2 summarizes the annual average (and maximum average month) chemical addition requirements for all alternatives. However in addition to these chemicals, BioMag process might necessitate the addition of polymers and coagulants for magnetite sorption. Table 2. Chemical Requirements for Alternatives at Design Conditions Process Target Dosage Location Quantity Alkalinity [Sodium hydroxide, 50% solution] Denitrification [Micro C-Glycerin] Chemical P Removal [Ferric chloride, 33% Solution] Influent to the biological reactors (splitter box) Influent to the post anoxic zone with flexibility to add carbon to pre-anoxic zone Secondary clarifiers splitter box with flexibility to add coagulant to secondary influent 125 (150) 280 (350) 450 (550) Comparison of Air and Mixing Requirements Based on the process analysis, conventional four stage Bardenpho process would have the lowest air requirement. Since, higher Dissolved Oxygen (DO) concentration would be necessary for IFAS process, air requirement of the IFAS alternative would be significantly higher than the conventional option. Furthermore, in the zones where media is included into the process, medium bubble diffusers would be utilized. It is known that medium bubble diffusers requires more process air than a fine bubble diffused air system to provide the same level of treatment. BioMag process also requires higher air flow compared to conventional processes. The aeration requirements of the BioMag system for fine bubble diffusers are given in Table 3. As the table shows, ranges of aeration requirements were defined for fine bubble diffusers to cover the uncertainties and risks associated with the selection of the design alpha value. In order to minimize spaces where the magnetite could accumulate in the aerobic zone, a minimum diffuser density of at least 10 percent was adopted for the BioMag system. In cases where the aeration
9 demands did not meet the minimum mixing requirement of 0.12 scfm/ft 2, the airflow rate was driven by mixing. Based on these results, the range for average and peak hour airflow rates for the fine bubble diffuser system are approximately 5,300 to 6,550 standard cubic feet per minute (scfm) and 9,720 to 12,140 scfm (total airflow rate), respectively. Two blowers would be sufficient to provide process air requirements of the three alternatives. Mixing could be supplied by 8 mixers in anoxic zones for 4 stage Bardenpho and hybrid options whereas BioMag option would need additional mixing in aeration zones to keep the magnetite in suspension. A total of 12 mixers would be essential for BioMag option. Table 2 lists the details of the air and mixing requirements for all alternatives. Table 3. Comparison of Air and Mixing Requirements Parameter Conventional Process Four Stage Bardenpho Hybrid Process IFAS Aeration System Fine Bubble diffuser Medium Bubble in IFAS zone Emerging Process BioMag Fine Bubble diffuser Fine bubble in other zones Max Month Air Requirement, scfm 5,050 6,500 5,300-6,550 Peak Hour Air Requirement, scfm 9,400 11,000 9,720-12,140 Number of Blowers Avg Aeration Power Requirement, hp Total Number of Mixers Avg Mixing Power Requirement, hp Comparison of Annual Energy Requirements Daily energy requirement of three processes were compared in Table 4. Based on the analysis, conventional 4 stage Bardenpho process would have the lowest energy demand, followed by the hybrid-ifas process. BioMag process would require higher energy mainly due to the energy requirement of process related equipments and additional mixing in aeration zones. Table 4. Comparison of Average Energy Requirements Parameter Conventional Process Four Stage Bardenpho Hybrid Process IFAS Emerging Process BioMag Aeration Requirements, kwh/day 4,890 5,433 5,795 Mixing Requirements, kwh/day ,223 Total Filter Related Demand, kwh/day BioMag Equipment Related Demand (incl mixers, ballast feed air compressors, shear mills, separators and pumps) kwh/day 0 0 1,976 Figure 5 depicts the total annual energy consumption of the processes based on the information provided in Table 4. As indicated in Figure 5, BioMag process proves to be an energy intensive technology. Ballast mixers, ballast feed air compressors, shear mills, magnetic drum separators and pumps increase the energy demand of the BioMag process significantly. However, conventional and hybrid processes would need filters which also requires pumping of the entire flow through the filters. The energy consumption of pumping through the filters did not included in this analysis since this would highly vary depending on the location of the new filter facility.
10 Annual Energy Consumption, MW.h However, the difference in energy requirements of the options might reduce drastically if it requires significant pumping to pass the flow through the filters. 4,500 4,000 3,500 3,000 2,500 2,000 1,500 1, Four Stage Bardenpho IFAS BioMag Figure 5. Total Annual Energy Consumption of the Process Alternatives Capital Costs The initial capital costs were developed for each alternative at 6 mgd ADF. Capital and energy costs were then used in present worth analysis of each alternative. Table 5 summarizes the capital costs associated with each process. Based on this analysis, conventional process would require the highest capital cost since this process would need additional secondary clarifiers, filters, modifications in chlorine tank and also a diversion pond to protect shellfish population. Table 5. Initial Capital Costs for Alternative Processes Parameter Conventional Process Four Stage Bardenpho Hybrid Process IFAS Emerging Process BioMag Blowers $675,000 $675,000 $675,000 Proprietary Equipment $0 $1,500,000 $3,300,000 Building/Infrastructure $0 $0 $400,000 Filters $3,200,000 $3,200,000 $0 Floc Chamber $150,000 $150,000 $0 Chlorine Tank Modifications $11,650 $11,650 $0 Secondary Clarifiers $2,300,000 $0 $0 Shellfish Diversion Pond $400,000 $400,000 $0 Total Initial Capital Cost $6,736,650 $5,936,650 $4,450,000 On the other hand, BioMag process eliminates the need of filters, additional secondary clarifier, and other modifications necessary to meet permit requirements. Hence, the initial capital cost of this emerging process would be significantly lower than the conventional process.
11 Present Worth Analysis As a basis for comparing the various options, a present worth analysis was conducted. The capital costs were already inflated to 2011 dollars which represent the present worth. Energy and maintenance costs were multiplied by annual present worth factors that provide the present worth for a series of values for a 15-year period (Lowe et al, 2011). An interest rate of 4.67% was used in analysis. Figure 6 exhibits 15-year present worth value of each alternative. $12,000,000 $10,000,000 $8,000,000 $6,000,000 $4,000,000 $2,000,000 $0 Four Stage Bardenpho IFAS BioMag Figure year Present Worth Value Based on this analysis, present worth value of three alternatives was quite similar. Conventional Four stage Bardenpho process resulted slightly higher value compared to other two alternatives. CONCLUSIONS The footprint, energy, chemical and capital costs associated with three treatment alternatives were compared for the MTWRF in order to meet ENR requirements. Significant increase in total process footprint would be required if conventional four stage Bardenpho process is preferred. However, the energy consumption of this alternative would be notably lower, especially compared to BioMag process. IFAS process would allow upgrading the MTWRF without the need of any additional ENR reactor and/or secondary clarifier capacity. The energy requirement of this process would be slightly higher than the conventional process but relatively lower from BioMag alternative. The BioMag process would provide more capacity without building additional unit. On the other hand, the process is energy intensive compared to other options. Chemical consumption of IFAS and Bardenpho processes would be similar, whereas BioMag process might necessitate the addition of polymers and/or coagulant for magnetite sorption. Initial capital cost of BioMag process would be significantly lower than other alternatives. The 15-year present worth value of three alternatives was found comparable.
12 REFERENCES Catlow I., Woodard S. (2009) Ballasted Biological Treatment Process Removes Nutrients and Doubles Plant Capacity, WEFTEC Proceedings, Orlando, FL. Kang, S.J., Olmstead K.P., Takacs K., Wheeler J. and Zharaddine P.(2009) Energy Sustainability and Nutrient Removal from Wastewater, WEFTEC Proceedings, Orlando, FL. Lowe K., Kemp D., Cassady G., Pangasa V. and Cullen C. (2011) Maximizing Operations Efficiency for Wastewater Utilities:Consolidation Evaluation for the City of St. Petersburg WEFTEC Proceedings, Los Angeles, CA. Naik K., and Strenstrom M. (2011) Economic and Feasibility Analysis of Process Selection and Resource Allocation in Decentralized Wastewater Treatment for Developing Regions, WEFTEC Proceedings, Los Angeles, CA. U.S. EPA (2009), Nutrient Control Design Manual EPA 600-R , Cincinnati, OH. Woertz I., Fulton L., Lundquist T. (2009) Nutrient Removal & Greenhouse Gas Abatement with CO2 Supplemented Algal High Rate Ponds, WEFTEC Proceedings, Orlando, FL.
The Municipality of North Grenville
A solution is required to increase the peak flow capacity of the Kemptville WPCP, a conventional activated sludge process, within a small footprint while maintaining good effluent quality. Location: Kemptville
More informationBEING GOOD STEWARDS: IMPROVING EFFLUENT QUALITY ON A BARRIER ISLAND. 1.0 Executive Summary
BEING GOOD STEWARDS: IMPROVING EFFLUENT QUALITY ON A BARRIER ISLAND Brett T. Messner, PE, Tetra Tech, Inc., 201 E Pine St, Suite 1000, Orlando, FL 32801 Brett.Messner@tetratech.com, Ph: 239-851-1225 Fred
More informationPresentation Outline
Presentation Outline Nitrification/denitrification refresher Treatment technologies available for nitrification and BNR/ENR What is the problem? BNR/ENR VPDES permitting Causes of reduced BNR performance
More informationMembrane Bioreactor and High Flow Biological Treatment System for the Cox Creek WRF
Membrane Bioreactor and High Flow Biological Treatment System for the Cox Creek WRF Thor Young, GHD With Contributions from Vince Maillard, Rip Copithorn, Kristi Perri, and Jeff Sturdevant, GHD Dimitrios
More informationPalmer Wastewater Treatment Plant Environmental Impacts. A summary of the impacts of this treatment alternative are listed below:
6.1.3 Environmental Impacts A summary of the impacts of this treatment alternative are listed below: 1. The Matanuska River will receive treated effluent as it currently does. 2. Effluent quality would
More informationEfficient Design Configurations for Biological Nutrient Removal
Efficient Design Configurations for Biological Nutrient Removal A Case Study: Upper Blackstone Water Pollution Abatement District Jane E. Madden, P.E., BCEE August 30, 2017 UBWPAD Wastewater Treatment
More informationOperation and Control of Multiple BNR Processes in One WWTP
Operation and Control of Multiple BNR Processes in One WWTP CENTRAL PLANT Williamsport Sanitary Authority s Chesapeake Bay and CSO Compliance Program Presented by: Phil Anderson 1 June 24, 2015 Purpose
More informationThe following biological nutrient removal processes were evaluated in detail in the 2016 Liquid Processing Facilities Plan:
Nitrite Shunt Pilot Project Purpose: The purpose of this project is to full scale pilot test the nitrite shunt biological nutrient removal process to confirm process design criteria, impacts to sludge
More informationNutrient Removal Optimization at the Fairview WWTP
Alyssa Mayer, PE Principal Engineer Nutrient Removal Optimization at the Fairview WWTP Mark Strahota, PE Associate Presentation Overview Project Background Process Model Development BNR Design Considerations
More informationAltoona Westerly Wastewater Treatment Facility BNR Conversion with Wet Weather Accommodation
Pennsylvania Water Environment Federation PennTEC Annual Technical Conference June 4, 2013 Altoona Westerly Wastewater Treatment Facility BNR Conversion with Wet Weather Accommodation Presented by: Jim
More information2015 Spring Conference
2015 Spring Conference Meeting Strict Summer Permit Requirements on Day One: Start-up of the Western Wake Regional Water Reclamation Facility Chris White, PE April 13, 2015 Acknowledgements Town of Cary
More informationPreparing for Nutrient Removal at Your Treatment Plant
Summer Seminar Emerging Issues in the Water/Wastewater Industry Preparing for Nutrient Removal at Your Treatment Plant Rajendra P. Bhattarai, P.E., BCEE Austin Water Utility Ana J. Peña-Tijerina, Ph.D.,
More informationOWEA Annual Technical Conference and Exhibition Upgrading WRFs for Biological Nutrient Removal. June 25, 2015
OWEA Annual Technical Conference and Exhibition Upgrading WRFs for Biological Nutrient Removal June 25, 2015 Agenda Permitting and Planning BNR Overview Case Example Innovative Approaches Proactive Participation
More information- 1 - Retrofitting IFAS Systems In Existing Activated Sludge Plants. by Glenn Thesing
- 1 - Retrofitting IFAS Systems In Existing Activated Sludge Plants by Glenn Thesing Through retrofitting IFAS systems, communities can upgrade and expand wastewater treatment without the expense and complication
More informationA Critical New Look at Nutrient Removal Processes
A Critical New Look at Nutrient Removal Processes Thomas E. Wilson,* John McGettigan* *Earth Tech, Inc. 675 North Washington Street Alexandria, Virginia 22314 ABSTRACT This paper questions the basic practice
More informationAmerican Water College 2010
Vocabulary Activated Sludge (Part 1) Activated Sludge Sludge particles produced in raw or settled wastewater (primary effluent) by the growth of organisms (including zoogleal bacteria) in aeration tanks
More informationAppendix D JWPCP Background and NDN
Appendix D JWPCP Background and NDN JWPCP Background JWPCP Water Quality Primary Clarifiers HPO Reactors Final Clarifiers Unit Influent Primary Effluent Secondary Effluent BOD mg/l 460 240
More informationNEWEA 2015 Annual Conference Session 16
NEWEA 2015 Annual Conference Session 16 Meeting North Attleborough, MA s 0.1 mg/l Phosphorus Limit with Bio-P and Cloth Media Filters January 27, 2015 Sue Guswa, P.E., Tighe & Bond Merrill Hastings, Town
More informationWASTEWATER TREATMENT SYSTEM
WASTEWATER TREATMENT SYSTEM PrintStudioOne.com Nelson Environmental Inc. The Nelson Environmental OPTAER system is an efficient pond-based wastewater treatment solution utilized in a broad spectrum of
More informationAquaPASS. Aqua MixAir System. Phase Separator. System Features and Advantages. Anaerobic. Staged Aeration. Pre-Anoxic.
PHASED ACTIVATED SLUDGE SYSTEM PHASED ACTIVATED SLUDGE SYSTEM Aqua-Aerobic Systems has led the industry in time-managed, biological technology since 1984. In 2004, Aqua-Aerobic applied its expertise in
More informationA Battle to Be the Best: A Comparison of Two Powerful Sidestream Treatment Technologies: Post Aerobic Digestion and Anammox
A Battle to Be the Best: A Comparison of Two Powerful Treatment Technologies: Post Aerobic Digestion and Anammox David Oerke/CH2M Tom Johnson/CH2M Bruce Johnson/CH2M Heidi Bauer/CH2M Steve Graziano/CH2M
More informationSECTION 8.0 NEWPCC SECOND PRIORITY CONTROL ALTERNATIVES
SECTION 8.0 NEWPCC SECOND PRIORITY CONTROL ALTERNATIVES 8.1 PREAMBLE Table 8.1 below indicates the target ammonia concentrations for the Best Practicable and the Second Priority Levels of Control for the
More informationNutrient Removal Processes MARK GEHRING TECHNICAL SALES MGR., BIOLOGICAL TREATMENT
Nutrient Removal Processes MARK GEHRING TECHNICAL SALES MGR., BIOLOGICAL TREATMENT Presentation Outline 1. Nutrient removal, treatment fundamentals 2. Treatment strategies Treatment methods: CAS, SBR,
More informationReview of WEFTEC 2016 Challenge & Overview of 2017 Event. Malcolm Fabiyi, PhD, MBA Spencer Snowling, PhD. P.Eng
Review of WEFTEC 2016 Challenge & Overview of 2017 Event Malcolm Fabiyi, PhD, MBA Spencer Snowling, PhD. P.Eng Agenda Review 2016 Challenge Provide overview of updates to 2017 event Frequency WEFTEC Scores
More informationDesign, Construction and Startup of the First Enhanced Nutrient Removal Plant in Maryland Funded by the Chesapeake Bay Restoration Fund
Design, Construction and Startup of the First Enhanced Nutrient Removal Plant in Maryland Funded by the Chesapeake Bay Restoration Fund Rip Copithorn, Jeff Sturdevant, Vince Maillard GHD Clients People
More informationCSR Process Simulations Can Help Municipalities Meet Stringent Nutrient Removal Requirements
CSR Process Simulations Can Help Municipalities Meet Stringent Nutrient Removal Requirements Continuous Flow Sequencing Reactor (CSR) Basin with Moving Bridge, Submerged Diffusers, and Stationary Diffusers
More informationGlobal Leaders in Biological Wastewater Treatment
Global Leaders in Biological Wastewater Treatment OVERVIEW OF ANOXKALDNES AnoxKaldnes is a global provider of leading-edge biological processes for wastewater treatment. The head-office is in Sweden. There
More informationW O C H H O L Z R E G I O N A L W A T E R R E C L A M A T I O N F A C I L I T Y O V E R V I E W
Facility Overview The recently upgraded and expanded Henry N. Wochholz Regional Water Reclamation Facility (WRWRF) treats domestic wastewater generated from the Yucaipa-Calimesa service area. The WRWRF
More informationWe Know Water. AnoxKaldnes. Moving Bed Biofilm Reactor (MBBR) Integrated Fixed-Film Activated Sludge (IFAS) and ANITA Mox Deammonification
We Know Water AnoxKaldnes Moving Bed Biofilm Reactor (MBBR) Integrated Fixed-Film Activated Sludge (IFAS) and ANITA Mox Deammonification WATER TECHNOLOGIES AnoxKaldnes MBBR and Hybas Processes AnoxKaldnes
More informationWWTP Side Stream Treatment of Nutrients Considerations for City of Raleigh s Bioenergy Recovery Project. Erika L. Bailey, PE, City of Raleigh
WWTP Side Stream Treatment of Nutrients Considerations for City of Raleigh s Bioenergy Recovery Project Erika L. Bailey, PE, City of Raleigh LNBA / NRCA 2017 Wastewater Treatment Plant Operators Training
More information20 Years of Nutrient Removal City of Beloit
20 Years of Nutrient Removal City of Beloit Leon Downing, PhD, PE, & Bill Marten, PE, BCEE Donohue Harry Mathos & Nate Tillis City of Beloit IWEA Nutrient Removal and Recovery Workshop September 12, 2013
More informationContents General Information Abbreviations and Acronyms Chapter 1 Wastewater Treatment and the Development of Activated Sludge
Contents Contents General Information Abbreviations and Acronyms... 6 Chapter 1 Wastewater Treatment and the Development of Activated Sludge... 8 The Importance of Wastewater Treatment... 8 The Scope of
More informationWASTEWATER TREATMENT PLANT MASTER PLAN 6. BUSINESS CASE EVALUATION OF ALTERNATIVES
WASTEWATER TREATMENT PLANT MASTER PLAN 6. BUSINESS CASE EVALUATION OF ALTERNATIVES A range of potential ammonia limits were identified for alternatives evaluation, as discussed in Section 2.2.5. This chapter
More informationPost-Aerobic Digester with Bioaugmentation Pilot Study City of Meridian, ID WWTP PNCWA 2010
Post-Aerobic Digester with Bioaugmentation Pilot Study City of Meridian, ID WWTP by: William Leaf Adrienne Menniti Bruce Johnson CH2M HILL, Inc. Clint Dolsby Tracy Crane City of Meridian October 26, 21
More informationWe Know Water. AnoxKaldnes. Moving Bed Biofilm Reactor (MBBR) Integrated Fixed-Film Activated Sludge (IFAS) and ANITA Mox Deammonification
We Know Water AnoxKaldnes Moving Bed Biofilm Reactor (MBBR) Integrated Fixed-Film Activated Sludge (IFAS) and ANITA Mox Deammonification WATER TECHNOLOGIES AnoxKaldnes MBBR and Hybas Processes AnoxKaldnes
More informationMeeting SB1 Requirements and TP Removal Fundamentals
Meeting SB1 Requirements and TP Removal Fundamentals June 5, 2017 Agenda SB1 requirements for P TP removal mechanisms Biological removal Chemical removal SB No. 1 Requirements for Phosphorus ** WWTP /
More informationTWO YEARS OF BIOLOGICAL PHOSPHORUS REMOVAL WITH AN ADVANCED MSBR SYSTEM AT THE SHENZHEN YANTIAN WASTEWATER TREATMENT PLANT
TWO YEARS OF BIOLOGICAL PHOSPHORUS REMOVAL WITH AN ADVANCED MSBR SYSTEM AT THE SHENZHEN YANTIAN WASTEWATER TREATMENT PLANT Chester Yang, Ph.D., Gaowei Gu, Baowei Li, Hongyuan Li, Wanshen Lu, Lloyd Johnson,
More informationMaximizing Nutrient Removal in an Existing SBR With a Full-Scale BioMag Demonstration
Maximizing Nutrient Removal in an Existing SBR With a Full-Scale BioMag Demonstration Brian L. Lubenow 1 *, Steven Woodard 2, David W. Stewart 1, Rachel A. Kirkham 1 1 CDM 2 Cambridge Water Technology
More information2015 HDR, Inc., all rights reserved.
2015 HDR, Inc., all rights reserved. Hastings Utilities Water Pollution Control Facility Improvements Brian Bakke, HDR ASCE Environmental Conference 4/6/2017 Review Existing Facilities Need for the Project
More informationCOMPARISON OF SBR AND CONTINUOUS FLOW ACTIVATED SLUDGE FOR NUTRIENT REMOVAL
COMPARISON OF SBR AND CONTINUOUS FLOW ACTIVATED SLUDGE FOR NUTRIENT REMOVAL Alvin C. Firmin CDM Jefferson Mill, 670 North Commercial Street Suite 201 Manchester, New Hampshire 03101 ABSTRACT Sequencing
More informationAnoxKaldnes. Moving Bed Biofilm Reactor (MBBR) and Integrated Fixed-Film Activated Sludge (IFAS)
AnoxKaldnes Moving Bed Biofilm Reactor (MBBR) and Integrated Fixed-Film Activated Sludge (IFAS) AnoxKaldnes MBBR and Hybas Processes AnoxKaldnes is the global leader in MBBR and IFAS technologies. Kruger,
More informationComparison of Three Wet Weather Flow Treatment Alternatives to Increase Plant Capacity
CSWEA 2013 Comparison of Three Wet Weather Flow Treatment Alternatives to Increase Plant Capacity Don Esping, Denny Parker, Jose Jimenez, Fenghua Yang, Tim Bate, Steve Arant May 16 2013 Milwaukee MSD South
More informationISAM SBR with Blower Assisted Jet Aeration Design Calculations For Lyons, CO WWTP Upgrade
ISAM SBR with Blower Assisted Jet Aeration Design Calculations For Lyons, CO WWTP Upgrade May. 28, 2013 A. Site Conditions 1. Site elevation = 5,322 ft MSL 2. Average barometric pressure = 12.07 psia 3.
More informationWet Weather and Advanced Treatment: Procurement Strategies to Secure the Right Technology
OWEA Annual Conference Mason, OH June 19, 2013, Operations, 11:00-11:45AM Wet Weather and Advanced Treatment: Procurement Strategies to Secure the Right Technology Bill Meinert, PE, O Brien & Gere Often
More informationCOLD WEATHER NITRIFICATION OF LAGOON EFFLUENT USING A MOVING BED BIOFILM REACTOR (MBBR) TREATMENT PROCESS
ABSTRACT COLD WEATHER NITRIFICATION OF LAGOON EFFLUENT USING A MOVING BED BIOFILM REACTOR (MBBR) TREATMENT PROCESS Mr. Flemming G. Wessman 1 and Mr. Chandler H. Johnson 1 AnoxKaldnes, Inc., 58 Weybosset
More informationRE ENGINEERING O&M PRACTICES TO GET NITROGEN & PHOSPHORUS REMOVAL WITHOUT FACILITY UPGRADES
RE ENGINEERING O&M PRACTICES TO GET NITROGEN & PHOSPHORUS REMOVAL WITHOUT FACILITY UPGRADES GRANT WEAVER, PE & WASTEWATER OPERATOR WISCONSIN WASTEWATER OPERATORS ASSOCIATION WISCONSIN DELLS, WI OCTOBER
More informationRefinement of Nitrogen Removal from Municipal Wastewater Treatment Plants
Refinement of Nitrogen Removal from Municipal Wastewater Treatment Plants Prepared for Maryland Department of the Environment Presented by: Gannett Fleming, Inc. Stephen B. Gerlach, PE & Carrie DeSimone
More informationAt the Mercy of the Process Impacts of Nitrogen Removal Performance on WWTP Disinfection
OBG PRESENTS: At the Mercy of the Process Impacts of Nitrogen Removal Performance on WWTP Disinfection Ned Talbot, PE Tri-Association Conference 2018 8/30/18 9:00-9:30AM AGENDA Overview of Plant Processes
More informationEmerging Issues in the Water/Wastewater Industry. Austin s Full-Scale Step-BNR Demonstration
Summer Seminar Emerging Issues in the Water/Wastewater Industry Austin s Full-Scale Step-BNR Demonstration Rajendra P. Bhattarai, P.E., DEE Austin Water Utility, City of Austin 625 East 10 th Street, Suite
More informationModule 17: The Activated Sludge Process - Part III Answer Key
Module 17: The Activated Sludge Process - Part III Answer Key What other differences can you see between Complete Mix and Step Aeration? One of the features that make Complete Mix Aeration different from
More informationPLANNING FOR NUTRIENT REMOVAL: WHAT STEPS CAN WE BE TAKING NOW?
PLANNING FOR NUTRIENT REMOVAL: WHAT STEPS CAN WE BE TAKING NOW? LEONARD E. RIPLEY, PH.D., P.E., BCEE SENIOR PROCESS ENGINEER FREESE AND NICHOLS, INC. General Action Categories 1. Collect wastewater characterization
More informationSimultaneous Nutrient Removal: Quantification, Design, and Operation. Leon Downing, Ph.D., PE Donohue & Associates
Simultaneous Nutrient Removal: Quantification, Design, and Operation Leon Downing, Ph.D., PE Donohue & Associates Simultaneous Nutrient Removal Simultaneous nitrification, denitrification, and potentially
More informationBIOLOGICAL WASTEWATER BASICS
BIOLOGICAL WASTEWATER BASICS PRESENTATION GOALS EXPLAIN DIFFERENT TYPES OF WASTEWATER EXPLAIN THE DIFFERENT BIOLOGICAL SYSTEMS AND HOW THEY FUNCTION. COMPARE AND CONTRAST AEROBIC AND ANAEROBIC SYSTEMS
More informationCOMPARISON STUDY BETWEEN INTEGRATED FIXED FILM ACTIVATED SLUDGE (IFAS), MEMBRANE BIOREACTOR (MBR) AND CONVENTIONAL ACTIVATED SLUDGE (AS) PROCESSES
Sixteenth International Water Technology Conference, IWTC 16 2012, Istanbul, Turkey 1 COMPARISON STUDY BETWEEN INTEGRATED FIXED FILM ACTIVATED SLUDGE (IFAS), MEMBRANE BIOREACTOR (MBR) AND CONVENTIONAL
More informationAqua MSBR MODIFIED SEQUENCING BATCH REACTOR
MODIFIED SEQUENCING BATCH REACTOR MODIFIED SEQUENCING BATCH REACTOR For over three decades, Aqua-Aerobic Systems has led the industry in sequencing batch reactor technology with performance proven and
More informationWaste Water Treatment Plant Overview and Tour
Waste Water Treatment Plant Overview and Tour Outline Definitions Chronology BNR Process Description Plant Performance Site Photos Definitions SWPCC: Summerside Water Pollution Control Centre Activated
More informationTHE BIOMAG SYSTEM FOR ENHANCED SECONDARY TREATMENT
MAGNETITE-BALLASTED CLARIFICATION ENABLES THIS 18-FT DIAM. CLARIFIER TO HANDLE 2.3 MGD. DENSE FLOC SETTLES IMMEDIATELY BENEATH THE CENTER WELL, RATHER THAN DISSIPATING THROUGHOUT THE CLARIFIER. THE BIOMAG
More informationDipankar Sen, PhD, PE Santa Clara Valley Water District Professor, Virginia Tech Civil & Env Engr
Dipankar Sen, PhD, PE Santa Clara Valley Water District Professor, Virginia Tech Civil & Env Engr Outline Changes in wastewater in our industry How it affects the wastewater treatment plant Advanced Wastewater
More informationWatertown Wastewater Facility Plan. August 11, 2015
Watertown Wastewater Facility Plan August 11, 2015 Watertown Wastewater Wastewater Treatment Facility History Comprehensive Planning Wastewater Concerns Capacity Condition Permitting Requirements Watertown
More informationAppendix C: TM T-49 Nampa WWTP Capacity Assessment
Appendix C: TM T-49 Nampa WWTP Capacity Assessment C-1 Use of contents on this sheet is subject to the limitations specified at the end of this document. Final Facility Plan_v2_DEQReview_1.22.19.docx City
More informationComparison of Three Wet Weather Flow Treatment Alternatives to Increase Plant Capacity
OWEA 2013 Comparison of Three Wet Weather Flow Treatment Alternatives to Increase Plant Capacity Don Esping, Denny Parker, Jose Jimenez, Fenghua Yang, Tim Bate, Steve Arant June 19 2013 Outline Background/Goals
More informationAMMONIA REMOVAL USING MLE PROCESS EXPERIENCES AT BALLARAT NORTH. David Reyne. Central Highlands Water Authority
AMMONIA REMOVAL USING MLE PROCESS EXPERIENCES AT BALLARAT NORTH Paper Presented by : David Reyne Author: David Reyne, Plant Operator Wastewater Treatment, Central Highlands Water Authority 65 th Annual
More informationWASTEWATER DEPARTMENT. Bentonville Wastewater Treatment Plant Facts:
Mission: The mission of the Bentonville Wastewater Treatment Utility and staff is to protect public health and the environment through the effective treatment of wastewater. Effective wastewater treatment
More informationGeneral Information on Nitrogen
General Information on Nitrogen What is nitrogen? Nitrogen was discovered in 1772 by Daniel Rutherford in Scotland Nitrogen gas makes up nearly 80% of the air we breathe Nitrogen gas is not toxic Nitrogen
More informationUPGRADING FOR TOTAL NITROGEN REMOVAL WITH A POROUS MEDIA IFAS SYSTEM
UPGRADING FOR TOTAL NITROGEN REMOVAL WITH A POROUS MEDIA IFAS SYSTEM T. Masterson, J. Federico, G. Hedman, S. Duerr BETA Group, Inc. 6 Blackstone Valley Place Lincoln, Rhode Island 02865 ABSTRACT The Westerly,
More informationAquaNereda Aerobic Granular Sludge Technology
Aerobic Granular Sludge AquaNereda Aerobic Granular Sludge Technology The AquaNereda Aerobic Granular Sludge (AGS) Technology is an innovative biological wastewater treatment technology that provides advanced
More informationCity of Elk River Wastewater Treatment Facility Improvements. Achieving Wastewater Treatment Goals
City of Elk River Wastewater Treatment Facility Improvements Achieving Wastewater Treatment Goals By Tejpal Bala, P.E. Bolton & Menk, Inc. The City of Elk River received a new NPDES permit and the existing
More informationBiological Phosphorus Removal Technology. Presented by: Eugene Laschinger, P.E.
Biological Phosphorus Removal Technology Presented by: Eugene Laschinger, P.E. Overview What is phosphorus and why do we care? How can you remove phosphorus? Biological phosphorus removal Biological phosphorus
More informationGeneral Operational Considerations in Nutrient and Wet Weather Flow Management for Wastewater Treatment Facilities Part II
General Operational Considerations in Nutrient and Wet Weather Flow Management for Wastewater Treatment Facilities Part II Samuel Jeyanayagam, PhD, PE, BCEE Julian Sandino, PhD, PE, BCEE Ohio WEA Plant
More informationBIOLOGICAL PHOSPHORUS REMOVAL PLUS CHEMICAL POLISHING FOR LOW LEVEL COMPLIANCE
BIOLOGICAL PHOSPHORUS REMOVAL PLUS CHEMICAL POLISHING FOR LOW LEVEL COMPLIANCE Nathan Cassity, Donohue Lake Michigan District Regional Operators Meeting May 21, 2015 Presentation Outline Background BPR
More informationBioprocess Intelligent Operating System -Beyond Ammonia Control-
Bioprocess Intelligent Operating System -Beyond Ammonia Control- BioChem Technology, Inc. King of Prussia, PA May 20, 2015 Company Milestones 1978 Incorporation of BioChem Technology, Inc. as a pharmaceutical
More informationAMPC Wastewater Management Fact Sheet Series Page 1
Nitrogen removal Nitrogen present in meat processing wastewater are termed a nutrient, since they are essential elements for life. They largely derive from proteins dissolved into wastewater from meat
More informationAMPC Wastewater Management Fact Sheet Series Page 1
Nitrogen removal Nitrogen present in meat processing wastewater are termed a nutrient, since they are essential elements for life. They largely derive from proteins dissolved into wastewater from meat
More informationPHOSPHORUS REMOVAL: TREATMENT
PHOSPHORUS REMOVAL: TREATMENT TECHNOLOGIES AND CAPABILITIES Jane Madden, PE, BCEE Senior Vice President CAWPCA Fall Workshop November 14, 2014 Agenda Phosphorus Removal Overview Phosphorus Regulations
More informationUpgrading Lagoons to Remove Ammonia, Nitrogen, and Phosphorus *nutrient removal in cold-climate lagoon systems
Upgrading Lagoons to Remove Ammonia, Nitrogen, and Phosphorus *nutrient removal in cold-climate lagoon systems October 7, 2015 3:15 4:00pm Session M Room Tamboti / Aloes-wood Treatment Processes Aerated
More informationMBBR Technology: - A cost effective solution for upgrading existing Waste water Treatment Works. Bruno Bigot
MBBR Technology: - A cost effective solution for upgrading existing Waste water Treatment Works Bruno Bigot Agenda 1. What is MBBR & How does it work? 2. Different MBBR configurations for upgrading existing
More informationNorth Side WRP Master Plan Research and Development Department 2006 Seminar Series October 27, 2006 Metropolitan Water Reclamation District of
North Side WRP Master Plan Research and Development Department 2006 Seminar Series October 27, 2006 Metropolitan Water Reclamation District of Greater Chicago Today s Goals Discuss project background Provide
More informationAdvances in Nitrogen and Phosphorus Removal at Low DO Conditions
Advances in Nitrogen and Phosphorus Removal at Low DO Conditions Pusker Regmi Vail Operator Training Seminar 13 October, 2016 Wastewater Treatment and Energy The water quality industry is currently facing
More informationBallasted Activated Sludge Demonstration Study SEPTEMBER 30, 2016
Ballasted Activated Sludge Demonstration Study SEPTEMBER 30, 2016 Agenda Riverbend WRP Expansion Project Background Ballasted Activated Sludge Process Overview Special Equipment Overview Peninsula WRP
More informationMasses at Massillon: IFAS for Industrial Loads and Nutrient Removal
OWEA Annual Conference, Sandusky, OH, Wednesday, June 24, 3:00-3:45 PM Masses at Massillon: IFAS for Industrial Loads and Nutrient Removal Kristin Waller, O Brien & Gere Kristin.Waller@obg.com #obgpresents
More informationNEW BIOLOGICAL PHOSPHORUS REMOVAL CONCEPT SUCCESSFULLY APPLIED IN A T-DITCH PROCESS WASTEWATER TREATMENT PLANT
NEW BIOLOGICAL PHOSPHORUS REMOVAL CONCEPT SUCCESSFULLY APPLIED IN A T-DITCH PROCESS WASTEWATER TREATMENT PLANT ABSTRACT C. Yang*, L. Zhou**, W. Luo***, and L. Johnson**** *Corstar International Corp. 111
More informationCopies: Mark Hildebrand (NCA) ARCADIS Project No.: April 10, Task A 3100
MEMO To: Jeff Pelz (West Yost) Kathryn Gies (West Yost) Copies: Mark Hildebrand (NCA) ARCADIS U.S., Inc. 200 Harvard Mills Square Suite 430 Wakefield Massachusetts 01880 Tel 781 224 4488 Fax 781 224 3033
More informationWater Technologies. The AGAR Process: Make Your Plant Bigger Without Making it Bigger
Water Technologies The AGAR Process: Make Your Plant Bigger Without Making it Bigger Enhanced Wastewater Treatment The unique, patented AGAR (Attached Growth Airlift Reactor) process from Siemens is the
More informationTWO YEAR CASE STUDY OF INTEGRATED FIXED FILM ACTIVATED SLUDGE (IFAS) AT BROOMFIELD, CO WWTP West 124th Street Broomfield, CO 80020
ABSTRACT TWO YEAR CASE STUDY OF INTEGRATED FIXED FILM ACTIVATED SLUDGE (IFAS) AT BROOMFIELD, CO WWTP Mr. Ken Rutt 1, Jim Seda 1 and Mr. Chandler H. Johnson 2 1 City & County of Broomfield 2985 West 124th
More informationDuffin Creek Water Pollution Control Plant Technical Information
Duffin Creek Water Pollution Control Plant Technical Information Plant History The Duffin Creek Water Pollution Control Plant (WPCP) is located on the northern shore of Lake Ontario in the City of Pickering
More informationCase Study. Biological Help for the Human Race. Bathurst Municipal Wastewater Treatment Works, New South Wales, Australia.
Case Study BiOWiSH Aqua Bathurst Municipal Wastewater Treatment Works, New South Wales, Australia BiOWiSH Aqua Executive Summary The main objective of the study was to quantify the cost savings of using
More informationFull Scale Testing to Demonstrate Anaerobic Selector Effect for Low Strength Wastewater
OWEA State Conference June 20, 2012 Full Scale Testing to Demonstrate Anaerobic Selector Effect for Low Strength Wastewater Presenters Bill Donohue NEORSD Bob Hrusovsky MWH Don Esping BC Easterly Plant
More informationWEFTEC.06. **Cobb County Water System, Marietta, Georgia
CHEMICALLY ENHANCED PRIMARY TREATMENT FOR A LARGE WATER RECLAMATION FACILITY ON A CONSTRICTED SITE - CONSIDERATIONS FOR DESIGN, START-UP, AND OPERATION ABSTRACT Jeffrey A. Mills, P.E., BCEE,* Roderick
More informationEast Coast P Removal Technology Performance Summary
East Coast P Removal Technology Performance Summary Charles B. Bott Hampton Roads Sanitation District NonReactive Phosphorus Workshop Spokane, Washington August 11 12, 2009 Acknowledgements Numerous slides
More informationBOD5 REMOVALS VIA BIOLOGICAL CONTACT AND BALLASTED CLARIFICATION FOR WET WEATHER M. COTTON; D. HOLLIMAN; B. FINCHER, R. DIMASSIMO (KRUGER, INC.
BOD REMOVALS VIA BIOLOGICAL CONTACT AND BALLASTED CLARIFICATION FOR WET WEATHER M. COTTON; D. HOLLIMAN; B. FINCHER, R. DIMASSIMO (KRUGER, INC.) Bench-scale testing was conducted to quantify the effectiveness
More informationEVALUATING ALTERNATIVES FOR DISPOSING OF WATER PLANT SOLIDS INTO A WASTEWATER PLANT
EVALUATING ALTERNATIVES FOR DISPOSING OF WATER PLANT SOLIDS INTO A WASTEWATER PLANT Matthew Valade, P.E. July 25, 2014 Barboe.pptx Presentation Outline Project Background Why Dewater Croton Residuals Offsite?
More informationOPTIMIZATION STUDY OF THE ST. MARY'S WASTEWATER TREATMENT PLANT
XCG File No.: 3-167-09-02 October 26, 2016 OPTIMIZATION STUDY OF THE ST. MARY'S WASTEWATER TREATMENT PLANT Prepared for: B.M. ROSS & ASSOCIATES LIMITED 62 North Street Goderich, Ontario N7A 2T4 Prepared
More informationSecondary Treatment Process Control
SARBS One-Day Training Seminar Phoenix Club, Anaheim Secondary Treatment Process Control Graham Juby June 5, 2013 Objectives Provide an understanding of nitrogen removal process interactions to support
More informationWe Know Water. AnoxKaldnes. Moving Bed Biofilm Reactor (MBBR) Integrated Fixed-Film Activated Sludge (IFAS) and ANITA Mox Deammonification
APPENDIX C.2 IFAS We Know Water AnoxKaldnes Moving Bed Biofilm Reactor (MBBR) Integrated Fixed-Film Activated Sludge (IFAS) and ANITA Mox Deammonification WATER TECHNOLOGIES AnoxKaldnes MBBR and Hybas
More informationPILOT SCALE TESTS OF A UNIQUE APPROACH FOR BNR UPGRADE OF A SHORT SRT HIGH PURITY OXYGEN SYSTEM AT PIMA COUNTY, AZ
PILOT SCALE TESTS OF A UNIQUE APPROACH FOR BNR UPGRADE OF A SHORT SRT HIGH PURITY OXYGEN SYSTEM AT PIMA COUNTY, AZ ABSTRACT Ron Riska,: Pima County Wastewater Management Division Joseph A. Husband, P.E.,
More informationCoupling Trickling Filter or RBC s with Activated Sludge
Coupling Trickling Filter or RBC s with Activated Sludge By John R. Harrison, P.E. Kennedy/Jenks Consultants 503-295-4911 or JohnHarrison@KennedyJenks.com 1. What are Combined or Coupled Plants? Most coupled
More informationJames Winslade Instructor, Environmental Resources Training Center Southern Illinois University-Edwardsville
James Winslade Instructor, Environmental Resources Training Center Southern Illinois University-Edwardsville In Memory of Steven Fiepke Chief Operator Village of Algonquin WWTP Skilled in Operation Dedicated
More informationENHANCING THE PERFORMANCE OF OXIDATION DITCHES. Larry W. Moore, Ph.D., P.E., DEE Professor of Environmental Engineering The University of Memphis
ENHANCING THE PERFORMANCE OF OXIDATION DITCHES Larry W. Moore, Ph.D., P.E., DEE Professor of Environmental Engineering The University of Memphis ABSTRACT Oxidation ditches are very popular wastewater treatment
More informationCLR Process. Vertical Loop Configuration
CLR Process Vertical Loop Configuration Vertical Configuration System Flexibility Parallel Operation Raw wastewater and return activated sludge are introduced at a single point in each standard CLR basin.
More informationWaste water treatment
Waste water treatment Responsible water management means the treatment and disposal of the generated waste water, for which suitable and effective wastewater treatment plants and systems are needed. Based
More information