Introduction to flocculation
|
|
- Hester Austin
- 6 years ago
- Views:
Transcription
1 Introduction to flocculation With upgrading we understand, the further processing of the final products from the enrichment stages in a process. This is valid both concerning the valuable minerals (the concentrate) and the waste minerals (the tailings). In the first case upgrading means improving the product value by bringing the concentrate to transportability or into a completely dry form. Processing can also go further to calcining and sintering. On the tailing side upgrading means that waste material (wash water, process effluents etc.) is properly taken care of in order to protect the environment, to recover process water and to turn certain portions into valueables. Upgrading by methods Sedimentation Mechanical Dewatering Clarification/Thickening Gravity (Conventional) Low Pressure Clarification/Thickening Medium Pressure (Compact) High Pressure Thermal drying Thermal processing Direct Calcining Indirect Sintering (pelletizing) Upgrading by operation costs Upgrading has its price, increasing with the energy input for removal of the process water (or process liquid). The rules are simple! 1. Can we do the job with sedimentation only? If not - how far can we reach by sedimentation thereby saving money in the following dewatering stage? 2. How far can we reach with mechanical dewatering? Can we save a thermal stage by increasing the dewatering pressure? 3. If the particles are coarse, can gravity dewatering do the job? The cost is close to the same as for sedimentation. 4. If thermal dewatering is needed, can energy be saved in drying by improved mechanical dewatering? Sedimentation Sedimentation is a continuous solid-liquid separation process with settling of solids by gravity. Clarification is the process for removal of solids from a dilute solid/liquid suspension. Thickening is the process for concentrating particles in a supension by gravity compression Flocculation All sedimentation technologies are related to particle size. One way of improving the settling speed generally is therefore to increase the size of the particles. Fine particles can be connected together by coagulation or flocculation. The settling rate of the combined particles will be higher than that of each individual particle. Coagulation: Surface charges are neutralized by addition of chemicals of opposite charge. Ex: Fe+++ (iron sulphate) Al+++ (aluminium sulphate) Ca++ (lime) A coagulated aggregate will reform after breaking (e.g. pumping). The curves above must always be considered when we are selecting equipment for an upgrading circuit for concentrate drying or disposal of a washing effluent. Flocculation: Polymeres with molecule chains which physically link the particles together (mechanical bridging). A flocculated aggregate will not reform after breaking. 1
2 Flocculation System A handling system is needed for flocculant utilisation. This comprises provision to mix, store and dilute the polymer. The dilute polymer is then mixed with the feed slurry and allowed to condition (or age) before a sedimentation or dewatering process. Flocculation - addition and mixing time Conventional Clarifier Clarification is achieved when the liquid upstream velocity VL is lower than the sedimentation velocity of the solids VS 2
3 Conventional Clarifier sizing Clarifier diameter is selected to give a suitable upstream velocity (m/h). This is also expressed as Surface Load, meaning the volume of slurry m 3 /h fed per m 2 of clarifier surface. Typical surface areas are given below. Example: A wash water (100 m 3 /h) coming from a sand operation needs to be clarified. Surface load is 0.5 m 3 /h/m 2. Select clarifier diameter. Required area is: 100/0.5 = 200 m 2 = required diameter = 15.9 = 200 where d is Select a 16 m clarification tank! Note! When thickening is also a critical part of the sedimentation process, the tank diameter has to be cross-checked with the diameter for thickener duty, see next page. Conventional Thickener Continuous thickening to give the required solids concentration in the underflow depends on balancing the volumetric solids flow rate at a critical concentration with the diameter of the thickener. 3
4 Conventional Thickeners Sizing Thickener selection is based upon the unit area, defined as m2 of thickener area required per tph of solids. Typical figures for unit area are given below. Clarification/ thickening cross checking (metric) Clarification and thickening are process definitions. The equipment can be applied to both duties. If this is the case we have to select the tank area for each duty and select the largest of the two. Example: Cu concentrate (k80= 80 μm), 10 t/h or 18m³/h Surface load (with flocculation) = 1.5 m/h Unit area = 2 m²/(t/h) Clarification area = 18/ 1.5 = 12 m² Thickening area = 10x2 = 20 m² Select a Clarifier / Thickener of 20m², diameter 5 m. 4
5 Conventional Clarifier/Thickener Design Bridge type For smaller thickeners, up to m diameter, the rakes and drive mechanism are supported on a bridge superstructure, which straddles the tank as shown. Centre Pier type For tanks over m diameter a bridge structure will be imractical. The mechanism and rakes are therefore supported from a centre pier and the bridge is only used for access and to support feed pipe and launder. Design options Up to 20 m elevated tank with underflow at ground level. Above 20 m tank at ground level with underflow in a tunnel. 5
6 Conventional Clarifier/Thickener Drive system Drive mechanism For bridge and centre pier mounting. Options with and without automatic rake lifting system. Automatic torque monitoring. Slewing ring bearing to accommodate out of balance loads on rakes. Worm and wheel and multistage epicyclic gearbox drive. Conventional clarifier/thickener control Torque is electronically detected and monitored. Increased torque is a sign that the solids loading in the thickener may be building up. This could indicate a process problem (change in feed, blocked underflow etc.). In all these cases rakes and drive have to be protected. Conventional clarifier/thickener drives torque definitions 10 year Torque The torque loading at which the drive head will have a calculated wear life of 10 years (also called equivalent torque). Cut Out Torque Nominal 3000 hours wear life. App. 3 x 10 year torque. If the monitoring system detects a torque above this level the drive head will stop and a alarm will be raised in order to protect the rakes. Peak Torque Practical maximum torque. App. 2 x cut out torque. 6
7 Conventional Clarifier/Thickener Drive Sizing Duty classification Typical duties 1. Water treatment, river or lake water clarification, metallic hydroxides, brine clarification. 2. Magnesium hydroxide, lime softening, brine softening. 3. Copper tails, iron tails, coal refuse tails, coal, zinc or lead concentrates, clay, titanium oxide and phosphate tails. 4. Uranium counter-current decantation (CCD), molybdenum sulphide. 5. Iron oxide concentrates, magnetite, iron pellet feed, ilmenite. Examine solids loading or specifications to determine whether duty is thickening or clarification. Proceed to relevant section to select drive head. Drive head torque rating BN and CN = drives without lifting BL and CL = drives with lifting 7
8 Clarifier drive selection Clarifiers, operate with a low solids loading and drives are selected according to formula below Tc = KxD 2 Tc = Process Cut Off torque (Nm) K = Clarifier duty factor (see below) D = Clarifier Diameter (m) Duty factor: Select a drive head from the Drive Head Torque values above, so that the specified cut out torque is greater then calculated Tc. Example: Select a bridge mounted drive head for a 35 m diameter clarifier (no lift required). Application: lime sludge clarifying. K factor = 210 giving a Tc = 210 x 35² = Nm. Select a drive head type BN 24, cut out torque Nm. Example: Select a pier mounted drive head with a lift suitable for a 50 m diameter thickener handling an underflow of 130 tph of solids. Te = 256x50x 130 = Nm. Select CL 28 drive head with a 10 year torque of Nm. Thickener drive selection Here we are calculating with Process Equivalent Torque (or 10 year torque), according to formula: Te = 256 x D x M Te D M = Process Equivalent Torque = Thickener diameter (m) = Solids in underflow (tph), see duty above Select a drive head from the Drive Head Torque values above, so that the 10 year torque is greater than Te calculated above. 8
9 Conventional Clarifier/Thickener Areas Conventional Clarifier/Thickener Tank Depth Use minimum depth if feed volume flow rate is less than 1.2 m3/m2,h. Conventional Clarifier/ Thickener Tank Bottom Slope For small thickeners no slope restrictions (up to 45 O ). For larger diameter thickeners (>dia 45 m) a two-slope tank is recommended for height saving reasons. Inner 1/3 (9 O ) out 2/3 (5 O ) Slope for 1/3 of dia 165 mm/m (9 degrees) Slope for 2/3 dia (outer) 80 mm/m (5 degrees) 9
Nomination for 2014 Hardrock Mining Reclamation Awards Colorado Mined Land Reclamation Board Colorado Mining Association
Nomination for 2014 Hardrock Mining Reclamation Awards Colorado Mined Land Reclamation Board Colorado Mining Association Nominee: Permit: Climax Molybdenum Company Climax Mine Highway 91 Fremont Pass Climax,
More informationYour defined goals and objectives:
About us GECO GmbH was founded in 1977 as a private owned business by Josef Schlusche ( 2005). The company headquarters are located in Ketsch near Heidelberg. HOME Our customers: Administrative building
More informationSelection of Tailings Paste Thickener. 17 February Norris September / Rebecca Kirkwood
Clermont Coal Mine Project Selection of Tailings Paste Thickener AusIMM Technical Meeting 17 February 2010 Norris September / Rebecca Kirkwood Topics > Project Overview > Metallurgical Design Considerations
More informationCTB3365x Introduction to Water Treatment
CTB3365x Introduction to Water Treatment W2c Primary sedimentation Jules van Lier The screened and de-gritted sewage is further conveyed towards the biological treatment step. Can we remove some part of
More informationCOPPER PRECIPITATION AND CYANIDE RECOVERY PILOT TESTING FOR THE NEWMONT YANACOCHA PROJECT
COPPER PRECIPITATION AND CYANIDE RECOVERY PILOT TESTING FOR THE NEWMONT YANACOCHA PROJECT Michael Botz, Elbow Creek Engineering, Billings, MT Sevket Acar, Newmont Mining Corporation, Englewood, CO Introduction
More informationCHAPTER 1 INTRODUCTION. customer base of over seven million in Peninsula Malaysia and Sabah ( TNB, 2010 ).
CHAPTER 1 INTRODUCTION Tenaga Nasional Berhad (TNB) is the largest electricity utility company in Malaysia with an estimate of RM 71.4 billion worth in assets. The company is listed on the main board of
More informationDEBOTTLENECKING OF THICKENERS IN A CHANGING ENVIRONMENT
1 White paper DEBOTTLENECKING OF THICKENERS IN A CHANGING ENVIRONMENT Brad Parker, Thomas Rivett, Paul Backeberg, Andrew McIntosh, Sherif El-Masry and Alex Heath Dewatering, Minerals Processing, Outotec
More informationDefinition separation of unstable and destabilized suspended solids from a suspension by the force of gravity
SEDIMENTATION-1 TEKNOLOGI PENGOLAHAN LIMBAH Definition separation of unstable and destabilized suspended solids from a suspension by the force of gravity 1 Applications in Wastewater Treatment grit removal
More informationREACTION TANKS ADVANCED MEMBRANE FILTRATION
REACTION TANKS ADVANCED MEMBRANE FILTRATION Memtek EFC-Series Microfiltration System A MAJOR ADVANTAGE FOR RELIABLE WASTEWATER TREATMENT OR PROCESS FILTRATION SYSTEMS THAT GIVE YOU GREATER FLEXIBILITY
More informationDramatic Improvements at Margajita River at Pueblo Viejo Gold Mine Carlos Tamayo, MBA, PhD, PE Environmental Manager
Dramatic Improvements at Margajita River at Pueblo Viejo Gold Mine Carlos Tamayo, MBA, PhD, PE Environmental Manager Overview Background Legacy of Environmental issues ETP Overview Dramatic Results 3 Pueblo
More informationLowering The Total Cost Of Operation
Lowering The Total Cost Of Operation The system removes more solids than conventional clarification, so filters can run longer between backwash cycles. Fewer backwash cycles means less backwash water,
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 informationWastewater Treatment Processes
Wastewater Treatment Processes CEL212 Environmental Engineering (2 nd Semester 2010-2011) Dr. Arun Kumar (arunku@civil.iitd.ac.in) Department of Civil Engineering Indian Institute of Technology (Delhi)
More informationDomestic Waste Water (Sewage): Collection, Treatment & Disposal
Domestic Waste Water (Sewage): Collection, Treatment & Disposal Sanitary sewers Storm water sewers Combined sewers Types of sewers: Types of collection system Building sewer/building connections:connected
More informationexperience and innovations
More than 50 years of development, experience and innovations MECHANICAL SCREENING / HEADWORKS Lackeby Wire bar screen Coarse screen suitable for deep and wide channels Wire-driven with no submerged bearings
More informationFOR MINERAL AND MINING SLURRIES WITH HIGH SOLIDS CONCENTRATION
CDF VACUUM DISC FILTERS FOR MINERAL AND MINING SLURRIES WITH HIGH SOLIDS CONCENTRATION HIGH RATE FILTRATION LOW FINAL CAKE MOISTURE LOW ENERGY CONSUMPTION CONTINUOUS OPERATION HIGH AVAILABILITY WITH MINIMAL
More informationIMPLEMENTATION OF A HIGH DENSITY SLUDGE "HDS" TREATMENT PROCESS AT THE BOLIDEN APIRSA MINE SITE
MINE, WATER & ENVIRONMENT. 1999 IMW A Congress. Sevilla, Spain IMPLEMENTATION OF A HIGH DENSITY SLUDGE "HDS" TREATMENT PROCESS AT THE BOLIDEN APIRSA MINE SITE Nural Kuyucak\ Manfred LindvalF, J.A. Rufo
More informationSOFI FILTER Self-cleaning microfilter from 1 µm
SOFI FILTER Self-cleaning microfilter from 1 µm Sofi Filtration Ltd, together with the Department of Materials Science and Engineering at Aalto University of Finland, has developed a new type of dynamic
More informationWorldwide Pollution Control Association
Worldwide Pollution Control Association WPCA-Duke Energy FGD Wastewater Treatment Seminar March 7, 2013 All presentations posted on this website are copyrighted by the Worldwide Pollution Control Association
More informationWorldwide Pollution Control Association
Worldwide Pollution Control Association WPCA-Southern Company Wastewater Treatment Seminar April 16 & 17, 2013 All presentations posted on this website are copyrighted by the Worldwide Pollution Control
More informationNalco technologies for mining industry
Nalco technologies for mining industry Mining & Mineral Processing 2 As the global leader in Process & Water Treatment, Nalco Company provides essential expertise to the Mining & Mineral Processing industry
More informationWODCON XXI, June 2016, Miami, Florida Some Proven Benefits of Polymer Use in the Treatment of Sediments in Recent Dredging Projects
, 13-17 June 2016, Miami, Florida Some Proven Benefits of Polymer Use in the Treatment of Sediments in Recent Dredging Projects by Alexis Boisson and Francois Couturier, SNF, France Agenda Introduction
More informationFlue Gas Desulphurization (FGD) plant 2 x 600 MW Coal based Thermal power plant Cuddalore, Tamil Nadu. By MK Parameswaran 23 rd Dec, 2016
Flue Gas Desulphurization (FGD) plant 2 x 600 MW Coal based Thermal power plant Cuddalore, Tamil Nadu. By MK Parameswaran 23 rd Dec, 2016 Introduction Flue Gas Desulfurization is a process of removing
More informationCLIMAX X MAGNETIC SEPARATOR
CLI USA, Inc. CLIMAX X MAGNETIC SEPARATOR The CLIMAX X high efficiency wet drum magnetic separators are designed for use in heavy media circuits for the recovery of magnetite or ferrosilicon. The separators
More informationInnovative Activated Iron Solids Treatment and Iron Oxide Recovery from Various High Flow AMD
Innovative Activated Iron Solids Treatment and Iron Oxide Recovery from Various High Flow AMD By Jon Dietz, Ph.D. Iron Oxide Technologies, LLC dietzetal@adelphia.net www.dgengr.com AIS Pilot Study Locations
More informationTotal Clean System. Taking the lead with your Solids Control Needs!
Total Clean System Taking the lead with your Solids Control Needs! Del Tank & Filtration Systems patented TOTAL CLEAN SYSTEM is used for the removal of solids from slurries that are common in the Dredging,
More informationTreat oily waste with decanter centrifuge plants
Treat oily waste with decanter centrifuge plants 02.01.2012 Hertle, A., Hiller GmbH, Vilsbiburg, Germany Turning a challenge into an opportunity Oily wastes are a normal byproduct of many operations carried
More informationseparation. Division Solutions
Division Separation Solutions A LEADER IN CENTRIFUGATION The Pieralisi Group provides solutions to all technological problems of solid-liquid and solid-liquid-liquid separation, thanks to the great experience
More informationGeotechnical Performance of ATA -Treated Fluid Fine Tailings
Geotechnical Performance of ATA -Treated Fluid Fine Tailings T. Moore, Thurber Engineering Ltd., Canada C. Zhang, Thurber Engineering Ltd., Canada M. Pinheiro, Thurber Engineering Ltd., Canada Outline
More informationProposal by Russia to delete hot spot 18.2
Proposal by Russia to delete hot spot 18.2 1. Hot spot Central Aeration Station 2. Location 1, Bely Island, St. Petersburg 3. Reasons for designation of hot spot Discharges of phosphorus higher than requirements
More informationJungzhina Water Treatment Plant Thimpu, Bhutan
Jungzhina Water Treatment Plant Thimpu, Bhutan 1. Background Information Thimphu, the capital and the largest city of Bhutan, is situated in the western central part of the country. The water supply for
More informationMagnetic field. Figure 1. Wet drum magnetic separators for heavy media application. Self-levelling counter-rotation tank style.
Magnetic field Daniel Norrgran, Eriez, North America, describes the operation of wet drum magnetic separators for heavy media application, operation and performance. Figure 1. Wet drum magnetic separators
More informationChemical. & Industrial. Processes
Chemical & Industrial Processes 2 Ever since its creation in 1882, FLSmidth has been characterized by innovative thinking and a desire to find the best possible technological solutions. Today, FLSmidth
More informationComparative Evaluation of Thickened versus Slurry Tailings Surface Disposal D. Johnson Golder Associates Ltd., Canada R. Moghaddam Golder Associates
Comparative Evaluation of Thickened versus Slurry Tailings Surface Disposal D. Johnson Golder Associates Ltd., Canada R. Moghaddam Golder Associates Ltd., Canada I. Bin Ahmed Golder Associates Ltd., Canada
More informationENVIRONMENTAL ENGINEERING-I
ENVIRONMENTAL ENGINEERING-I Prof. Rajesh Bhagat Asst. Professor Civil Engineering Department Yeshwantrao Chavan College Of Engineering Nagpur B. E. (Civil Engg.) M. Tech. (Enviro. Engg.) GCOE, Amravati
More informationSTARVED ACID LEACH TECHNOLOGY (SALT) CONCEPTUAL STUDY. InCoR Holdings Plc MINING AND METALLURGY. April 2014 REPORT Rev. 00 > Internal ref.
STARVED ACID LEACH TECHNOLOGY (SALT) CONCEPTUAL STUDY InCoR Holdings Plc MINING AND METALLURGY April 2014 REPORT Rev. 00 > Internal ref. 140226 Document Number: 140226-0000-49ER-0001 Date: 28/04/2014 Revision:
More informationMcClean Lake Site Guide. AREVA Resources Canada Inc.
McClean Lake Site Guide AREVA Resources Canada Inc. McClean Lake Located over 700 kilometres northeast of Saskatoon, AREVA s McClean Lake site is comprised of several uranium mines and the newest, most
More informationEnergy Optimized Resource Recovery Project Presented By: Curtis Czarnecki, P.E.
Kenosha Wastewater Treatment Plant Energy Optimized Resource Recovery Project Presented By: Curtis Czarnecki, P.E. Kenosha Water Utility March 22, 2016 WWTP Service Area Overview Population: 110,000 Service
More informationMcClean Lake Site Guide. AREVA Resources Canada Inc.
1 McClean Lake Site Guide AREVA Resources Canada Inc. 1 McClean Lake Located over 700 kilometres northeast of Saskatoon, AREVA s McClean Lake site is comprised of several uranium mines and one of the most
More informationAn Introduction to The Design of Long Distance Slurry Pipelines. Angus Paterson
Presentation at the 46 th Annual IPLOCA Convention An Introduction to The Design of Long Distance Slurry Pipelines Presented by: Angus Paterson Managing Director, Paterson & Cooke Aims of Presentation
More informationProposal by Russia to delete hot sub-spot Hot sub-spot name South-West Wastewater Treatment Plant
Proposal by Russia to delete hot sub-spot 18.4 LAND 14/2009, Document 6/3/Rev.1 ATTACHMENT 1. Hot sub-spot name South-West Wastewater Treatment Plant 2. Location Block 2, 123, Volkhonskoye shosse, St.
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 informationMagnetic Conditioning of Flotation Feed to Increase Recovery of Fine Value Minerals at Boliden s Garpenberg Concentrator
Magnetic Conditioning of Flotation Feed to Increase Recovery of Fine Value Minerals at Boliden s Garpenberg Concentrator Hamid-Reza Manouchehri (Ph.D.), Sandvik Mining, Sweden Hassna Aitahmed-Ali & Stellan
More informationLiquid Stream Fundamentals: Grit Removal
FACT SHEET Liquid Stream Fundamentals: Grit Removal Grit removal is an essential component of the wastewater treatment process. Not only does the removal of grit help protect downstream equipment from
More informationPhosphate recovery from wastewater with engineered superparamagnetic composite particles using magnetic separation
4th International Symposium Re-Water Braunschweig Phosphate recovery from wastewater with engineered superparamagnetic composite particles using magnetic separation A. Drenkova-Tuhtan, K.-S. Mandel, F.
More informationWater Treatment Overview. Gabe Sasser December 2016
Water Treatment Overview Gabe Sasser December 2016 Topics of Discussion Source Water Information Treatment Plants (History and Capacity) Water Quality Water Treatment Process Distribution System Conservation
More informationCommunition Abstract. Fine grind attritional mills; can they or should they go coarser. D Capstick and B Currie
Communition 2012 Abstract Fine grind attritional mills; can they or should they go coarser D Capstick and B Currie Since the introduction of fine grind attritional mills a number of years ago they have
More informationEconomical dewatering of tailings for mine backfill with high performance disc filters
Mine Fill 2014 Y Potvin and AG Grice (eds) 2014 Australian Centre for Geomechanics, Perth, ISBN 978-0-9870937-8-3 https://papers.acg.uwa.edu.au/p/1404_01_hahn/ Economical dewatering of tailings for mine
More informationProven solutions in ore processing
Proven solutions in ore processing Several customers rely on Larox solutions for their most demanding processes. Larox valves and pumps have proven their superior quality, reliability, excellent wear resistance
More informationKashi Banerjee Ph.D.; P.E.; BCEE. Moon Township, PA Andrea Laybauer
Metals Precipitation Kashi Banerjee Ph.D.; P.E.; BCEE Veolia Water Solutions & Technologies Moon Township, PA 15108 Andrea Laybauer Introduction Metals in Mining Wastes Type of Mines and Ore Characteristics
More informationWater Solutions for the Mining Industry
Water Solutions for the Mining Industry Resourcing the world WATER TECHNOLOGIES Creating water solutions for the mining industry Veolia Water Technologies can provide specialised water systems thanks to
More informationOUTOTEC ROASTING SOLUTIONS
OUTOTEC ROASTING SOLUTIONS Outotec roasting solutions are based on our decades of experience in developing processing technologies for concentrates and ores. Safe, easy, and cost-efficient to operate,
More informationInnovative Use of Screw Press Filtration in Tailings Dewatering Plant Design
Innovative Use of Screw Press Filtration in Tailings Dewatering Plant Design V J Absolon 1 and D Nieuwkerk 2 ABSTRACT Screw press technology is an innovative approach to tackling the growing pressure to
More informationVALLIAMMAI ENGINEERING COLLEGE DEPARTMENT OF CIVIL ENGINEERING Question Bank CE2354 - ENVIRONMENTAL ENGINEERING - II Prepared By: Year: 3rd year Semester: 6th Semester R.THENMOZHI / A.P.Civil J.SHANMUGAPRIYA
More informationCEDAR CREEK Wastewater Treatment Facility
CEDAR CREEK Wastewater Treatment Facility Where does the waste originate Private homes Businesses from? Condominium complexes Nursing homes Apartments ANY DWELING THAT USES WATER AND IS CONNECTED TO THE
More informationPolishing Ponds. Biosolids Storage. Ammonia Removal. Digesters. Thickeners. Pretreatment. Final Clarifiers. Primary Clarifiers.
Wastewater Treatment Facility (2012) Polishing Ponds Biosolids Storage Ammonia Removal Digesters Thickeners Pretreatment Primary Clarifiers Activated Sludge Final Clarifiers OVERVIEW Whenever a home, business,
More informationRecovery of Iron Bearing Minerals from Beneficiation Plant 2 Thickner Underflow of JSW Steel Limited
Journal of Minerals and Materials Characterization and Engineering, 213, 1, 55-6 http://dx.doi.org/1.4236/jmmce.213.1211 Published Online March 213 (http://www.scirp.org/journal/jmmce) Recovery of Iron
More informationGuide to Inclined Plate Settlers
Guide to Inclined Plate Settlers Murray, S., & Hanna, J-A. (2009). Guide to Inclined Plate Settlers. Invest Northern Ireland. Document Version: Early version, also known as pre-print Queen's University
More informationStruvia Technology for Phosphorus Recovery. o Re-Water Braunschweig November 2015
Struvia Technology for Phosphorus Recovery o Re-Water Braunschweig 2.-3. November 2015 1 Resourcing the World o Vision of circular economy o Sous-titre o Waste and Waste Water are resources Veolia Water
More informationGRIT HAPPENS: KNOW HOW TO DEAL WITH IT
GRIT HAPPENS: KNOW HOW TO DEAL WITH IT A CASE STUDY ON SELECTION OF GRIT REMOVAL SYSTEMS FOR WWTPs Murali Erat, P.E. November 18, 2014 Outline What is Grit? Characteristics of Grit Grit Removal Technologies
More informationSeasonal Source Water Quality and Treatment Challenges Town of Newburgh s Chadwick Lake Filtration Plant
Seasonal Source Water Quality and Treatment Challenges Town of Newburgh s Chadwick Lake Filtration Plant Clayton Johnson GHD Kevin Castro GHD James Osborne Town of Newburgh Image placeholder Outline Introduction
More informationIndustrial Process & Pilot Plant
Industrial Process & Pilot Plant Vienna, June 2008 3 Process Steps in 3 Sections Cooling Pelleting Mixing Sludge Ash Residues Thermal Treatment Energy Recycling Flue Gas Cleaning P-Half- Product Fertilizer
More informationDealing with Unexpected Wastewater Treatment Plant Disruptions. February 16, 2017
Dealing with Unexpected Wastewater Treatment Plant Disruptions February 16, 2017 Location Map WPCP History Original WPCP constructed on this site in 1928 consisting of primary treatment and chlorination;
More informationRemoving Heavy Metals from Wastewater
Removing Heavy Metals from Wastewater Engineering Research Center Report David M. Ayres Allen P. Davis Paul M. Gietka August 1994 1 Removing Heavy Metals From Wastewater Introduction This manual provides
More informationPublication No
Publication No. 02-168-232 FIELD DEMONSTRATION/EVALUATION OF A RAPID CLAY DEWATERING AND CONSOLIDATION PROCESS USING OTHER WASTES (FIPR/DIPR PROCESS) TO MINIMIZE CLAY SETTLING PONDS FINAL REPORT Prepared
More informationPumping solutions for the water. and wastewater industries. with peristaltic hose pumps
Verder Pumping solutions for the water and wastewater industries with peristaltic hose pumps Peristaltic hose pumps In water and wastewater Water and wastewater treatment facilities have common equipment
More informationCHLOR-ALKALI INDUSTRY
CHLOR-ALKALI INDUSTRY The chlor-alkali industry represents of three major industrial chemicals: Soda ash (sodium carbonate-na 2 CO 3 ) Caustic soda (sodium hydroxide-naoh) Chlorine (Cl 2 ) These chemicals
More informationIntroduction. Company
Introduction Company Founded in 2001 MSE Hiller are a leading name in the supply and rental of centrifuges for solid/liquid separation and sludge dewatering applications. We work with the leading names
More informationSTUDY OF FIVE PHOSPHORUS REMOVAL PROCESSES SELECT COMAG TO MEET CONCORD, MASSACHUSETTS STRINGENT NEW LIMITS. Hugh G. Tozer, P.E.
STUDY OF FIVE PHOSPHORUS REMOVAL PROCESSES SELECT COMAG TO MEET CONCORD, MASSACHUSETTS STRINGENT NEW LIMITS ABSTRACT Hugh G. Tozer, P.E., Woodard & Curran Woodard & Curran Inc. 41 Hutchins Drive Portland,
More informationTOTAL WATER MANAGEMENT IN THE STEEL INDUSTRY. By N. Ramachandran, Ion Exchange (India) Ltd
TOTAL WATER MANAGEMENT IN THE STEEL INDUSTRY By N. Ramachandran, Ion Exchange (India) Ltd Large quantities of water are required to produce steel and steel products - typically 180-200 m 3 of water per
More informationOptimization of circuits for pressure leaching of sulphide ores and concentrates
Optimization of circuits for pressure leaching of sulphide ores and concentrates by F. Saloojee* and F.K. Crundwell* http://dx.doi.org/10.17159/2411-9717/2016/v116n6a5 Pressure leaching is an option for
More informationZero Discharge for Textile Industry
Zero Discharge for Textile Industry C K Sandeep, General Manager Corporate Marketing, Ion Exchange (India) Ltd. Introduction The post liberalization period has led to the rapid growth of industrial output
More informationCENTRIFUGE DECANTER AND HOW IT WORKS
CENTRIFUGE DECANTER AND HOW IT WORKS DECANTER CENTRIFUGE In a decanter there s a continuous mechanical separation of suspended solids from a liquid or liquids You could see a centrifuge decanter like a
More information6.5 Filtration General
6.5 Filtration 6.5.1 General Turbidity and algae are removed from raw waters by screens, gravel filters and slow sand or rapid gravity filters. The difference between slow and rapid sand filtration is
More informationAgenda. Pretreatment Background Typical Contaminants Practical Examples Methods of Treatment and References
Pretreatment of Seawater for Desalination Plants Richard Dixon, ITT Agenda Pretreatment Background Typical Contaminants Practical Examples Methods of Treatment and References 2 Typical Constituents in
More informationSTACK SIZER TM. Patented Technology. The highest capacity, most efficient, fine wet screening machine in the world
STACK SIZER TM Patented Technology The highest capacity, most efficient, fine wet screening machine in the world Patented Derrick Stack Sizer The Derrick Stack Sizer has redefined the concept of efficient,
More informationYour Clear Choice for Filtration and Water &Wastewater Treatment equipment
Your Clear Choice for Filtration and Water &Wastewater Treatment equipment Anita Gupta, M.Sc., Business Manager Filtration Division Jason Blank, B.Eng. B.A., Technical Sales Specialist Filtration May 03,
More informationAir Lift Pumps (Grit Pump) ST-027
Air Lift Pumps (Grit Pump) ST-027 I. Grit removal facilities at Gilroy/Morgan Hill Plant. a. Aerated grit chambers and appurtenant equipment. 1. 2 grit tanks 2. Effective volume 47,713 Gal each. 3. Aeration
More informationEvaluation of Conventional Activated Sludge Compared to Membrane Bioreactors
Evaluation of Conventional Activated Sludge Compared to Membrane Bioreactors Short Course on Membrane Bioreactors 3/22/06 R. Shane Trussell, Ph.D., P.E. shane@trusselltech.com Outline Introduction Process
More informationPOLYCOM high-pressure grinding roll.
POLYCOM high-pressure grinding roll. POLYCOM high-pressure grinding roll the proven, energy-saving grinding system. Outstanding results are obtained with the high-pressure grinding roll for the comminution
More informationOptimizing the Ballasted Sedimentation Process at the Anacortes Water Treatment Plant Jeff Marrs Plant Manager Greg Pierson - HDR
Optimizing the Ballasted Sedimentation Process at the Anacortes Water Treatment Plant Jeff Marrs Plant Manager Greg Pierson - HDR 2014 HDR, Inc., all rights reserved. Presentation Overview Project drivers
More informationTampa Bay Water (TBW) is a regional
FWRJ Enhanced Residuals Treatment Helps Tampa Bay Water Regional Surface Water Treatment Plant Achieve Total Recycling Tony Pevec and Richard D. Moore Tampa Bay Water (TBW) is a regional water supply authority
More informationMuskeg River Mine Dedicated Disposal Area (DDA) Plan for In-pit Cell 1
Muskeg River Mine Dedicated Disposal Area (DDA) Plan for In-pit Cell 1 Updated: November 2010 Directive 74 Appendix C Requirement Approval: 8512D Submitted to SHELL CANADA ENERGY MRM DDA PLAN-UPDATE NOV
More informationTreatment Technologies
Treatment Technologies Precipitation Softening INTRODUCTION CHEMISTRY OF PRECIPITATION SOFTENING COLD LIME SOFTENING WARM LIME SOFTENING HOT PROCESS SOFTENING SILICA REDUCTION REDUCTION OF OTHER CONTAMINANTS
More informationExtracting uranium from its ores
Nuclear fuel cycle' Extracting uranium from its ores g by D.C. Seidel* The development of the uranium mining and ore processing industry is unique. In the space of a little less than 10 years it grew from
More informationCONSTRUCTION AND OPERATION OF A CHEMICAL EXTRACTION SOIL TREATMENT PLANT FOR THE REMEDIATION OF URANIUM CONTAMINATED SOIL AT A DOE FACILITY
CONSTRUCTION AND OPERATION OF A CHEMICAL EXTRACTION SOIL TREATMENT PLANT FOR THE REMEDIATION OF URANIUM CONTAMINATED SOIL AT A DOE FACILITY ABSTRACT Jeffrey P. Kulpa RMI Environmental Services Ashtabula,
More informationType 5860 Slurry Seal Designed Specifically for Slurry Pumps and Equipment
Heavy Duty Mechanical Seal for Slurry Processing Industries Type 5860 Slurry Seal Designed Specifically for Slurry Pumps and Equipment Type 5860 Slurry Seal Heavy Duty Mechanical Seals Technology The Type
More informationLivestock and poultry producers are seeking. Solid-Liquid Separation. of Animal Manure and Wastewater E
E-13 9-99 Settling basins are long, shallow structures using gravity to settle solids. Solid-Liquid Separation of Animal Manure and Wastewater Saqib Mukhtar, John M. Sweeten and Brent W. Auvermann* Livestock
More informationDredged Material Treatment and Disposal Facilities
Dredged Material Treatment and Disposal Facilities SedNet Special Session: Managing the Elbe Estuary 9 th October 2009 Dredged Material Management ELBE E L B E Avoidance Dredging Service Harbour Treatment
More informationPROVEN CHEMISTRIES WITH MEASURABLE RESULTS
PROVEN CHEMISTRIES WITH MEASURABLE RESULTS Mining and Mineral Processing Portfolio Safety and Environmental Excellence As part of our commitment to the Responsible Care* program, Solenis has set a global
More informationAmerican Filter Systems Inc. Phone : eptfe Membrane Filtration For The Chlor Alkali Industry
Phone : 918-271-1390 John@Americanfilter.com eptfe Membrane Filtration For The Chlor Alkali Industry Brine Purification eptfe Membrane BackPulse Filters BackPulse Filters. 1 2 3 4 5 6 7 8 No Clarifier
More informationSaint-Gobain Ceramic Materials
Saint-Gobain Ceramic Materials Saint Gobain SiC Membranes for Produced Water December 10th, 2014 Nathalie Elkhiati Fabiano Rodrigues Karen Dwyer Aberdeen Saint-Gobain Group Silicon Carbide Characteristics
More informationInstitute of Paper Science and Technology th Street, NW Atlanta, GA 30318
Institute of Paper Science and Technology 500 10 th Street, NW Atlanta, GA 30318 Kinetics of Ba(OH) 2 Reaction with Na 2 CO 3 and Na 2 SO 4 & Particle Separation Characteristics from White Liquor 6190
More informationChapter 2: Description of Treatment Facilities
2020 Facilities Plan Treatment Report 2.1 Introduction Chapter 2: Description of Treatment Facilities This chapter defines the Milwaukee Metropolitan Sewerage District (MMSD) service area. It also describes
More informationREMOVAL OF HARDNESS BY PRECIPITATION
REMOVAL OF HARDNESS BY PRECIPITATION Hardness divalent cations If hardness is too high Ca 2+ + Mg 2+ + Fe 2+ + Mn 2+ + Sr 2+... precipitation of soap, scaling on pipes, boilers, cooling towers, heat exchangers.
More information5.2.2 Lower Mgeni System
5.2.2 Lower Mgeni System Description The Lower Mgeni System (Figure 5.7 and Figure 5.8) serves the greater ethekwini Municipal area from lower Pinetown/KwaDabeka in the west, to Phoenix/Inanda/Verulam
More informationAqua Pristine Global Technologies, an ISO 9001:2008 & CE certified company is a leading supplier of world class Domestic RO, Industrial RO Plant,
Aqua Pristine Global Technologies, an ISO 9001:2008 & CE certified company is a leading supplier of world class Domestic RO, Industrial RO Plant, Domestic Water Softener, Industrial Water Softener, Sand
More informationTYPICAL INSTALLATION INSTRUCTIONS
TYPICAL INSTALLATION INSTRUCTIONS Environment One Grinder Pump Feature Identification 1. Grinder Pump Basin High density polyethylene (HDPE) 2. Accessway Cover Painted Steel 3. Electrical Quick Disconnect
More informationRawal Lake Water Treatment Plant Rawalpindi, Pakistan
Rawal Lake Water Treatment Plant Rawalpindi, Pakistan 1. Background Information Rawal Lake Water Treatment Plant is managed by the Water & Sanitation Agency (WASA) under the Rawalpindi Development Authority
More informationCEE 370 Environmental Engineering Principles
Updated: 19 November 2015 Print version CEE 370 Environmental Engineering Principles Lecture #29 Water Treatment III: Softening, Settling, Filtration Reading: M&Z Chapter 8 Reading: Davis & Cornwall, Chapt
More information