Single Process Arsenic and Antimony Removal Using Coagulation and Microfiltration

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Single Process Arsenic and Antimony Removal Using Coagulation and Microfiltration"

Transcription

1 Single Process Arsenic and Antimony Removal Using Coagulation and Microfiltration Presented by: Joe R. Tamburini, PE H.C. Liang, PhD Sam J. Billin, PE October 18, 2010 Tailings and Mine Waste 10

2 Outline Project Overview Arsenic Removal Technologies and Applications Coagulation-assisted microfiltration Arsenic and Antimony Chemistry Ferric Hydroxide Chemistry Bench Scale Test Results Full Scale Implementation Process flow description

3 Background on Project Location Nome, Alaska Water Source Gold mine dewatering wells Issues Elevated arsenic, antimony, and manganese Arsenic removal well understood, but antimony removal chemistry largely unknown Manganese issue developed after startup Hypothesis Coagulation-assisted microfiltration, ph adjustment

4 Arsenic Treatment Technologies Media Adsorption Granular iron oxide media Aluminum oxide media Ion Exchange Coagulation/Sedimentation/Filtration Coagulated-Assisted Microfiltration Reverse Osmosis

5 Arsenic Treatment Technologies

6 Coagulation and Microfiltration Iron Coagulants Ferric chloride Ferric sulfate, ferrous sulfate Ferric Salts Become Ferric Hydroxide FeCl 3 + H 2 O Fe(OH) + 2 (at ph < 7.3) Oxidized Arsenic Adsorbs to Ferric Hydroxide H 2 AsO 4- + Fe(OH) 2+ Precipitant Microfiltration Removes Precipitant

7 Coagulation and Microfiltration Schematic Representation of the Chemistry Arsenic (III) Oxidant As Fe(OH) 2 + As(III) OCl - As As - As(III) As(V) No Attraction Creates Negatively Charged As(V) Arsenic (V) As - As(V) Fe(OH) 2 + Chemically Bound to Ferric

8 Arsenic Treatment Technologies

9 Arsenic Treatment Technologies

10 Background on Project Water Quality Data Parameter Well 1 Well 2 Well 3 MCL Alkalinity, mg/l N/A ph, s.u N/A TDS, mg/l N/A Antimony, ug/l Arsenic, ug/l

11 Arsenic and Antimony Chemistry

12 Stability Diagram for As Speciation Stability diagrams also called Pourbaix Diagrams

13 Stability Diagram for As Speciation For optimal As removal, oxidize uncharged arsenic(iii) to charged arsenic(v) species

14 Stability Diagram for Sb Speciation

15 Stability Diagram for Sb Speciation Similarly to As, antimony must be in the Sb (V) oxidation state before it can be adsorbed by ferric hydroxide

16 Ferric Hydroxide Speciation 50% 7.3

17 Bench-Scale Study Parameters Solution ph Adjusted between 4.0, 5.0, 6.0 and natural ph Ferrous Sulfate Dose Adjusted between 10 and 160 mg/l Oxidant NaOCl Adjusted between 0 and 20 mg/l

18 Bench-Scale Results (Well 2) Antimony Conce entration (mg/l) FeSO4=80, NaOCl=20 FeSO4=120, NaOCl=20 FeSO4=120, NaOCl=10 FeSO4=120, NaOCl=0 FeSO4=160, NaOCl=20 MCL for Sb ph

19 Full-Scale WTP Optimization Optimum Operating Parameters Parameter Value Coagulant (Ferrous Chloride), mg/l 60 Oxidant (Sodium Hypochlorite), mg/l 10 ph, s.u. 6.0

20 Full-Scale WTP Results Effluent Sb Conc. (ug/l) MCL for Sb Ferric Chloride Dose (mg/l)

21 Full-Scale Implementation Raw Water Tank FeCl 3 Polymer Plate Settlers NaOH Treated Water Tank To Injection Wells Tailing Storage Facility Calcium Hypochlorite Reaction Tank NaOCl (if needed) Microfilter Membranes Waste Sump

22 Full-Scale WTP Results Effluent Mn Conc (ug/l) Manganese Removal MCL for Mn

23 Full-Scale Implementation

24 Full-Scale Implementation

25 Full-Scale Implementation

26 Project Conclusions Arsenic and antimony can be removed simultaneously using coagulation/microfiltration Effective arsenic removal was readily apparent Effective antimony removal improved with decreasing ph and increasing coagulant values A high coagulant dose was required for antimony removal Manganese removal dependant on effluent ph and ORP Manganese removal required adequate residence time

27 Questions??

28 Bench-Scale Results (Well 2) 100% 90% 80% FeSO4=80, NaOCl=20 FeSO4=120, NaOCl=20 FeSO4=120, NaOCl=10 FeSO4=120, NaOCl=0 FeSO4=160, NaOCl=20 Antimony Removal 70% 60% 50% 40% 30% 20% ph

29 Bench-Scale Study Procedure Filled 4 Beakers with Raw Water Added Oxidant Sodium Hypochlorite (bleach) Adjusted ph Used sulfuric acid Added Coagulant Varied dose on each test run Repeated procedure for several coagulant doses with each of three raw water sources

Removing Heavy Metals from Wastewater

Removing 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 2 Removing Heavy Metals From Wastewater Introduction This manual provides

More information

Coagulation-Flocculation-Jar Test. Assoc. Prof. Kozet YAPSAKLI

Coagulation-Flocculation-Jar Test. Assoc. Prof. Kozet YAPSAKLI Coagulation-Flocculation-Jar Test Assoc. Prof. Kozet YAPSAKLI Turbidity Turbidity particles (sand, silt, clay, bacteria, viruses) in the initial source water that need to be removed to improve treatment.

More information

Water Softening for Hardness Removal. Hardness in Water. Methods of Removing Hardness 5/1/15. WTRG18 Water Softening and Hardness

Water Softening for Hardness Removal. Hardness in Water. Methods of Removing Hardness 5/1/15. WTRG18 Water Softening and Hardness Water Softening for Removal 1 in Water High concentration of calcium (Ca2+) and magnesium (Mg2+) ions in water cause hardness Generally, water containing more than 100 mg/l of hardness expressed as calcium

More information

Description of Water-Treatment Options for Household Wells

Description of Water-Treatment Options for Household Wells Description of Water-Treatment Options for Household Wells Treating water at a single tap: Point-of-use (POU) systems 1. POU Adsorptive Media Arsenic is removed by passing water though a cartridge of adsorptive

More information

IMPACT OF CHEMICALS ADDITION IN WATER/WASTEWATER TREATMENT ON TDS CONCENTRATION AND SLUDGE GENERATION Jurek Patoczka, PhD, PE Hatch Mott MacDonald 27 Bleeker Str., Millburn, NJ 07041 (973) 912 2541 jurek.patoczka@hatchmott.com

More information

Granular Ferric Hydroxide for Elimination of Arsenic from Drinking Water

Granular Ferric Hydroxide for Elimination of Arsenic from Drinking Water Pal : Granular Ferric Hydroxide for Elimination of Arsenic from drinking Water 59 Granular Ferric Hydroxide for Elimination of Arsenic from Drinking Water B. N. Pal M/S Pal Trockner [P] Ltd. 25/1B Ibrahimpur

More information

Lime Softening LIME ADDITION. Hardness Lime Precipitate CO 2. + Ca(OH) 2 -> CaCO 3 + H 2 O. Ca(HCO 3 ) 2 + Ca(OH) 2 -> 2CaCO 3 + 2H 2 0

Lime Softening LIME ADDITION. Hardness Lime Precipitate CO 2. + Ca(OH) 2 -> CaCO 3 + H 2 O. Ca(HCO 3 ) 2 + Ca(OH) 2 -> 2CaCO 3 + 2H 2 0 Lime Softening Chemical precipitation is one of the more common methods used to soften water. Chemicals normally used are lime (calcium hydroxide, Ca(OH) 2 ) and soda ash (sodium carbonate, Na 2 CO 3 ).

More information

Chemistry at Work. How Chemistry is used in the Water Service

Chemistry at Work. How Chemistry is used in the Water Service Chemistry at Work How Chemistry is used in the Water Service WATER TREATMENT Everyday, more than 100 water treatment works in Northern Ireland put approximately 680 million litres of water into the supply

More information

Guidelines for Arsenic Removal Treatment for Small Public Drinking Water Systems

Guidelines for Arsenic Removal Treatment for Small Public Drinking Water Systems February 2010 Guidelines for Arsenic Removal Treatment for Small Public Drinking Water Systems Ted Strickland, Governor Lee Fisher, Lt. Governor Chris Korleski, Director Ohio Environmental Protection Agency

More information

Enhanced Organic Precursor Removals Using Aged Filter Media Page 1. Enhanced Organic Precursor Removals Using Aged Filter Media

Enhanced Organic Precursor Removals Using Aged Filter Media Page 1. Enhanced Organic Precursor Removals Using Aged Filter Media Enhanced Organic Precursor Removals Using Aged Media Page 1 Enhanced Organic Precursor Removals Using Aged Media O b j e c t i v e s The main goals of this project was to evaluate the dissolved organic

More information

DRINKING WATER - LAB EXPERIMENTS. Coagulation and flocculation LAB EXPERIMENTS. Jartest

DRINKING WATER - LAB EXPERIMENTS. Coagulation and flocculation LAB EXPERIMENTS. Jartest DRINKING WATER - LAB EXPERIMENTS LAB EXPERIMENTS Coagulation and flocculation Jartest coagulation and flocculation - jartest lab experiments Framework This module explains the lab experiment on coagulation

More information

Treatment of Arsenic Residuals from Drinking Water Removal Processes

Treatment of Arsenic Residuals from Drinking Water Removal Processes EPA/6/R/33 June 2 Treatment of Arsenic Residuals from Drinking Water Removal Processes by Michael J. MacPhee Gail E. Charles David A. Cornwell Environmental Engineering & Technology, Inc. Newport News,

More information

Cleaning guideline. 1. Reverse osmosis membrane elements contaminants.

Cleaning guideline. 1. Reverse osmosis membrane elements contaminants. Cleaning guideline This paragraph provides general information about common contaminants which affect the reverse osmosis composite polyamide membrane elements operational characteristics and methods of

More information

In-Situ Bioremediation Demonstration of Coal-Based Acid Mine Drainage. Tide Mine Site Indiana County, Pennsylvania

In-Situ Bioremediation Demonstration of Coal-Based Acid Mine Drainage. Tide Mine Site Indiana County, Pennsylvania In-Situ Bioremediation Demonstration of Coal-Based Acid Mine Drainage Tide Mine Site Indiana County, Pennsylvania Presented to: 26 th West Virginia Surface Mine Drainage Task Force Symposium Kelly S. Houston

More information

PURE WATER REQUIRES PURE SOLUTIONS. Water Treatment Chemicals

PURE WATER REQUIRES PURE SOLUTIONS. Water Treatment Chemicals PURE WATER REQUIRES PURE SOLUTIONS Water Treatment Chemicals Pure Water Requires Pure Solutions Even wastewater has to meet high quality requirements The Greenlandic language has at least ten words for

More information

WISCONSIN WASTEWATER OPERATORS ASSOCIATION

WISCONSIN WASTEWATER OPERATORS ASSOCIATION Integrity. People. Knowledge. WISCONSIN WASTEWATER OPERATORS ASSOCIATION ANNUAL CONFERENCE GREEN BAY Resources. MEETING LOW LEVEL PHOSPHORUS LIMITS BY CHEMICAL ADDITION WHAT IS PHOSPHORUS Atomic # 15 Electron

More information

TABLE OF CONTENTS CHAPTER TITLE PAGE DECLARATION. ii DEDICATION. iii ACKNOWLEDGEMENTS. iv ABSTRACT. v ABSTRAK. vi TABLE OF CONTENTS

TABLE OF CONTENTS CHAPTER TITLE PAGE DECLARATION. ii DEDICATION. iii ACKNOWLEDGEMENTS. iv ABSTRACT. v ABSTRAK. vi TABLE OF CONTENTS vii TABLE OF CONTENTS CHAPTER TITLE PAGE DECLARATION ii DEDICATION iii ACKNOWLEDGEMENTS iv ABSTRACT v ABSTRAK vi TABLE OF CONTENTS vii LIST OF TABLES x LIST OF FIGURES xi LIST OF SYMBOLS xiv LIST OF APPENDICES

More information

Comparative Studies for Selection of Technologies for Arsenic Removal from Drinking Water

Comparative Studies for Selection of Technologies for Arsenic Removal from Drinking Water 76 Technologies for Removal of Arsenic from Drinking Water Comparative Studies for Selection of Technologies for Arsenic Removal from Drinking Water J. C. Saha Development Design Consultants Limited DDC

More information

Hardness - Multivalent metal ions which will form precipitates with soaps. e.g. Ca 2+ + (soap) Ca(soap) 2 (s)

Hardness - Multivalent metal ions which will form precipitates with soaps. e.g. Ca 2+ + (soap) Ca(soap) 2 (s) Water Softening (Precipitation Softening) (3 rd DC 178; 4 th DC 235) 1. Introduction Hardness - Multivalent metal ions which will form precipitates with soaps. e.g. Ca 2+ + (soap) Ca(soap) 2 (s) Complexation

More information

Chemical Feed Systems Best Practices

Chemical Feed Systems Best Practices Chemical Feed Systems Best Practices NJAWWA Annual Conference Atlantic City, NJ March 18 th, 2015 John Perry Director of Public Works and Water and Sewer Utilities Montville Township, NJ What are Chemicals

More information

Dynamic Soil Systems Part A Soil ph and Soil Testing

Dynamic Soil Systems Part A Soil ph and Soil Testing Dynamic Soil Systems Part A Soil ph and Soil Testing Objectives: To measure soil ph and observe conditions which change ph To distinguish between active acidity (soil solution ph) and exchangeable acidity

More information

8 Chemicals from water treatment and distribution

8 Chemicals from water treatment and distribution 8 Chemicals from water treatment and distribution 8.1 Introduction Chemicals from water treatment and distribution reach drinking-water by the most direct route. They fall into three broad categories:

More information

Separation and Identification of Group B Cations (Bi 3+, Fe 3+, Mn 2+, Cr 3+ and Al 3+ )

Separation and Identification of Group B Cations (Bi 3+, Fe 3+, Mn 2+, Cr 3+ and Al 3+ ) Objectives Name: Separation and Identification of Group B Cations (Bi 3+, Fe 3+, Mn 2+, Cr 3+ and Al 3+ ) To understand the chemical reactions involved in the separation and identification of the Group

More information

HEXAVALENT CHROMIUM REMOVAL FROM INDUSTRIAL WATSEWATER BY CHEMICAL PRECIPITATION METHOD

HEXAVALENT CHROMIUM REMOVAL FROM INDUSTRIAL WATSEWATER BY CHEMICAL PRECIPITATION METHOD HEXAVALENT CHROMIUM REMOVAL FROM INDUSTRIAL WATSEWATER BY CHEMICAL PRECIPITATION METHOD Dr. C.R.Ramakrishnaiah P.G-Environmental Engineering Dept of Civil Engineering, B.M.S. College of Engineering Bull

More information

Wastewater Reuse. Typical treated wastewater is:

Wastewater Reuse. Typical treated wastewater is: Wastewater Reuse Most metal finishing industries have in-house wastewater treatment to economically dispose of the acids, alkali, oils, and dissolved metals in the rinse water and occasional tank solution

More information

Ion Exchange Softening

Ion Exchange Softening Ion Exchange Softening Ion-exchange is used extensively in small water systems and individual homes. Ion-exchange resin, (zeolite) exchanges one ion from the water being treated for another ion that is

More information

Metal Ion + EDTA Metal EDTA Complex

Metal Ion + EDTA Metal EDTA Complex Simplified Removal of Chelated Metals Sultan I. Amer, AQUACHEM INC. Metal Finishing, April 2004, Vol. 102 No. 4 Chelating agents are used in large quantities in industrial applications involving dissolved

More information

ABSTRACT INTRODUCTION. Presented at 12 th IWA ASPAC Regional Conference and Exhibition, Water Beyond 2000, 5 9 November 2000, Chiangmai, THAILAND

ABSTRACT INTRODUCTION. Presented at 12 th IWA ASPAC Regional Conference and Exhibition, Water Beyond 2000, 5 9 November 2000, Chiangmai, THAILAND Presented at 12 th IWA ASPAC Regional Conference and Exhibition, Water Beyond 2000, 5 9 November 2000, Chiangmai, THAILAND Ratana Kanluen and Sultan I. Amer AQUACHEM INC. Canton, Michigan, U.S.A. ABSTRACT

More information

Removal of arsenic from drinking water and soil bioremediation

Removal of arsenic from drinking water and soil bioremediation International Congress Mexico City, 20-24 June 2006 Natural Arsenic in Groundwaters of Latin America Removal of arsenic from drinking water and soil bioremediation M.L. Castro de Esparza Pan American Center

More information

Technical Service Bulletin July 2009 TSB102.06

Technical Service Bulletin July 2009 TSB102.06 Technical Service Bulletin July 2009 TSB102.06 RO Membrane Foulants and Their Removal from Polyvinyl Derivative (PVD) RO Membrane Elements This bulletin provides general information about the usual foulants

More information

OXIDATION-REDUCTION TITRATIONS-Permanganometry

OXIDATION-REDUCTION TITRATIONS-Permanganometry Experiment No. Date OXIDATION-REDUCTION TITRATIONS-Permanganometry INTRODUCTION Potassium permanganate, KMnO 4, is probably the most widely used of all volumetric oxidizing agents. It is a powerful oxidant

More information

TREATMENT OF PHOSPHATE FERTILIZER PLANT WASTE WATER IN FLORIDA FOR DISCHARGE AND RE USE PURPOSES

TREATMENT OF PHOSPHATE FERTILIZER PLANT WASTE WATER IN FLORIDA FOR DISCHARGE AND RE USE PURPOSES TREATMENT OF PHOSPHATE FERTILIZER PLANT WASTE WATER IN FLORIDA FOR DISCHARGE AND RE USE PURPOSES JOHN F. BOSSLER, SIEMENS Water Technologies Corp., Hoffman Estates, IL RONALD TRAVIS, SIEMENS Water Technologies

More information

Technologies and Costs for Removal of Arsenic from Drinking Water

Technologies and Costs for Removal of Arsenic from Drinking Water United States Environmental Protection Agency Office of Water (4606) EPA 815-R-00-028 December 2000 www.epa.gov/safewater Technologies and Costs for Removal of Arsenic from Drinking Water . TECHNOLOGIES

More information

Chemical Handling : Bulk Liquid Chemical Unloading. Northern Michigan Wastewater Operators Seminar September 23, 2008

Chemical Handling : Bulk Liquid Chemical Unloading. Northern Michigan Wastewater Operators Seminar September 23, 2008 Chemical Handling : Bulk Liquid Chemical Unloading Northern Michigan Wastewater Operators Seminar September 23, 2008 Different Chemicals = Different Hazards Right to Know Why Care? Chemical Burn (~15,000/yr)

More information

Determining the Mole Ratios in a Chemical Reaction

Determining the Mole Ratios in a Chemical Reaction Determining the Mole Ratios in a Chemical Reaction Computer 9 A balanced chemical reaction equation gives the mole ratios of the reactants and the products as coefficients. When some of the chemical formulas

More information

Learning Guide 3A Salts Chem 1010. If you could look at them more closely, here's what you would see.

Learning Guide 3A Salts Chem 1010. If you could look at them more closely, here's what you would see. Introduction Learning Guide 3A Salts Chem 1010 Look at the samples in the two bottles you were given. What observations can you make about them? A: B: If you could look at them more closely, here's what

More information

DEIONIZATION IN A "NUT SHELL"

DEIONIZATION IN A NUT SHELL Deionized Water (DI) DEIONIZATION IN A "NUT SHELL" City water is passed through dark amber colored, caviar sized plastic beads called cation ion exchange resin. The cation resin is in the hydrogen form

More information

Coagulation and Flocculation

Coagulation and Flocculation Coagulation and Flocculation Groundwater and surface water contain both dissolved and suspended particles. Coagulation and flocculation are used to separate the suspended solids portion from the water.

More information

Treatment Technologies for Arsenic Removal

Treatment Technologies for Arsenic Removal Treatment Technologies for Arsenic Removal On January 18, 2001, the United States Environmental Protection Aagency (EPA) finalized the maximum contaminant level (MCL) for arsenic at 0.01 mg/l. The EPA subsequently

More information

Arsenic Removal with Bayoxide E33 Ferric Oxide Media & SORB 33 As Adsorption

Arsenic Removal with Bayoxide E33 Ferric Oxide Media & SORB 33 As Adsorption Arsenic Removal with Bayoxide E33 Ferric Oxide Media & SORB 33 As Adsorption Frank Stanish Severn Trent Services, Inc. AWWA New York Conference Saratoga Springs, NY April 15, 2015 Agenda Background on

More information

Information Technology Solutions

Information Technology Solutions Information Technology Solutions ABSTRACT The discharge of selenium to natural water systems is regulated by law. Those with permitted outfalls must treat the waste stream to below the US EPA regulatory

More information

Attenuation of metals in tailings Lars Lövgren, Tomas Hedlund and Torbjörn Karlsson Department of Chemistry, Umeå University

Attenuation of metals in tailings Lars Lövgren, Tomas Hedlund and Torbjörn Karlsson Department of Chemistry, Umeå University Attenuation of metals in tailings Lars Lövgren, Tomas Hedlund and Torbjörn Karlsson Department of Chemistry, Umeå University Background Oxidation of sulphide minerals releases metals and acidity Weathering

More information

The Chemistry Name Game

The Chemistry Name Game The Chemistry Name Game Contributed by Butane: The Carroll College Chemistry Club Main Science Idea for Kids As students play the Chemistry Name Game, they will learn why compounds form as they do. They

More information

Experiment 9 - Double Displacement Reactions

Experiment 9 - Double Displacement Reactions Experiment 9 - Double Displacement Reactions A double displacement reaction involves two ionic compounds that are dissolved in water. In a double displacement reaction, it appears as though the ions are

More information

The Control of ph and Oxidation Reduction Potential (ORP) in Cooling Tower Applications By Charles T. Johnson, Walchem Corporation

The Control of ph and Oxidation Reduction Potential (ORP) in Cooling Tower Applications By Charles T. Johnson, Walchem Corporation The Control of ph and Oxidation Reduction Potential (ORP) in Cooling Tower Applications By Charles T. Johnson, Walchem Corporation Introduction The importance of keeping cooling tower water in proper chemical

More information

Pall Aria Systems for Water Treatment Applications Guide

Pall Aria Systems for Water Treatment Applications Guide Pall Aria Systems for Water Treatment Applications Guide With stringent water treatment regulations and a growing demand for safer water, treatment systems must ensure strict compliance with purity standards.

More information

AgriLife Extension Solutions

AgriLife Extension Solutions Understanding Water Quality Reports for Your Pond Todd Sink, Ph.D. Extension Fisheries Specialist Texas A&M AgriLife Extension Service Mikayla House Texas A&M AgriLife Extension Service Water quality tests

More information

POTW PHOSPHORUS REMOVAL PROCESSES

POTW PHOSPHORUS REMOVAL PROCESSES POTW PHOSPHORUS REMOVAL PROCESSES Ohio Lake Erie Phosphorus Task Force - December 20, 2007 ROBERT M. BONNETT, PE Northeast Ohio Regional Sewer District OUTLINE SOURCES AND FORMS IN WASTEWATER TYPICAL POTW

More information

BOD / CBOD FROM A TO Z. Amy Starkey Stark County Sanitary Engineers

BOD / CBOD FROM A TO Z. Amy Starkey Stark County Sanitary Engineers BOD / CBOD FROM A TO Z Amy Starkey Stark County Sanitary Engineers What is BOD???? What is BOD? It is a measure of the amount of oxygen consumed by bacteria during the decomposition of organic materials.

More information

Microfiltration for Removal of Manganese from Surface Water

Microfiltration for Removal of Manganese from Surface Water Microfiltration for Removal of Manganese from Surface Water Carl Schneider, Ph.D., P.E., Senior Process Engineer Wiedeman & Singleton, Inc., Atlanta, GA Peter Johns, P.E., Vice-President Wiedeman & Singleton,

More information

1.85 WATER AND WASTEWATER TREATMENT ENGINEERING HOMEWORK 5

1.85 WATER AND WASTEWATER TREATMENT ENGINEERING HOMEWORK 5 1.85 WATER AND WASTEWATER TREATMENT ENGINEERING HOMEWORK 5 Question 1 (4 points) The water defined by the analysis given below is to be softened by excess-lime (and soda ash) treatment. a. Sketch an meq/l

More information

Feasibility study of crystallization process for water softening in a pellet reactor

Feasibility study of crystallization process for water softening in a pellet reactor International A. H. Mahvi, Journal et al. of Environmental Science & Technology Feasibility study of crystallization... Vol. 1, No. 4, pp. 1-4, Winter 5 Feasibility study of crystallization process for

More information

Elements, Compounds, subscript, superscript, coefficient Periodic Table o Periods, groups, etc. o Metals o Non-metals o Metalloids

Elements, Compounds, subscript, superscript, coefficient Periodic Table o Periods, groups, etc. o Metals o Non-metals o Metalloids Chemistry Elements, Compounds, subscript, superscript, coefficient Periodic Table o Periods, groups, etc. o Metals o Non-metals o Metalloids The patterns are related to the chemical properties of the element.

More information

Experiment 16-Acids, Bases and ph

Experiment 16-Acids, Bases and ph Definitions acid-an ionic compound that releases or reacts with water to form hydrogen ion (H + ) in aqueous solution. They taste sour and turn litmus red. Acids react with certain metals such as zinc,

More information

SURFACE WATER TREATMENT

SURFACE WATER TREATMENT SURFACE WATER TREATMENT The type of treatment needed for surface water supplies depends on the contaminants present. These contaminants are grouped into five general categories: minerals, turbidity, bacteria,

More information

The Fundamentals of Chlorine Chemistry and Disinfection

The Fundamentals of Chlorine Chemistry and Disinfection The Fundamentals of Chlorine Chemistry and Disinfection December 2007 George Bowman, The Wisconsin State Lab of Hygiene and Rick Mealy, The Wisconsin Dept. of Natural Resources How do you respond to a

More information

13.0 EXPERIMENT ON DETERMINATION OF BIOCHEMICAL OXYGEN DEMAND

13.0 EXPERIMENT ON DETERMINATION OF BIOCHEMICAL OXYGEN DEMAND 13.0 EXPERIMENT ON DETERMINATION OF BIOCHEMICAL OXYGEN DEMAND Sl. No. Contents Preamble 13.1 Aim 13.2 Introduction 13.2.1 Environmental Significance 13.3 Principle 13.4 Materials Required 13.4.1 Apparatus

More information

Arsenic Removal Technologies for Drinking Water in Vietnam

Arsenic Removal Technologies for Drinking Water in Vietnam Arsenic Removal Technologies for Drinking Water in Vietnam Pham Hung Viet 1*, Tran Hong Con 1, Cao The Ha 1, Nguyen Van Tin 2, Michael Berg 3, Walter Giger 3 and Roland Schertenleib 3 Abstract Severe and

More information

Subject: Technical Letter 22 April 1977 Removal of Water Supply Contaminants -- Copper and Zinc

Subject: Technical Letter 22 April 1977 Removal of Water Supply Contaminants -- Copper and Zinc STATE OF ILLINOIS Department of Registration and Education JOAN G. ANDERSON DIRECTOR. SPRINGFIELD BOARD OF NATURAL RESOURCES AND CONSERVATION JOAN G. ANDERSON CHAIRMAN BIOLOGY THOMAS PARK CHEMISTRY H.

More information

Removal of Sulfate from Waste Water by Activated Carbon. Mohammed Sadeq Salman Computer Centre/ University of Baghdad

Removal of Sulfate from Waste Water by Activated Carbon. Mohammed Sadeq Salman Computer Centre/ University of Baghdad Al-Khwarizmi Engineering Journal, Vol. 5, No. 3, PP 72-76 (29) Al-Khwarizmi Engineering Journal Removal of Sulfate from Waste Water by Activated Carbon Mohammed Sadeq Salman Computer Centre/ University

More information

Removal of Turbidity, Organic Matter, Coliform and Heterotrophic Bacteria by Coagulants Poly Aluminium Chloride from Karoon River Water in Iran

Removal of Turbidity, Organic Matter, Coliform and Heterotrophic Bacteria by Coagulants Poly Aluminium Chloride from Karoon River Water in Iran Asian Journal of Chemistry; Vol. 24, No. 6 (12), 2389-2393 Removal of Turbidity, Organic Matter, Coliform and Heterotrophic Bacteria by Coagulants Poly Aluminium Chloride from Karoon River Water in Iran

More information

The Relationship between ph and Deionized Water

The Relationship between ph and Deionized Water The Relationship between ph and Deionized Water The basics of ph The topic of ph and water has been well documented over the years; however, there is still much confusion about its significance in high

More information

Appendix B: Water Treatment Scenarios from AMD Treat

Appendix B: Water Treatment Scenarios from AMD Treat Appendix B: Water Treatment Scenarios from AMD Treat 103 of 104 Jeddo Tunnel Abandoned Mine Drainage Passive vs. Active Treatment Cost Estimates Provided by Office of Surface Mining AMD Treat Software

More information

Mine Water Management & Treatment Mining & Metals

Mine Water Management & Treatment Mining & Metals Mine Water Management & Treatment Mining & Metals Water is a critical resource for mining projects. Its management and protection are of paramount importance to every mine. Amec Foster Wheeler offers industry-leading

More information

GRP PIPES AND FITTINGS CURAÇAO SEAWATER DESALINATION PLANT DEGREMONT

GRP PIPES AND FITTINGS CURAÇAO SEAWATER DESALINATION PLANT DEGREMONT The most complete solutions in GRP PIPES AND FITTINGS CURAÇAO DEGREMONT (Netherland Antilles) 2008 / D-2 C A S E S T O R Y SWDP desalination PROTESA MANUFACTURES, SUPPLIES AND INSTALLS THE PROCESS PIPING

More information

1. Read P. 368-375, P. 382-387 & P. 429-436; P. 375 # 1-11 & P. 389 # 1,7,9,12,15; P. 436 #1, 7, 8, 11

1. Read P. 368-375, P. 382-387 & P. 429-436; P. 375 # 1-11 & P. 389 # 1,7,9,12,15; P. 436 #1, 7, 8, 11 SCH3U- R.H.KING ACADEMY SOLUTION & ACID/BASE WORKSHEET Name: The importance of water - MAKING CONNECTION READING 1. Read P. 368-375, P. 382-387 & P. 429-436; P. 375 # 1-11 & P. 389 # 1,7,9,12,15; P. 436

More information

2.0 PHOSPHORUS FORMS IN RAW WASTEWATER AND IN THE EFFLUENT 4.0 CHEMICALS USED FOR PHOSPHORUS PRECIPITATION. 4.2.1 Overview of Aluminum Based Chemicals

2.0 PHOSPHORUS FORMS IN RAW WASTEWATER AND IN THE EFFLUENT 4.0 CHEMICALS USED FOR PHOSPHORUS PRECIPITATION. 4.2.1 Overview of Aluminum Based Chemicals Chapter Chemical Precipitation of Phosphorus 1.0 INTRODUCTION.0 PHOSPHORUS FORMS IN RAW WASTEWATER AND IN THE EFFLUENT.0 PRINCIPLES OF CHEMICAL PHOSPHORUS REMOVAL.1 Mechanism of Phosphorus Removal. Fate

More information

Basic Chemistry of Chlorination

Basic Chemistry of Chlorination Basic Chemistry of Chlorination Chlorine (Cl 2 ) is a gas, heavier than air, toxic, non-flammable and an economically available oxidizing agent that provides properties desirable in disinfection usage.

More information

Molarity of Ions in Solution

Molarity of Ions in Solution APPENDIX A Molarity of Ions in Solution ften it is necessary to calculate not only the concentration (in molarity) of a compound in aqueous solution but also the concentration of each ion in aqueous solution.

More information

Indiana s Newest Filtration Facility; East Chicago

Indiana s Newest Filtration Facility; East Chicago Indiana s Newest Filtration Facility; East Chicago Innovation and Value-Added Benefits Behind East Chicago s Membrane Treatment Facility Eric Horvath, PE and Kara M. Boyles, PhD, PE August 1, 2012 Presentation

More information

Name: Class: Date: 2 4 (aq)

Name: Class: Date: 2 4 (aq) Name: Class: Date: Unit 4 Practice Test Multiple Choice Identify the choice that best completes the statement or answers the question. 1) The balanced molecular equation for complete neutralization of

More information

Neutralization of Acid Mine Drainage Using Stabilized Flue Gas Desulfurization Material

Neutralization of Acid Mine Drainage Using Stabilized Flue Gas Desulfurization Material Neutralization of Acid Mine Drainage Using Stabilized Flue Gas Desulfurization Material W. Wolfe 1, C.-M. Cheng 1, R. Baker 1, T. Butalia 1, J. Massey-Norton 2 1 The Ohio State University, 2 American Electric

More information

Prepared by: Htec Systems, Inc. 561 Congress Park Drive Dayton, Ohio 45459 937 438-3010

Prepared by: Htec Systems, Inc. 561 Congress Park Drive Dayton, Ohio 45459 937 438-3010 CARBONATE CHEMISTRY AFFECTING PRODUCTION OF BEVERAGE STILL WATER Prepared by: Htec Systems, Inc. 561 Congress Park Drive Dayton, Ohio 45459 937 438-3010 December 2005 TABLE OF CONTENTS 1.0 SUMMARY... 1

More information

QUESTION (2012:3) (a) (i) Complete the table below showing the conjugate acids and bases. CO 3 H 2 O OH HCN CN -

QUESTION (2012:3) (a) (i) Complete the table below showing the conjugate acids and bases. CO 3 H 2 O OH HCN CN - QUESTION (2012:3) (i) Complete the table below showing the conjugate acids and bases. Conjugate acid Conjugate base - HCO 3 2 CO 3 H 2 O OH HCN CN - (ii) HPO 4 2 (aq) Write equations for the reactions

More information

Waste Water Treatment for Fossil Fuelled Power Plant: Current Practice and Future Trends.

Waste Water Treatment for Fossil Fuelled Power Plant: Current Practice and Future Trends. Waste Water Treatment for Fossil Fuelled Power Plant: Current Practice and Future Trends. Richard Harries, Associate Consultant E.ON New Build & Technology Contents 1. Historical Overview. 2. Sources of

More information

Marina Bay on Boston Harbor Water-treatment system by OilTrap Environmental

Marina Bay on Boston Harbor Water-treatment system by OilTrap Environmental Marina Bay on Boston Harbor Water-treatment system by OilTrap Environmental Introduction to Electrocoagulation Electro------Coagulation Electro To cause a pre-determined reaction using a DC electrical

More information

Tutorial 4 SOLUTION STOICHIOMETRY. Solution stoichiometry calculations involve chemical reactions taking place in solution.

Tutorial 4 SOLUTION STOICHIOMETRY. Solution stoichiometry calculations involve chemical reactions taking place in solution. T-27 Tutorial 4 SOLUTION STOICHIOMETRY Solution stoichiometry calculations involve chemical reactions taking place in solution. Of the various methods of expressing solution concentration the most convenient

More information

Life Cycle Assessment of Three Water Scenarios: Importation, Reclamation, and Desalination

Life Cycle Assessment of Three Water Scenarios: Importation, Reclamation, and Desalination Life Cycle Assessment of Three Water Scenarios: Importation, Reclamation, and Desalination Erin Lyons, Peng Zhang, Troy Benn, Miles Costanza, Ke Li, John Crittenden Department of Civil and Environmental

More information

Chapter 2 Atoms Molecules and Ions

Chapter 2 Atoms Molecules and Ions Chapter 2 Atoms Molecules and Ions Student: NOTE: A periodic table is required to work many of the problems in this chapter. 1. The elements in a column of the periodic table are known as A. metalloids.

More information

Water remediation: Passive Treatment Technologies

Water remediation: Passive Treatment Technologies Presenter: Jacques Meyer Project design: Adrian Haagner, Piet Smit & Jacques Meyer Water remediation: Passive Treatment Technologies Using a sub-surface flow wetland on a rehabilitated decommissioned coal

More information

(b) Maintenance of a disinfectant residual throughout the distribution system;

(b) Maintenance of a disinfectant residual throughout the distribution system; 64445.2. Sampling of Treated Water Sources. (a) Each water supplier utilizing treatment to comply with any MCL for an organic chemical listed in Table 64444-A shall collect monthly samples of the treated

More information

REDUCTION-OXIDATION TITRATIONS

REDUCTION-OXIDATION TITRATIONS REDUCTIONOXIDATION TITRATIONS A reductionoxidation reaction (Redox reaction) involves the transfer of an electron(s) from species in the reaction to another. Redox reactions allow titrations of analytes

More information

Chem 171 Review - Exam 1

Chem 171 Review - Exam 1 Chem 171 Review - Exam 1 The following is a list of concepts and terms with which you should be well-acquainted. This is not a substitute for your notes. This list of review topics is not meant to be exhaustive,

More information

NCERT. To determine the concentration/molarity of KMnO 4

NCERT. To determine the concentration/molarity of KMnO 4 UNIT-6 TITRIMETRIC ANALYSIS (REDX REACTINS) THE oxidation and reduction reactions in aqueous solutions involve the transfer of electrons from one species to another. In the oxidation of a substance electron(s)

More information

MOLARITY = (moles solute) / (vol.solution in liter units)

MOLARITY = (moles solute) / (vol.solution in liter units) CHEM 101/105 Stoichiometry, as applied to Aqueous Solutions containing Ionic Solutes Lect-05 MOLES - a quantity of substance. Quantities of substances can be expressed as masses, as numbers, or as moles.

More information

Development of Low-cost Technologies for Removal of Arsenic from Groundwater

Development of Low-cost Technologies for Removal of Arsenic from Groundwater Ali et al. : Development of Low-cost Technologies for Arsenic Removal from Groundwater 99 Development of Low-cost Technologies for Removal of Arsenic from Groundwater M. Ashraf Ali, A.B.M. Badruzzaman,

More information

Swimming Pool and Spa Water Chemical Adjustments

Swimming Pool and Spa Water Chemical Adjustments Swimming Pool and Spa Water Chemical Adjustments John A. Wojtowicz Chemcon This paper deals with adjustments to swimming pool and spa water chemical parameters such as ph, alkalinity, hardness, stabilizer,

More information

Comparison of natural radioactivity removal methods for drinking water supplies: A review

Comparison of natural radioactivity removal methods for drinking water supplies: A review Comparison of natural radioactivity removal methods for drinking water supplies: A review E. Esmeray, M. E. Aydin Selcuk University Environmental Engineering Department, Konya Turkey e-mail: eesmeray@selcuk.edu.tr

More information

Understanding ph management and plant nutrition Part 3: Fertilizers

Understanding ph management and plant nutrition Part 3: Fertilizers Understanding ph management and plant nutrition Part 3: Fertilizers Bill Argo, Ph.D. Blackmore Company, Tel: 800-874-8660, Int l 734-483-8661, E-mail: bargo@blackmoreco.com Originally printed in 2003 in

More information

CWD BALDWIN PLANT NEW RESIDUALS HANDLING SYSTEM

CWD BALDWIN PLANT NEW RESIDUALS HANDLING SYSTEM CWD BALDWIN PLANT NEW RESIDUALS HANDLING SYSTEM OTCO Water Workshop March, 2011 Frank Woyma Plant Manager Nick Pizzi Vice-President EE&T ENVIRONMENTAL ENGINEERING & TECHNOLOGY, INC. Objectives Review the

More information

Experiment 8 - Double Displacement Reactions

Experiment 8 - Double Displacement Reactions Experiment 8 - Double Displacement Reactions A double displacement reaction involves two ionic compounds that are dissolved in water. In a double displacement reaction, it appears as though the ions are

More information

HOMEWORK 4A. Definitions. Oxidation-Reduction Reactions. Questions

HOMEWORK 4A. Definitions. Oxidation-Reduction Reactions. Questions HOMEWORK 4A Oxidation-Reduction Reactions 1. Indicate whether a reaction will occur or not in each of following. Wtiring a balcnced equation is not necessary. (a) Magnesium metal is added to hydrochloric

More information

Dissolved Mineral Radioactivity in Drinking Water

Dissolved Mineral Radioactivity in Drinking Water WD-WSEB-3-11 2004 Dissolved Mineral Radioactivity in Drinking Water General New Hampshire's bedrock contains naturally occurring radioactivity. A few examples with health importance include radon, radium

More information

CHEMISTRY MEMORIZATION: STEPS FOR SOLVING STOICHIOMETRY PROBLEMS: MEMORIZE THESE use these till they are in your dreams!!!

CHEMISTRY MEMORIZATION: STEPS FOR SOLVING STOICHIOMETRY PROBLEMS: MEMORIZE THESE use these till they are in your dreams!!! CHEMISTRY MEMORIZATION: STEPS FOR SOLVING STOICHIOMETRY PROBLEMS: MEMORIZE THESE use these till they are in your dreams!!! 1. Complete reaction, determine the compounds, check oxidation numbers of each

More information

Summer Assignment Coversheet

Summer Assignment Coversheet Summer Assignment Coversheet Course: A.P. Chemistry Teachers Names: Mary Engels Assignment Title: Summer Assignment A Review Assignment Summary/Purpose: To review the Rules for Solubility, Oxidation Numbers,

More information

Qualitative Analysis Identification of Some Important Anions and Cations

Qualitative Analysis Identification of Some Important Anions and Cations Qualitative Analysis Identification of Some Important Anions and Cations Qualitative analysis is the testing of a sample of matter to determine its composition. Qualitative analysis, applied by scientists

More information

Moles, Molecules, and Grams Worksheet Answer Key

Moles, Molecules, and Grams Worksheet Answer Key Moles, Molecules, and Grams Worksheet Answer Key 1) How many are there in 24 grams of FeF 3? 1.28 x 10 23 2) How many are there in 450 grams of Na 2 SO 4? 1.91 x 10 24 3) How many grams are there in 2.3

More information

RFP 5725 ANNUAL CONTRACT FOR WATER TREATMENT CHEMICALS FOR THE CITY OF DENTON. Exhibit 3. Scope of Work / Specifications

RFP 5725 ANNUAL CONTRACT FOR WATER TREATMENT CHEMICALS FOR THE CITY OF DENTON. Exhibit 3. Scope of Work / Specifications Materials Management Department 901-B Texas Street Denton, Texas 76209 940-349-7100 purchasing@cityofdenton.com RFP 5725 ANNUAL CONTRACT FOR WATER TREATMENT CHEMICALS FOR THE CITY OF DENTON Exhibit 3 Scope

More information

Balancing Chemical Equations

Balancing Chemical Equations Balancing Chemical Equations 1. sodium carbonate + calcium hydroxide sodium hydroxide + calcium carbonate Na 2 CO 3 + Ca(OH) 2 2 NaOH + CaCO 3 2. carbon dioxide + water carbonic acid CO 2 + H 2 O H 2 CO

More information

Environmental Technology March/April 1998

Environmental Technology March/April 1998 Treating Metal Finishing Wastewater Sultan I. Amer, Ph.D. AQUACHEM INC. Environmental Technology March/April 1998 Wastewater from metal finishing industries contains high concentrations of contaminants

More information