ANODIZING ACID PURIFICATION using RESIN SORPTION TECHNOLOGY at PIONEER METAL FINISHING

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "ANODIZING ACID PURIFICATION using RESIN SORPTION TECHNOLOGY at PIONEER METAL FINISHING"

Transcription

1 ANODIZING ACID PURIFICATION using RESIN SORPTION TECHNOLOGY at PIONEER METAL FINISHING Paul Pajunen, P. Eng., Group Leader Metal Finishing, Eco-Tec Inc., Pickering, Ontario Jim Harrison, Environmental Engineer, Pioneer Metal Finishing, Green Bay, Wisconsin AESF Compliance Week '97, Orlando, Florida, January, 1997 Introduction The Pioneer Metal Finishing Company (PMF) is the nations largest job shop anodizer having three facilities throughout the country in Minnesota, Wisconsin, and, most recently, a new facility in Michigan. The Green Bay, Wisconsin facility started out in 1974 and currently employs over 275 people. Customers include the papermaking, automotive, aerospace/aviation, defense, computer, electronics, and housewares industries. Anodizing is the process by which an oxide film is formed on an aluminum part to give a hard, corrosion resistant and abrasion resistant coating with excellent wear properties. PMF predominately undertakes Type II conventional anodizing and Type III hardcoat anodizing. Currently, nine anodizing tanks are utilized of which six are dedicated to hardcoat anodizing. On a daily basis, close to 100,000 individual pieces of machined items are processed through these anodizing baths. They range from pizza pans to carpenter levels to automatic braking systems. A major contributor that leads to quality problems in an anodizing bath is the buildup of dissolved aluminum contamination. Implementing bath purification alleviates this buildup and promotes the generation of a consistent, predictable oxide coating. The anodizing acid purification system chosen by PMF utilizes a well established method known as resin sorption made possible via the technique of reciprocating flow ion exchange. This paper will review the design considerations of this method as well as outline the resulting benefits of improved quality control, reduced chemical purchases, and reduced sulfate discharge. Typical Workpiece at PMF

2 Anodizing Purification Benefits A large quantity of free sulfuric acid remains when the anodizing solution is discarded once the aluminum concentration reaches unacceptable levels. Being able to recycle this free sulfuric acid provides a couple of key benefits to PMF: i) Bath Control Benefit Operating an anodizing bath in a dump/decant manner presents a number of potential problems. These are due to the fact that there exists a delicate balance within an anodizing bath - namely, the relationships between the electrical resistance (caused by the formed oxide coating and the anodizing solution conductivity), the voltage being applied, and the desired constant current condition. The electrical resistance increases relative to the thickness of the oxide coating and to the increasing aluminum concentration in the anodizing solution. To compensate for this increased resistance, the rectifier voltage must be increased in order for the current to remain constant. Adding in other variables such as bath temperature, degree of solution agitation, and sulfuric acid concentration can result in upsets and lead to a decline in product quality. Maintaining a consistent, low aluminum concentration removes or minimizes a variable that can affect this balance between resistance, voltage, and current. With so many different workpieces going through the anodizing baths, in conjunction with the tight tolerances that must be maintained among these various products, ensuring a predictable anodizing operation is crucial. The following problems can be alleviated by ensuring bath consistency: Variable process times - a fresh and spent bath scenario means adjustments in the length of time a work piece remains in the bath for processing and contributes to productivity variation. Periodic line shutdown - this is required in order to dump the bath and make up with fresh solution; productivity can then become an issue. Material rework/quality problems - poor bath conditions can lead to rework and surface finish problems such as burning or pitting; a more uniform oxide coating leads to better results when, for example, downstream coloring processes are employed. Labor costs for bath maintenance - operator safety is also an issue here. ii) Reduced Waste Benefit The level of acidic waste discharge prior to bath purification exceeded the level of alkaline waste discharge from this facility. The waste treatment practice at that time was to blend these two wastes together for discharge and then undertake further neutralization with virgin caustic soda to produce a predominately sodium sulfate waste. Recycling the sulfuric acid in order to minimize sulfate discharge is attractive for the following reasons: Excess sulfates going to the local POTW is not ecologically desirable due to the damage that can arise to concrete sewer lines. Sulfates can attack the concrete causing swelling and loss of strength and hastening metal corrosion. Sodium sulfate aggressively attacks concrete pipe at acidic, neutral, and even alkaline ph s. Chemical costs are able to be reduced which includes the sulfuric acid for anodizing and the caustic soda for neutralization. Being able to realize the above benefits resulted in PMF undertaking an evaluation of anodizing acid purification.

3 Acid Purification Historically, a process called acid sorption was introduced in It employs ion exchange resins which sorb strong acids from solution but exclude metallic salts of those acids. The process is reversible in that the acid can be readily desorbed from the resin with water. It is thus possible, by alternately passing contaminated acid and water through the bed, to achieve a chromatographic separation of the free acid from the metal salt. Water Sulfuric acid Aluminum sulfate Sorption Resin Bead The process, despite its appeal, was not successfully commercialized for some time. This was probably due to the limitations of conventional ion exchange technology which tends to cause excessive dilution of the purified acid upon water elution and the large column size which results from the small bed volume throughputs inherent in the process. In 1975, a novel ion exchange technique called reciprocating flow ion exchange was applied to the acid sorption process. This method of ion exchange is characterized by fine particle size resins, countercurrent elution, short column heights, fixed, over-packed resin beds, short cycles, and a number of other features. The process is ideal for treating small volumes of concentrated solutions with a minimum of dilution or fluid intermixing in the resin column. Reciprocating flow ion exchange has seen wide application in the metal finishing industry for the recovery of a wide variety of metals. By employing this method, the performance of the acid sorption process was significantly improved. The first successful commercial application of the acid sorption process using reciprocating flow ion exchange technology was reported in Since that time, over 400 of these systems have been installed around the world in a variety of applications employing sulfuric, hydrochloric, and nitric acids. Unit Operation The acid sorption process is assembled into a skid mounted unit called an Acid Purification Unit (TM). The heart of this unit is obviously the resin bed, which is typically 24 inches (61 cm) in height. Scaleup is accomplished by increasing the diameter of the bed.

4 resin column Aluminum sulfate solution Water resin column Sulfuric acid/ aluminum sulfate Sulfuric acid Acid sorption step Water wash step The basic operation of the unit is illustrated above. There are two main steps in the cycle: sorption and wash. During the sorption step, anodizing acid is pumped upward through the resin column. Free sulfuric acid is sorbed by the resin while aluminum sulfate salt solution passes through. During the desorption step, water passes down through the resin column to extract the free sulfuric acid from the resin. The equipment alternates automatically from sorption to desorption every few minutes. The net result is a virtually continuous process for acid purification and metal salt removal. Purification Alternatives While resin sorption is the most widely used method of anodizing acid purification, other membrane based unit operations such as diffusion dialysis and electrodialysis may be technically applicable. Of the two, diffusion dialysis is the more commercially established, particularly in Japan. General statements pertaining to the evaluation of resin sorption versus diffusion dialysis technologies are as follows: In a single pass, resin sorption systems provide a lower metal removal but a higher acid recovery compared with diffusion dialysis systems. The net result is that resin sorption systems remove dissolved aluminum from an anodizing process with less free acid loss. Running costs for both systems are low consisting only of water usage and energy for transporting the acid and water through the equipment. Membrane replacement costs were reported to be an expensive consumable contributing to a large percentage of the overall system cost. Resin sorption reports replacement by regular plant personnel once every 6-12 years comprising 10-15% of the system cost. The performance criteria for an acid purification system must be based on the ability of the system to remove metal down to desired concentration levels, to effect proper metal removal capacity, and, most importantly, to minimize acid losses. System Operation/Performance Two units are currently in operation at this PMF facility. The first was commissioned in February, 1985 and currently has completed close to 550,000 cycles. A plant expansion resulted in a installation of a second unit which was commissioned in December, 1992 and currently has completed over 120,000 cycles. Both units have the capability to effect an aluminum removal rate of 3 lb/hour (1.36 kg/hour) while holding

5 the aluminum concentration at 7 g/l in the anodizing solution. The mass balance around a unit is shown below. Stream Sulfuric Acid (g/l) Aluminum (g/l) Flow (L/hr) Feed Product Byproduct Water Acid Purification Unit Operating Conditions The operating conditions reflect the following performance standards: 96% of all free sulfuric acid fed to the acid purification unit is recovered for reuse. For every pound of aluminum removed by the unit, 2.5 pounds of sulfuric acid was lost to waste. This translates into a 70% reduction in sulfuric acid purchases and caustic soda neutralization costs when compared to holding the sulfuric acid and aluminum concentrations at the above feed levels under a dump/decant scenario. In terms of system interface, a feed pump transfers anodizing solution from one of the anodizing baths to an acid reservoir located on the skid of the unit. This reservoir is then pressurized with air to force the bath solution through the resin column. Once a predetermined volume of bath solution has been processed, a second water reservoir is pressurized forcing water in the opposite direction to displace the free sulfuric acid back to the anodizing bath. The unit cycles continuously and automatically in this manner. Normal daily analysis of the individual bath solution will dictate when and if the unit is to be shut off.

6 ANODIZING TANK ANODIZING TANK ANODIZING TANK ANODIZING TANK PRODUCT FEED PUMP FEED AIR ELECTRICITY WATER F F ACID PURIFICATION UNIT BYPRODUCT Process Schematic One unique feature is an automatic valve switchover sequence. Since a number of baths exist here and the unit only operates on one bath at a time, the unit can be programmed to cycle through the various baths to effect aluminum removal. Complete flexibility is afforded here - the unit can operate longer or shorter on each of the baths as programmed by the operator depending on the workload through the baths at any given time. Since startup, the units have operated with little more than routine maintenance involving cartridge filter replacement and normal service of valves. A resin bed volume was replaced once on the older unit, not to the degradative effects of the sulfuric acid as one might expect, but because the resin was lost due to an accidental breakage of the screen/gasket assembly holding the resin in place. No resin changeout has occurred with the newer unit.

7 Acid Purification Unit Contamination has consistently been kept at the desired 7 g/l metal concentration level. Problems such as pitting and burning have been avoided as a result of the consistency that arises with bath performance. No bath solution has been dumped since the units have been installed. Summary Savings in sulfuric acid purchases and neutralization costs have been realized. Of greater importance has been the consistent, predictable anodizing operation at all times even in the face of different requirements and tolerances from the wide variety of work pieces being processed. Also, the reduction of sulfate discharge from the facility has proved beneficial to the local POTW in terms of minimizing damage to concrete sewer lines. It is interesting to note that the new plant in Michigan has subsequently gone ahead with such a unit as a result of the positive results from this installation. Also, the sister plant in Minneapolis has had such a system for the last 11 years.

8 References 1. Pernick, J. Problems in Hardcoat Anodizing, Plating and Surface Finishing Magazine, p. 32, (June, 1988). 2. Albertson, O., ph Control - Neutralizing Alkaline Industrial Wastewater - Beneficial or Detrimental?, Industrial Wastewater Journal, p (March/April, 1996) 3. Dejak, M., Acid Purification and Recovery using Resin Sorption Technology - An Update, presented at the AESF/EPA Pollution Prevention Conference, Orlando, Florida (1994) 4. Brace, A.W., Anodic Coating Defects - Their Causes and Cure, Technicopy Ltd., Gloucestershire, England (1992) 5. C. Brown, C. Fletcher, "The Recoflo Ion Exchange Process", Ion Exchange for Industry, M. Streat, Ed., Chichester, UK: Ellis Horwood Limited (1988) 6. C. Fletcher, V. Pace, "New Performance Standards for Demineralization set by Recoflo Technology", presented at the American Power Conference, Chicago, Illinois (1995) About the Authors Jim Harrison has been with the Pioneer Metal Finishing Company, Green Bay, Wisconsin Division, for 3 years. He is the Quality Assurance Supervisor at this facility where he coordinates all environmental compliance activities. Mr. Harrison holds a degree in Biology and Chemistry from St. Norbert College in DePere, Wisconsin. Paul Pajunen has, for the last 12 years, been with Eco-Tec of Pickering, Ontario, Canada, in various roles as process engineer, customer service engineer, and sales/marketing representative. He currently leads Eco-Tec's marketing efforts as it pertains to the electroplating and aluminum metal finishing sectors. Mr. Pajunen holds a degree in chemical engineering from the University of Waterloo, is a registered professional engineer in the Province of Ontario, is a member of the American Electroplaters and Surface Finishers Society, Inc. (AESF), is a member of the Aluminum Anodizers Council (AAC), and is involved with the Metal Finishers Suppliers Association (MFSA), Canadian division, government relations committee.

RECOFLO ION EXCHANGE TECHNOLOGY

RECOFLO ION EXCHANGE TECHNOLOGY RECOFLO ION EXCHANGE TECHNOLOGY Michael Sheedy Prosep Technologies Inc. a subsidiary of Eco-Tec Ltd, 1145 Squires Beach Road, Pickering, Ontario, Canada, L1W 3T9. Abstract Recoflo ion exchange technology

More information

RECOVERY and PURIFICATION of NICKEL SALTS and CHROMIC ACID using the RECOFLO SYSTEM

RECOVERY and PURIFICATION of NICKEL SALTS and CHROMIC ACID using the RECOFLO SYSTEM RECOVERY and PURIFICATION of NICKEL SALTS and CHROMIC ACID using the RECOFLO SYSTEM RONALD P. GOUTHRO, Technical Marketing Specialist, Eco-Tec Inc., Ontario, Canada LLOYD VAZ, Technical Consultant, Thermax

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

Technical Support Services Accelerated Learning Through the Visual Presentation of Technical Information

Technical Support Services Accelerated Learning Through the Visual Presentation of Technical Information TSS Module 11 Waste Neutralization pdf documents Text in pdf documents may appear fuzzy or blocky due to file compression. To change the appearence in Acrobat TM Reader TM 3.X, go to the menu item: File

More information

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

ECOAZUR BLUEWATER WATER PURIFICATION PLANTS

ECOAZUR BLUEWATER WATER PURIFICATION PLANTS ECOAZUR BLUEWATER WATER PURIFICATION PLANTS CONTACT EcoAzur Calle 11a #492 x 60 y 62 Tel: +52-999-920-1972 Col. Residencial Pensiones Email: info@eco-azur.com C.P. 97217 Merida, Yucatan, Mexico Website:

More information

Acid Purification Chemistry The Kleingarn Curve. Prepared by: C.T. Philipp, P.E.

Acid Purification Chemistry The Kleingarn Curve. Prepared by: C.T. Philipp, P.E. Acid Purification Chemistry The Kleingarn Curve Prepared by: C.T. Philipp, P.E. Presented To: AGA Tech Forum Pittsburgh, PA USA 10/10/2007 1 Acid Purification Chemistry The Kleingarn Curve The pickling

More information

Zero Discharge Pickling Sulfuric or Hydrochloric Bryan M. Cullivan, president Beta Control Systems, Inc. 1.0 Introduction

Zero Discharge Pickling Sulfuric or Hydrochloric Bryan M. Cullivan, president Beta Control Systems, Inc. 1.0 Introduction Zero Discharge Pickling Sulfuric or Hydrochloric Bryan M. Cullivan, president Beta Control Systems, Inc. 1.0 Introduction Voltaire stated, "No problem can withstand the assault of sustained thinking."

More information

softeners and reverse osmosis

softeners and reverse osmosis Guidance Leaflet Reducing water use softeners and reverse osmosis Most water supplies contain dissolved solids (e.g. salts and other minerals, particularly calcium and magnesium). The type and level of

More information

Ion Exchange for Industrial Applications

Ion Exchange for Industrial Applications Ion Exchange for Industrial Applications Ion Exchange Technologies Softening Ion exchange equipment the ion exchange process is an exchange of one ion for another, using a synthetic resin to perform the

More information

RECOVERY OF STAINLESS STEEL PICKLE LIQUORS: PURIFICATION VS. REGENERATION

RECOVERY OF STAINLESS STEEL PICKLE LIQUORS: PURIFICATION VS. REGENERATION RECOVERY OF STAINLESS STEEL PICKLE LIQUORS: PURIFICATION VS. REGENERATION CISA International Steel Congress, September,2002 Beijing China Craig J. Brown, P. Eng., Eco-Tec Inc., Pickering, Ontario, Canada

More information

Electrodeionization (EDI)

Electrodeionization (EDI) Electrodeionization (EDI) Fact Sheet Cal Water Industrial Water Purification (800) CAL-WATER EDI is a continuous electro-chemical process of water purification where ion specific membranes, mixed bed resin,

More information

ELECTROCHEMICAL PROCESSING OF REGENERATION SOLUTIONS FROM ION- EXCHANGE TREATMENT OF WATER WITH PRODUCTION OF ACIDS AND ALKALIS

ELECTROCHEMICAL PROCESSING OF REGENERATION SOLUTIONS FROM ION- EXCHANGE TREATMENT OF WATER WITH PRODUCTION OF ACIDS AND ALKALIS ELECTROCHEMICAL PROCESSING OF REGENERATION SOLUTIONS FROM ION- EXCHANGE TREATMENT OF WATER WITH PRODUCTION OF ACIDS AND ALKALIS T. Shabliy, E. Goltvianytskaya, N. Gomelya Department of Ecology and Plant

More information

MIXED ACID RECOVERY with the APU ACID SORPTION SYSTEM CRAIG BROWN, Prosep Technologies, Eco-Tec Inc., Pickering, Ontario

MIXED ACID RECOVERY with the APU ACID SORPTION SYSTEM CRAIG BROWN, Prosep Technologies, Eco-Tec Inc., Pickering, Ontario MIXED ACID RECOVERY with the APU ACID SORPTION SYSTEM CRAIG BROWN, Prosep Technologies, Eco-Tec Inc., Pickering, Ontario An Update SUMMARY Since the first APU acid sorption system was installed in 1982

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

AESF Aerospace / Airline Plating Forum - Tulsa, OK.

AESF Aerospace / Airline Plating Forum - Tulsa, OK. AESF Aerospace / Airline Plating Forum - Tulsa, OK. The following is condensed from a White Paper presented by C.T. (Tom) Philipp, P.E., at the Aerospace/Airline Plating Forum in Tulsa, OK. This paper

More information

_ENNTEC. TREATMENT SOlUTioNS. Industrial Water Supply

_ENNTEC. TREATMENT SOlUTioNS. Industrial Water Supply _ENNTEC WATER TREATMENT SOlUTioNS Industrial Water Supply Water is widely used in industry, whether it is encountered as raw water, process water or waste water. Very often make-up water must be treated

More information

Probably the greatest threat to softening resin is iron fouling. Cation resin will exchange ferrous iron Fe +2

Probably the greatest threat to softening resin is iron fouling. Cation resin will exchange ferrous iron Fe +2 Maintaining Ion Exchange Resin Based Systems by Michael C. Keller Sybron Chemicals Inc. Ion exchange resins use a process based upon ion selectivity. In this method, ions of greater preference will displace

More information

Metal Finishing: How to Save on Alkaline Cleaners, Acids, and Rinse Water May 10, 2011 Dave Fister, Senior Staff Engineer

Metal Finishing: How to Save on Alkaline Cleaners, Acids, and Rinse Water May 10, 2011 Dave Fister, Senior Staff Engineer Metal Finishing: How to Save on Alkaline Cleaners, Acids, and Rinse Water May 10, 2011 Dave Fister, Senior Staff Engineer New York State Pollution Prevention Institute at Rochester Institute of Technology

More information

ph is a measure of the hydrogen ion, (H+), concentration in a liquid and classifies liquids as either acidic or caustic.

ph is a measure of the hydrogen ion, (H+), concentration in a liquid and classifies liquids as either acidic or caustic. The Importance of ph- Corrosion/Environmental Impact ph is a measure of the hydrogen ion, (H+), concentration in a liquid and classifies liquids as either acidic or caustic. Liquid discharges that are

More information

ABC CIRCUITS 10 Circuit Drive Circuit Town, IN 12345 SLUG CONTROL PLAN

ABC CIRCUITS 10 Circuit Drive Circuit Town, IN 12345 SLUG CONTROL PLAN ABC CIRCUITS 10 Circuit Drive Circuit Town, IN 12345 SLUG CONTROL PLAN The purpose of this plan is to provide detailed instructions for slug prevention and control. A complete copy of this plan is maintained

More information

Nickel Free Room Temperature Seal: an innovative and ecological process

Nickel Free Room Temperature Seal: an innovative and ecological process Nickel Free Room Temperature Seal: an innovative and ecological process 2015 ANODIZING CONFERENCE San Diego, California Prepared by: Marcello Rossi Italtecno Srl Italy NICKEL FREE ROOM TEMPERATURE SEAL:

More information

DOWEX UPCORE Mono Ion Exchange Resins LED Manufacturer Combines UPCORE Packed Bed and FILMTEC RO Systems for Reliable Ultrapure Water Production

DOWEX UPCORE Mono Ion Exchange Resins LED Manufacturer Combines UPCORE Packed Bed and FILMTEC RO Systems for Reliable Ultrapure Water Production Case History DOWEX UPCORE Mono Ion Exchange Resins LED Manufacturer Combines UPCORE Packed Bed and FILMTEC RO Systems for Reliable Ultrapure Water Production Site Information Location: Taiwan Purpose:

More information

Trivalent Chromium Plating Conversion Case Study Independent Plating, Worcester, Massachusetts

Trivalent Chromium Plating Conversion Case Study Independent Plating, Worcester, Massachusetts Trivalent Chromium Plating Conversion Case Study Independent Plating, Worcester, Massachusetts Faced with new regulations restricting emissions of hexavalent chromium (hex-chrome) from various plating

More information

CHLOR-ALKALI COATINGS AND REFURBISHMENT SERVICES. By Dr Derek C Armstrong

CHLOR-ALKALI COATINGS AND REFURBISHMENT SERVICES. By Dr Derek C Armstrong CHLOR-ALKALI COATINGS AND REFURBISHMENT SERVICES By Dr Derek C Armstrong 1 KEY FACTS INEOS manufactures all its own coatings All INEOS coatings can be tailored to customers membrane cycles Anodes Cathodes

More information

Productivity improvements through recovery of pickle liquors with the APU process

Productivity improvements through recovery of pickle liquors with the APU process Continuous recovery of pickle liquors saves acid and reduces waste treatment expense as well as providing a means of decreasing pickling times and ellmlnating downtimes for bath replacement and tank clean

More information

Seam with welding oxides and ferritic contamination from grinding

Seam with welding oxides and ferritic contamination from grinding Pickling The State Of The Art 2007 This article, written by John Swain of Anopol, examines the processes and equipment available for pickling stainless steels, together with the pros and cons arising when

More information

Pure Water. Isn t Hard to Find

Pure Water. Isn t Hard to Find COOL TALK Pure Water BY WILLIAM SLUHAN Isn t Hard to Find Hard water badly degrades coolant performance. To maximize the efficiency and longevity of coolant, pure water is essential - and not as hard to

More information

Well Water Iron Removal Using Quantum DMI-65 Granular Filter Media

Well Water Iron Removal Using Quantum DMI-65 Granular Filter Media Well Water Iron Removal Using Quantum DMI-65 Granular Filter Media ASME Research Committee Power Plant and Environmental Chemistry Overland Park, Kansas April 2-4, 2007 Prepared by: W. H. Stroman Primary

More information

New technological root for regenerating demineralized water plants for safe environment

New technological root for regenerating demineralized water plants for safe environment International Journal of Water Resources and Environmental Engineering Vol. 3(2), pp. 52-56, February 2011 Available online at http://www.academicjournals.org/ijwree ISSN 2141-6613 2011 Academic Journals

More information

Technical Data Sheet

Technical Data Sheet Technical Data Sheet LANTHANE BLUE 126 A High Performance, BLUE Passivate for Zinc G. Schiavon C. De Val E 16.09.10 MPK Translation Creation Approval Alpha. Index Date Observations 1 / 8 Table of Contents

More information

Article 510 CORROSION PROTECTION Adopted by the CGA Board of Directors on October 14, 2006

Article 510 CORROSION PROTECTION Adopted by the CGA Board of Directors on October 14, 2006 California Groundwater Association An NGWA Affiliate State PO Box 14369 * Santa Rosa * CA 95402 707-578-4408; FAX: 707-546-4906; email: wellguy@groundh2o.org Article 510 CORROSION PROTECTION Adopted by

More information

EPB 223- Introduction to Iron and Manganese Removal

EPB 223- Introduction to Iron and Manganese Removal Note: As of October 1, 2012 The Water Security Agency and Saskatchewan Ministry of Environment share responsibility and authority for the administration of The Environmental Management and Protection Act,

More information

Electroplating. Industry Description and Practices. Pollution Prevention and Control. Waste Characteristics

Electroplating. Industry Description and Practices. Pollution Prevention and Control. Waste Characteristics Pollution Prevention and Abatement Handbook WORLD BANK GROUP Effective July 1998 Electroplating Industry Description and Practices Electroplating involves the deposition of a thin protective layer (usually

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

KODAK Developer System Cleaner and Neutralizer

KODAK Developer System Cleaner and Neutralizer KODAK Developer System Cleaner and Neutralizer TECHNICAL DATA / CHEMICAL March 2010 TI-2000 GENERAL INFORMATION KODAK Developer System Cleaner and Neutralizer is designed to remove the buildup of silver

More information

CHLORIDE REMOVAL FROM KRAFT LIQUORS USING ION EXCHANGE TECHNOLOGY

CHLORIDE REMOVAL FROM KRAFT LIQUORS USING ION EXCHANGE TECHNOLOGY CHLORIDE REMOVAL FROM KRAFT LIQUORS USING ION EXCHANGE TECHNOLOGY Craig J. Brown, Aleksander Russer Prosep Technologies Inc. 1145 Squires Beach Road Pickering, Ontario L1V 3T9 Michael Paleologou, Roxaré

More information

Successful Pollution Prevention Strategies in a Zinc Die-Casting Plant

Successful Pollution Prevention Strategies in a Zinc Die-Casting Plant Successful Pollution Prevention Strategies in a Zinc Die-Casting Plant An article from the Journal of Environmental Regulation, about successful pollution prevention strategies in a Zinc Die-Casting Plant.

More information

Not All Softeners are Created Equal

Not All Softeners are Created Equal By Robert Hader Service Manager Michael Urbans Technical Manager . Summary: While water softening using synthetic cation ion exchange resin has been around for at least 50 years, not all softeners are

More information

Zirconium in Sulfuric Acid Pickling Applications

Zirconium in Sulfuric Acid Pickling Applications Zirconium in Sulfuric Acid Pickling Applications INTRODUCTION For more than 30 years, zirconium has been successfully used in hot sulfuric acid tanks for pickling steel. Zirconium is uniquely suited for

More information

Recovery of Waste Engine Coolants Using Advanced Vacuum Distillation Technology

Recovery of Waste Engine Coolants Using Advanced Vacuum Distillation Technology Recovery of Waste Engine Coolants Using Advanced Vacuum Distillation Technology Millions of gallons of waste engine coolants are generated each year during routine preventative and other maintenance procedures.

More information

Process Guidelines for Cupric Chloride Etching. Chemcut

Process Guidelines for Cupric Chloride Etching. Chemcut Introduction TECHNICAL INFORMATION Process Guidelines for Cupric Chloride Etching BULLETIN 8 Cupric chloride as the main etchant for panels using non-metallic resists began to become common in the late

More information

Silica Over-Saturation, Precipitation, Prevention and Remediation In Hot Water Systems Edited By Dave Peairs, Cal Water, Technical Director

Silica Over-Saturation, Precipitation, Prevention and Remediation In Hot Water Systems Edited By Dave Peairs, Cal Water, Technical Director Silica Over-Saturation, Precipitation, Prevention and Remediation In Hot Water Systems Edited By Dave Peairs, Cal Water, Technical Director Background Silica scaling becomes a problem when any hot water

More information

XPure. Simulated Moving Bed. www.xendo.com. System for Chromatography and Ion exchange applications. Better solutions for your purification needs

XPure. Simulated Moving Bed. www.xendo.com. System for Chromatography and Ion exchange applications. Better solutions for your purification needs XPure Simulated Moving Bed System for Chromatography and Ion exchange applications Better solutions for your purification needs www.xendo.com ... is an independent engineering and consulting company, was

More information

GUIDELINES FOR LEACHATE CONTROL

GUIDELINES FOR LEACHATE CONTROL GUIDELINES FOR LEACHATE CONTROL The term leachate refers to liquids that migrate from the waste carrying dissolved or suspended contaminants. Leachate results from precipitation entering the landfill and

More information

NO TARN 15. 5) Can be used on Silver AND Gold. Protects gold from blackening during shipping due to reaction with box chemicals.

NO TARN 15. 5) Can be used on Silver AND Gold. Protects gold from blackening during shipping due to reaction with box chemicals. Description is an after-treatment process which effectively protects Silver from oxidation and tarnishing. Used as directed, it forms a thin, invisible film on the surface which blocks exposure to the

More information

SELEMION SELEMION ION EXCHANGE MEMBRANES

SELEMION SELEMION ION EXCHANGE MEMBRANES SELEMION SELEMION ION EXCHANGE MEMBRANES Safety Warning Before using the products, please be sure to read and observe the cautions printed in the user's manual. Sole Agent Membrane Division WBG Marive

More information

Troubleshooting Your RO

Troubleshooting Your RO Troubleshooting Your RO Summary: There can be many reasons why a RO system suffers a loss in performance, and is unable to produce the proper quantity and/or quality of permeate water. Similar to a doctor

More information

BHS CANDLE FILTER APPLICATIONS FOR CLARIFICATION / RECOVERY OF SOLIDS FROM CHEMICAL SLURRIES

BHS CANDLE FILTER APPLICATIONS FOR CLARIFICATION / RECOVERY OF SOLIDS FROM CHEMICAL SLURRIES FOR CLARIFICATION / RECOVERY OF SOLIDS FROM CHEMICAL SLURRIES TABLE OF CONTENTS 1. FINE CATALYST RECOVERY AT A REFINERY Pages 2 4 2. FINE SOLIDS REMOVAL & CLARIFICATION OF A SPECIALIZED ACIDIC SOLVENT

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

Innovative Designs of the UF& SWRO Limassol Desalination Plant in Cyprus

Innovative Designs of the UF& SWRO Limassol Desalination Plant in Cyprus Innovative Designs of the UF& SWRO Limassol Desalination Plant in Cyprus N. Nadav, Mekorot Water Co., The Projects' Design and Commissioning Engineer, Lincoln str. 9 Tel-Aviv Israel, nnadav@mekorot.co.il

More information

Water Efficiency. Water Management Options. Boilers. for Commercial, Industrial and Institutional Facilities. Boiler Water Impurities

Water Efficiency. Water Management Options. Boilers. for Commercial, Industrial and Institutional Facilities. Boiler Water Impurities Water Efficiency Water Management Options Boilers for Commercial, Industrial and Institutional Facilities Boiler Water Impurities All boiler make-up water contains impurities. As clean steam is released

More information

Waste and Cost Reduction Techniques for Small Parts Cleaners

Waste and Cost Reduction Techniques for Small Parts Cleaners Waste and Cost Reduction Techniques for Small Parts Cleaners Edited by Ron Still Mechanical components typically need cleaning during repair and maintenance activities, and most maintenance shops use parts

More information

CORROSION CONTROL OF ELECTROLYZER, ANOLYTE TANK AND DECHLORINATION TOWER TANK OF A CHLOR-ALKALI PLANT BY AN INNOVATIVE METHOD

CORROSION CONTROL OF ELECTROLYZER, ANOLYTE TANK AND DECHLORINATION TOWER TANK OF A CHLOR-ALKALI PLANT BY AN INNOVATIVE METHOD CORROSION CONTROL OF ELECTROLYZER, ANOLYTE TANK AND DECHLORINATION TOWER TANK OF A CHLOR-ALKALI PLANT BY AN INNOVATIVE METHOD Sazal Kumar Kundu* Global Heavy Chemicals Limited (GHCL), Dhaka, Bangladesh

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

Electrodialysis Treatment of Surface and Waste Waters

Electrodialysis Treatment of Surface and Waste Waters Technical Paper Electrodialysis Treatment of Surface and Waste Waters Authors: Robert P. Allison, Senior Process Engineer Introduction Electrodialysis (ED) is a membrane desalination process that was initially

More information

Nine Industrial Scale V SEPs. Feed Tank V SEP. Feed Pumps (Three) Concentrate. Tank. V SEP Treatment System

Nine Industrial Scale V SEPs. Feed Tank V SEP. Feed Pumps (Three) Concentrate. Tank. V SEP Treatment System River Treatment for Ultrapure Production A cost-effective and environmentally-sound solution Abstract New Logic International installed its Vibratory Shear Enhanced Processing (VSEP) Phase I system in

More information

Contract No: Disclaimer:

Contract No: Disclaimer: Contract No: This document was prepared in conjunction with work accomplished under Contract No. DE-AC09-09SR22505 with the U.S. Department of Energy (DOE) National Nuclear Security Administration (NA).

More information

DIY HARDCOAT ANODIZING CHEMICALS KIT

DIY HARDCOAT ANODIZING CHEMICALS KIT DIY HARDCOAT ANODIZING CHEMICALS KIT We provide different anodizing kits for hobbyists of their small scale anodizing line. All our dyes and chemicals in the kits are environmentally friendly products.

More information

Anodizing Reference Guide

Anodizing Reference Guide Anodizing Reference Guide Type Thickness Type II Conventional coatings produced 1.8µ-25.4µ from sulfuric acid bath Type I A Conventional coatings produced 0.5µ-7.6µ (microns) from chromic acid bath Type

More information

Technical Support Services Accelerated Learning Through the Visual Presentation of Technical Information

Technical Support Services Accelerated Learning Through the Visual Presentation of Technical Information TSS Module 8 pdf documents Text in pdf documents may appear fuzzy or blocky due to file compression. To change the appearence in Acrobat TM Reader TM 3.X, go to the menu item: File / Preferences / General

More information

Hardness ions also interfere with many chemical processes such as chemical compounding and aqueous cleaners.

Hardness ions also interfere with many chemical processes such as chemical compounding and aqueous cleaners. Water Softeners Industrial Water Purification (800) CAL-WATER By Dave Peairs, Cal Water, Technical Director Rev: 06/08/2004 Before any discussion of water softeners, we must first define what hard water

More information

Mid-Monroe Water System: Soluble Iron and Manganese Removal via Oxidation & Filtration

Mid-Monroe Water System: Soluble Iron and Manganese Removal via Oxidation & Filtration Mid-Monroe Water System: Soluble Iron and Manganese Removal via Oxidation & Filtration Daniel Rickard, P.E. Engineering Project Manager Pennsylvania-American Water Company Who Is American Water We are

More information

Calorplast Heat Exchangers

Calorplast Heat Exchangers Presented courtesy of Aetna Plastics (www.aetnaplastics.com) GF Piping Systems Calorplast Heat Exchangers Steel Processing Chemical Processing Semiconductor Pharmaceutical Automotive Aerospace Plating

More information

QUALITY TECHNOLOGY SERVICE. ORW..Series. Plated Heat Exchangers

QUALITY TECHNOLOGY SERVICE. ORW..Series. Plated Heat Exchangers QUALITY ORW..Series TECHNOLOGY SERVICE In the result of R&D studies about cost and efficiency, many heat exchangers have been developed as an alternative to conventional piped type head exchangers. Plated

More information

Anodizing by Constant Current Density

Anodizing by Constant Current Density Anodizing by Constant Current Density By Charles A. Grubbs Technical Advisor Today, the modern anodizer is faced with challenges never before considered. The quest for Quality and reproducibility has become

More information

Corrosivity of Water Supplies

Corrosivity of Water Supplies WD-DWGB-3-4 2009 Corrosivity of Water Supplies What is meant by Corrosivity? Corrosive water can be defined as a condition of water quality which will dissolve metals from metallic plumbing at an excessive

More information

RO / NF Cleaning Guidelines

RO / NF Cleaning Guidelines Nanostone Water, Inc. Carlsbad Office 2463 Impala Dr. Carlsbad, CA 92010 USA T: +1 (844) 765-7377 www.nanostone.com RO / NF Cleaning Guidelines 2015 Nanostone Water, Inc. www.nanostone.com RO/NF Cleaning

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

www.klmtechgroup.com TABLE OF CONTENT

www.klmtechgroup.com TABLE OF CONTENT Page : 1 of 38 Project Engineering Standard www.klmtechgroup.com KLM Technology #03-12 Block Aronia, Jalan Sri Perkasa 2 Taman Tampoi Utama 81200 Johor Bahru Malaysia CAUSTIC AND CHEMICAL TABLE OF CONTENT

More information

CORPORATE OVERVIEW. Can Art is proud to say that we are TS and ISO 9001:2008 certified. A. BRAMPTON, ONTARIO B.

CORPORATE OVERVIEW. Can Art is proud to say that we are TS and ISO 9001:2008 certified. A. BRAMPTON, ONTARIO B. CORPORATE OVERVIEW Can Art Aluminum Extrusion Inc. is a privately held, North American based extruder of standard and custom aluminum profiles. Since 1988, Can Art has grown from a single-press operation

More information

RAPID FIXER FACT SHEET A LIQUID RAPID FIXER FOR BLACK AND WHITE FILMS AND PAPERS. August 2002

RAPID FIXER FACT SHEET A LIQUID RAPID FIXER FOR BLACK AND WHITE FILMS AND PAPERS. August 2002 FACT SHEET RAPID FIXER August 2002 A LIQUID RAPID FIXER FOR BLACK AND WHITE FILMS AND PAPERS ILFORD RAPID FIXER is a non-hardening rapid fixer supplied as a liquid concentrate that is diluted with water

More information

The Treatment of Cupric Chloride Solution after the Etching Process by Ion Exchange Membrane Electrodialysis*

The Treatment of Cupric Chloride Solution after the Etching Process by Ion Exchange Membrane Electrodialysis* Desalination, 62 (1987) 251-257 Elsevier Science Publishers B.V., Amsterdam - Printed in The Netherlands The Treatment of Cupric Chloride Solution after the Etching Process by Ion Exchange Membrane Electrodialysis*

More information

Suggestions for Care and Handling of Fine Surgical Instrumentation

Suggestions for Care and Handling of Fine Surgical Instrumentation Suggestions for Care and Handling of Fine Surgical Instrumentation WATER Tap water should not be used for cleaning surgical instruments as it frequently contains significant quantities of foreign ions

More information

Ion Exchange Chromatography

Ion Exchange Chromatography Ion Exchange Chromatography The separation and purification of various elements by ion exchange chromatography takes advantage of the variation of the electrostatic bond energies of ions in solution. Thus,

More information

is a concentrated, multiple polyamine blend that produces a brilliantly bright deposit from alkaline cyanide-free plating solutions.

is a concentrated, multiple polyamine blend that produces a brilliantly bright deposit from alkaline cyanide-free plating solutions. Alkaline Cyanide-Free Zinc Plating Process TECHNICAL DATA 2-1-02 PROCESS FOR ALKALINE CYANIDE-FREE ZINC PLATING is a concentrated, multiple polyamine blend that produces a brilliantly bright deposit from

More information

CORROSION. quakerchem.com

CORROSION. quakerchem.com CORROSION OVERVIEW NECESSITIES FOR RUST Metalworking processes employ oil-based, solvent-based and water-based fluids to interact with the various metals. At some point, the issue of protecting these metals

More information

Technical Service Bulletin October 2013 TSB340.02

Technical Service Bulletin October 2013 TSB340.02 Technical Service Bulletin October 2013 TSB340.02 Procedure for Chemically Cleaning HYDRAcap MAX Module(s) This Technical Service Bulletin provides information for chemically cleaning HYDRAcap MAX module(s).

More information

BHS-FILTRATION INC. BHS CANDLE FILTER TECHNOLOGY FOR REFINERY APPLICATIONS

BHS-FILTRATION INC. BHS CANDLE FILTER TECHNOLOGY FOR REFINERY APPLICATIONS BHS-FILTRATION INC. BHS CANDLE FILTER TECHNOLOGY FOR REFINERY APPLICATIONS 1. Sodium Sulfate Removal from Make Up Buffer Solutions 2. Specialty Amine Filtration a. Coker Unit b. Fluid Catalytic Cracker

More information

Technical Guideline (10) Waste Minimization

Technical Guideline (10) Waste Minimization Technical Guideline (10) Waste Minimization December 2014 Introduction: Waste minimization is a practice or process through which the quantity of generated waste is reduced with the main objective of producing

More information

Reuse of Alternative Water Sources for Cooling Tower Systems Two Case Studies Using Non-Traditional Water Sources

Reuse of Alternative Water Sources for Cooling Tower Systems Two Case Studies Using Non-Traditional Water Sources Reuse of Alternative Water Sources for Cooling Tower Systems Two Case Studies Using Non-Traditional Water Sources Matthew L. Haikalis Veolia Water Solutions & Technologies April 24, 2013 Operational Priorities

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

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

Advanced Wastewater Treatment Technology. Mechanical Vapor Recompression and Membrane Polishing Presented to

Advanced Wastewater Treatment Technology. Mechanical Vapor Recompression and Membrane Polishing Presented to Advanced Wastewater Treatment Technology Mechanical Vapor Recompression and Membrane Polishing Presented to 10 th Annual Chemical Management Services Workshop San Francisco, California John Burke Director

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

WE DESIGN FOR THE FUTURE MECER CLOSED LOOP RECYCLING OF ACIDIC CUPRIC CHLORIDE ETCHANT

WE DESIGN FOR THE FUTURE MECER CLOSED LOOP RECYCLING OF ACIDIC CUPRIC CHLORIDE ETCHANT WE DESIGN FOR THE FUTURE MECER CLOSED LOOP RECYCLING OF ACIDIC CUPRIC CHLORIDE ETCHANT http://www.sigma-gruppen.com HOW THE SYSTEM WORKS The MECER process for acidic cupric chloride etching During the

More information

Guide to Reverse Phase SpinColumns Chromatography for Sample Prep

Guide to Reverse Phase SpinColumns Chromatography for Sample Prep Guide to Reverse Phase SpinColumns Chromatography for Sample Prep www.harvardapparatus.com Contents Introduction...2-3 Modes of Separation...4-6 Spin Column Efficiency...7-8 Fast Protein Analysis...9 Specifications...10

More information

troubleshooting guide

troubleshooting guide ION EXCHANGE RESINS troubleshooting guide ask yourself: what has changed? table of contents Chapter 1 Industrial Softeners.............1 Chapter 2 Primary Cation Exchanger........5 Chapter 3 Primary Anion

More information

Multiple Products in a Monoclonal Antibody S88.01 Batch Plant

Multiple Products in a Monoclonal Antibody S88.01 Batch Plant Presented at the World Batch Forum North American Conference Chicago, IL May 16-19, 2004 900 Fox Valley Drive, Suite 204 Longwood, FL 32779-2552 +1.407.774.0207 Fax: +1.407.774.6751 E-mail: info@wbf.org

More information

Environmental Water Testing: Surface Water, Groundwater, Hard Water, Wastewater, & Seawater

Environmental Water Testing: Surface Water, Groundwater, Hard Water, Wastewater, & Seawater Document: AND Sol Env 08 2013 Environmental Water Testing: Surface Water, Groundwater, Hard Water, Wastewater, & Seawater Matrix specific sample preparation and testing methods for environmental waters

More information

boiler houses Reducing water use in Guidance Leaflet

boiler houses Reducing water use in  Guidance Leaflet Guidance Leaflet Reducing water use in boiler houses Significant amounts of water are used in boiler houses to provide hot water and steam and steam-raising boilers require large quantities of make-up

More information

Avoiding Pump Wear in Centrifugal Pumps

Avoiding Pump Wear in Centrifugal Pumps Pump Wear Avoiding Pump Wear in Centrifugal Pumps Introduction: In the moment of starting a new pump, that pump is headed for a day when it will need repair even if the design and operation is correct.

More information

UniChlor. U T Technology. Website: Website:

UniChlor. U T Technology. Website:  Website: UniChlor U C T Technology Website: www.powellfab.com Website: www.uhdenora.com UniChlor U C T Technology UniChlor Technology Advanced Processes for Chlor-Alkali Production An Alternative to Purchasing

More information

Index 11.1. Page. Pumping Systems...11.2-11.4 Intensifiers...11.5 Gas Boosters...11.6-11.7 High Pressure Generators...11.8-11.9

Index 11.1. Page. Pumping Systems...11.2-11.4 Intensifiers...11.5 Gas Boosters...11.6-11.7 High Pressure Generators...11.8-11.9 Pumping Systems, Intensifiers, Gas Boosters and High Pressure Generators High Pressure Equipment Company produces a number of components and systems for general industrial, elevated pressure applications.

More information

Acidizing. Treatment in Oil and Gas Operators. Background. Acidizing Basics. Briefing Paper. Learn more at

Acidizing. Treatment in Oil and Gas Operators. Background. Acidizing Basics. Briefing Paper. Learn more at Page 1 Acidizing Briefing Paper Treatment in Oil and Gas Operators Background Oil and gas operators have used acid treatment (acidizing) to improve well productivity for almost 120 years. Acidizing predates

More information

Engineering Services for the Optimisation of Chlor-Alkali Plants

Engineering Services for the Optimisation of Chlor-Alkali Plants Engineering Services for the Optimisation of Chlor-Alkali Plants Amanda Lancaster Process Technology Manager INEOS Technologies Electrochemical Technology Business 1 Agenda The challenge of chlor-alkali

More information

http://www.cieplowniasiemianowice.pl/filtry.html

http://www.cieplowniasiemianowice.pl/filtry.html Oil skimmer is a device which helps remove surface oil. Skimmer is mounted in the selection location. An oil is absorbed by the teflon tape and is removed for example from bath to another external container

More information

Chapter 4. Forms of corrosion

Chapter 4. Forms of corrosion Chapter 4 Forms of corrosion Uniform corrosion In such type of corrosion there is a uniform decrease in the volume of the metal due to direct contact with the surrounding environment. Examples Dissolvation

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

Ammonium Sulfate WFGD Technology OVERVIEW FOR GENERAL INDUSTRY INFORMATION July 2007

Ammonium Sulfate WFGD Technology OVERVIEW FOR GENERAL INDUSTRY INFORMATION July 2007 Ammonium Sulfate WFGD Technology OVERVIEW FOR GENERAL INDUSTRY INFORMATION July 007 Background Marsulex Environmental Technologies (MET) has developed an effective ammonia scrubbing technology that removes

More information