Lagoon Management & Pre-Treatment Strategies Presented by Rick Allen, CEO, GSD, MSU BioLynceus

Transcription

1 Lagoon Management & Pre-Treatment Strategies Presented by Rick Allen, CEO, GSD, MSU BioLynceus

2 Overview of Class Goals Review Pretreatment Policies and Suggested Goals Explore ways to improve wastewater lagoon operations including: Strategies to keep lagoons working optimally Managing Pathogens Meeting Compliance

3 Synopsis of Pretreatment Regulations The first pretreatment regulations were established in 1972 under the Federal Water Pollution Control Act and in 1977 under the Clean Water Act. These regulations set forth standards mainly for the protection of publicly owned treatment works (POTW). In 1978, the U.S. Environmental Protection Agency (EPA) developed the General Pretreatment Regulations which established mechanisms and procedures for use by state and local pretreatment programs.

4 Pre-Treatment Programs meet the goals to: Regulate the disposal of wastewater into the sewer system Protect the physical structures of the collection system Protect the safety of operation and maintenance personnel of the wastewater collection system Protect wastewater treatment facility receiving sewer materials Comply with all the federal, state and local pretreatment regulations. Protect the health and safety of the public and the environment Basically, if you don t have a program now.. You need to make this a goal for your organization.

5 Benefits of Having Pretreatment Programs Reduce Odors Cost per mile to jet lines and keep lines open Reduce shut-down, clogs and other operational interruptions Remove congestion from pipes and trap stations Reduce contamination by chemical and / or processing materials Improve bio-degradation of solids in treatment processing Reduce expensive costs where budgets are already being cut and reduced

6 Pre-Treatment on Hydrogen Sulfide

7 Your Pretreatment Program Should Include: Regulations for the disposal and/or pretreatment of industrial wastewater (Slaughter House, Containment Pits for Truck Wash Down Areas, etc ) Protect buildings and safety of personnel (H2S Protects the health and safety of the public and the environment (Protect against main breaks, illegal dumping) Compliance with pretreatment regulations required by local, State, and Federal regulations Monitoring of sewer to prevent illegal discharges to the system by monitoring. (CO-Manifest/Pumper Dumping in Kansas)

8 Educate

9 Strategies For Improving Your System. Digestion Financial Considerations Operational Efficiencies Meeting Discharge Regulations

10 Remember this Every Action = Reaction Chemicals Degrade Microbiology Wastewater Treatment Plants use what? Microbiology behaves like teenagers

11 Challenges You Are Facing EPA/ DEQ - NPDES Permitting (Wheatland) Discharge & Zero Discharge Optimization of Waste Treatment Changing rules; BOD, TSS, AN, Phos, PPCP

12 The List Is Growing for WWTP Sludge Solid Management Retro Fitting Ammonia Removal Systems Phosphorus Removal Systems Extension of Existing Plants Extension of Existing Lagoons New WWT Plants and Lagoon Systems What are you getting ready to change?

13 Managing Lagoon Systems Microbiology Pond Maintenance Pathogen Control Sludge Accumulation BOD Problems TSS Control Aeration, Mixing & Dissolved Oxygen Nitrogen & Phosphorous Problems Pond Hydraulics; Short Circuiting

14 Expenses in Wastewater Treatment Aeration Chlorine/Chlorides Polymers Algaecides Calcium Nitrate and others Chemical Treatments: Alum Mechanical Sludge Removal Hauling and Disposal

15 Materials that Degrade. Contaminants weaken wastewater biology Chemicals create microbial deficiencies & systemic imbalances. (CM producers dispose contaminants into wastewater.) Some waste deposits have hazardous waste disposal issues. (Town of Opal)

16 Bio-Augmentation in Wastewater Enhances the natural function of beneficial microbes Essential amino acids aid growth and respiration of native microbes Restores the natural balance of nutrients that enable the natural biota to digest undesirable organics Generates large volumes of oxygen to speed up aerobic and facultative digestion of organics

17 Bio-Augmentation in Wastewater Pro-biological compounds and techniques are used to increase, develop, support and sustain beneficial biological systems to correct problems associated with damaged environments. Probiotics are being used to correct nutrient deficiencies, as well as mitigate contamination problems. EPA

18 Bio-Augmentation Know the Facts CFU: Colony Forming Units Pseudomonads CFU/ml Sample # 3 33,000 - SRD (4) Sample #2 <10 Sample #1 <10

19 Microbiolgy in Action Buffering of Swings Nutrient recycling Clean-up of chemical residue Biological Nutrient Removal: PAO s & GAO s Southern Colorado reduced sludge build-up by 75% in 18 Months using liquid pro-biotic solutions. Decomposition & Pro-Biotic Dredging of solids residues and Organic Matter Development of ecosystem balance (Cannibals I & I)

20 Benefits of Managing Microbiology Increase dissolved oxygen Increase microbial action & waste digestion Reduce total suspended solids & bio-chemical oxygen demand Eliminate most odors and ammonia levels Reduce nitrate and phosphate levels Positive effects on effluent discharge

21 Sludge Management First know your sludge levels & make sure to measure Use good practices to reduce sludge (15% of solids or less) Watch for build-up in areas like corners, where aeration is building up sludge material Use a good blend of circulation, microbial digestion, heat (sun), Ph

22 TSS:BOD TSS:BOD Ratio Causes: < 1 Old Sludge solubilization and release of soluble BOD or Nitrification in the BOD 5 test bottle 1 Poor treatment or short circuiting with loss of untreated wastewater to the effluent (e-coli/fecal) 1.5 Normal for most lagoons 2 & Higher Algae overgrowth Loss of old sludge particles

23 Managing TSS & BOD 11/13/06 TSS 104 mgl BOD 66 mgl 12/11/06 TSS 19 mgl BOD 12 mgl

24 Reduction of Ammonia 6.3 mgl - 11/07/06 ND 07/07/07

25 Short Circuiting Lagoons Poor Design for Aeration Mixing & Stirring Poor Pond Design Sludge Accumulation

26 Pathogen Control Keep surface of lagoon free from: Duckweed; Algae; Aquatic Plants; Floating Debris Maximize retention to allow for exposure to sunlight and agents that kill pathogens Use sunlight, temperature & loading considerations for measuring Fecal Coliform (effluent drawn from 20 cm of discharging ponds late in afternoon to optimize benefit of solar UV Disinfection)

27 Waste Treatment That Can Have. Adverse Impacts on Lagoon Management Aeration/Mixing Chlorine/Chlorides Chemical Treatments Algae & Duckweed Settling & Floc Agents Chemical Toxicity (CM) Mechanical Sludge Removal Peroxides & Over oxygenation

28 Conditions that Negatively Impact Lagoons Typical Problems Digesters Quit Working or Die Ph Swings Sludge Build-up Chemicals that Kill Digestion Too much aeration Outdated or undersized plants Reduced Retention Time Not enough nutrient (Dog Food to Feed Plant) Over Engineering without understanding microbiology Approaches that don t take into account the whole system: duckweed or barley straw for algae control, chemicals to address nitrification,

29 Managing Lagoon Systems Microbiology Pond Maintenance Pathogen Control Sludge Accumulation BOD Problems TSS Control Aeration, Mixing & Dissolved Oxygen Nitrogen & Phosphorous Problems Pond Hydraulics; Short Circuiting

30 BioLynceus: Environmental Solutions Thank you. If we can provide you some additional information please contact: BioLynceus Biological Solutions Corporate: