Metals Plant Needs High-Purity Water   Water Quality Products July 2003   Crown Solutions, Inc.
Dayton Progress Corp.'s focus has been on manufacturing metal punches, punch blanks and metal stamping tools. It also would take experienced water treatment professionals to ensure that the proper quality water was used in each process. That is why it relied on Crown Solutions, Inc. to manage the point-of-use (POU) and point-of-entry (POE) water treatment for each of its manufacturing processes that required water.

Water Treatment: Thinking Small   Water & Wastes Digest May 2003   Richard Merwin
As populations grow, as urban, suburban and ex-urban areas expand, demand for water increases and safety standards rise. An effective and creative way to deal with problems of growth and resource management might just be to think small. A case in point is the Olivenhain Municipal Water District's (OMWD) treatment facility in San Diego County, California.

Filtration Fundamentals   Water Quality Products March 2003   Bill Kavey
Over the years, water quality has noticeably deteriorated worldwide. This decline in water quality stems from the extreme demand on very limited natural resources. Various principles of filtration are used in many applications to improve the general quality of the water that is being treated. Along with screen filters, coagulation/filtration, neutralizing filters, oxidizing filters, clairifying filters and carbon filters are other treatment methods that may be used.
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Dried Up: Raisin Producer's New Process Cuts Wastewater and Odors   Water Engineering & Management January 2003   David Pearson
Thanks to a new membrane filtration system, National Raisin Company, Fowler, Calif., not only has been able to cut its wastewater costs, but it also has opened up a potentially lucrative source of additional income.
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Arsenic Overview Series - Part 3   WaterInfoCenter January-December 2003   Sherry Odom
In addition to officially sponsored research projects being performed throughout the world (see Section V for more information on research), many universities, government organizations and industry professionals are active in providing solutions to this issue. The following papers have been presented on arsenic treatment, health effects or policy issues at various tradeshows and conferences throughout the United States.

Ultraviolet Dechlorination Technology   Water Quality Products July 2002   Aquionics
At the Procter & Gamble manufacturing plant in Greensboro, N.C., an Aquionics ultraviolet (UV) dechlorination unit was installed before two banks of reverse osmosis (RO) membranes. Trials that ran soon after the UV system’s installation showed a dramatic reduction in the RO membrane wash frequency—down from an average of eight cleanings per month to only two per month.
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Membranes: Fouling & Cleaning   Water Quality Products May 2002   Bjarne Nicolaisen
Membrane technology offers the possibility of managing total water resources. The spiral wound membrane element configuration is the most widely used due to its high packing density and relatively low price. This article will describe some technological advances in the area of innovative new membranes and application concepts for spiral wound membrane elements.
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Production of High Purity Water From Seawater   Water Quality Products March 2002   Contributed by Ted Prato, Erik Schoepke, Lance Etchison, Tom O’Brien, Brian Hernon and Kit Perry, I
The Diablo Canyon Power Plant at Avila Beach in California utilizes seawater for both cooling water and makeup water for steam generation. Ionics, Inc., Watertown, Mass., designed and built and now operates a complete water treatment system serving the high-purity water needs of this power plant. Over the past eight years, the seawater treatment section has demonstrated excellent long-term performance as a result of strong design, consistent maintenance and qualified operators.

Slowsand - Nanofiltration in Small Drinking Water Systems   Water Quality Products January 2002   C. Brent Cluff, Ph.D.
The patented combination of slowsand with nanofiltration offers benefits that merit considerable discussion. This combination successfully was piloted by the University of Arizona beginning in 1987.
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Ultrafiltration Plant Provides Potable Water   Water Quality Products December 2001   Contributed By PCI-Water
West of Scotland Water (WoSW) awarded a contract, under competitive tender, for its first ultrafiltration plant to PCI-Water. This is the first installation in the United Kingdom using a hydranautics-based UltraBar system.
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Continuous Microfiltration System Ensures Safe Drinking Water For Wisconsin Residents   Water & Wastes Digest May 2001
The Kenosha Water Utility treatment facility, located on the shores of Lake Michigan in Wisconsin, needed to upgrade its two plants to meet the expanding water needs of the community it services. Continuous microfiltration helped meet those needs.
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Ultraviolet System Design   Water Quality Products May 2001   Adam Donnellan
In the last issue, we reviewed ultraviolet (UV) disinfection as a suitable technology for treating biologically unsafe water supplies. In this article, we will focus on system design and understanding the many available options for residential and commercial applications.
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Choosing the Right Disinfection Technology for a Municipal Drinking Water Plant - Part 2   Water Engineering & Management January 2001   Dr. Hubert Fleming and Wayne Huebner
These profiles of various disinfection processes can help managers decide which process is best suited for their treatment plant.
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Ultrafiltration   Water Quality Products December 2000   Mike Sadar
Ultrafiltration (UF) rapidly is becoming a common and practical method of preparing pure water that is free of particulate matter.
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Water Reuse for Drought-proof Industrial Water Supply in San Diego   Water & Wastes Digest November 2000
A 200,000 gallon per day (gpd) advanced microfiltration system treats secondary wastewater effluent for reuse as process water for Toppan Electronics, Inc. in San Diego, Calif.

In-Home Systems: Utilizing RO and NF Elements   Water Quality Products October 2000   Jon Goodman
Innovations in membrane technology, which has been used in major industries and hospitals, are driving the industry into the home.

Membrane Filtration As an Alternative: Part 2   Water Engineering & Management August 2000   Dr. Mohamed Lahlou
Part one of this article appeared in the July issue and discussed microfiltration and utrafiltration. This article discusses nanofiltration and reverse osmosis.

Membrane Filtration as an Alternative: Part 1   Water Engineering & Management July 2000   Dr. Mohamed Lahlou
Once considered a viable technology only for desalination, membrane processes are increasingly employed for removal of bacteria and other microorganisms, particulate material and natural organic material that can impart color, tastes and odors to the water.

Teamwork Provides Water Recovery/Waste Dehydration Process Success   Water Engineering & Management July 2000   Andrew Starzecki
Goulston Technologies has practiced evaporator techniques over four years to separate water from oil and surfactant mixture. A joint development effort was pursued with a local company, Recovery Technologies Corporation (RTC), Charlotte, N.C., to take the evaporation process one step further in terms of dewatering, and also toward active product recovery and potential recycle.

Facility Combines Two Technologies, Increases Water Quality   Water Engineering & Management March 2000

The Challenge of Membrane Maintenance   Water Quality Products February 2000   Peter Cartwright
The membrane processing technologies of microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO) are widely used to separate suspended and dissolved materials from water solutions in numerous industrial, medical and drinking water applications.

Desalination of Seawater and Brackish Water   Water Quality Products January 2000   Wil Pergande and Barry Abolmaali
The increasingly broad range of requirements for water quality has motivated the water treatment industry to refine existing techniques, combine methods and explore new water purification technologies including desalination.

Manufacturing with Membranes   Water Quality Products March 1999   Steve Morris
An overview of various filtration methods and their applications.

Membrane Filtration for Water and Wastewater   Water Quality Products February 1999
Membrane filtration, widely used in chemical and biotechnology processes, is already established as a valuable means of filtering and cleaning wastewater and industrial process water.

Strategies for Minimizing Ozonation By-Products in Drinking Water   Water Engineering & Management February 1999   Thomas Grosvenor
This paper summarizes ozonation and by-product formation chemistry as well as ways to control by-product formation.

Advanced Water Treatment Technologies May Bring Repurified Water to San Diego   Water Quality Products March 1998   Inge bisconer
"In four years, half of San Diego may be filling its glasses with tap water that once ran through its toilets."

Filtering Through the Claims of Varying Water Treatment Methods   Water Quality Products April 1997
A thorough discussion of not only water treatment systems, but also the contaminants they remove.
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Microfiltration: How Does it Compare ?   Water Quality Products August 1996   Thomas Muilenberg
Increased focus on technologies that meet tighter regulatory requirements and increased public pressure has motivated municipalities to take a serious look at microfiltration (MF) membranes as a viable treatment option. This article is intended to familiarize you with the basics of microfiltration and discuss how it compares to conventional alternatives

Ultrafiltration Basics   Water Quality Products April 1996   Lynn Cotterill
Municipal and industrial sectors are looking to new and innovative technologies to meet the demands of modern day consumers' requirements. One such technology is ultrafiltration.

Membrane Applications in Water Plants   Water Engineering & Management August 1995   Ian Lisk
Faced with upgrading aging facilities, a Florida water utility decided to incorporate reverse osmosis.

Membrane Specialists Gather for International Conference   Water Engineering & Management May 1995   Ian Lisk
The latest on membrane technology for water treatment.