Just Another Day at the Beach   Water & Wastes Digest May 2005   By Don Richard
Together, these systems were insufficient for near-term demand and they fell far short of the projected future needs for this fast-growing community.

Wisconsin Shaping Water Treatment   Water & Wastes Digest May 2005   By Tom Bunker, Mark White and Scott Lenhardt
Racine WTP opted for membranes because of their ability to provide an extra barrier against waterborne pathogens to the 110,000 people served by the plant.

Time Saved Testing Pays Off   Water & Wastes Digest May 2005   By Adam Potter
Many wastewater plants are switching from fecal coliforms to monitoring for E. coli and Enterococcus, because the EPA has identified these bacteria as the best indicators of fecal contamination in water.

Siphoning Out a Solution   Water & Wastes Digest April 2005   By Bob Patterson and Sophie Pease
For years the city had relied on the nearby Thornhollow Springs and a series of eight wells for water, until the EPA concluded that the aquifer was under the influence of surface water and raised concerns that waterborne pathogens could contaminate the springs.

The Application of Simplified Process Statistical Variance Techniques to Enhance the Detection of Filtration Integrity Loss   WWDmag.com January-December 2005   Mike Sadar
Process monitoring for loss of filtration integrity is often performed using basic light scatter detection methods such as turbidity and particle counting. These methods monitor for the presence of particles in the filtration effluent (permeate). The industries where these parameters are most widely used include drinking water and ultra-pure water production. The recent upward trend in the application of membrane systems for drinking water production enhances the need for technologies with higher sensitivity and greater reliability because the loss of filtration integrity could directly impact human health.
PDF Version

Providing a One-Two Punch   Water & Wastes Digest September 2004   Lianna Mah
The Oakville plant treats 109 million liters per day of water from Lake Ontario.

New Desalination Method Reduces Energy Costs   Water & Wastes Digest August 2004   By Denise Covelli
The Long Beach Seawater Desalination Research and Development Facility will be the nation’s largest, using dual-stage nanofiltration technology up to 30% more energy efficient than conventional methods

A Reliable Tool   Water & Wastes Digest April 2004   By Rick Davis
By implementing fluorescent technology in the measurement of DO levels, wastewater professionals may have a reliable tool that allows for the optimization of the biological processes and a reduction in the aeration costs related to energy usage.

Double Option   Water & Wastes Digest January 2004   John Volbeda
There are two primary technology options available for continuous dissolved oxygen measurement in aeration basins--bare- or open-electrode sensors, and membrane sensors. Both options are viable and offer plants specific benefits. The key is for plants to select which sensor will work best for their application and production workflow needs.

Finding a Sweet Result   Water & Wastes Digest October 2003   David Pearson
A new membrane filtration system manufactured by PCI Membrane Systems, Inc. allowed National Raisin Co. of Fowler, Calif., to not only cut their wastewater costs, but they have also opened up a potentially lucrative source of income.

Old School No Longer   Water & Wastes Digest October 2003   Thomas C. Schwartz
When the country's oldest private boarding school had to upgrade and modernize its wastewater treatment facility, it employed a new and innovative technology to resolve an administrative consent order (ACO) to bring itself into compliance and avoid the possibility of paying hefty fines.

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.

Taking the Salt Out   Water Engineering & Management April 2003   Bill Swichtenberg
Five large municipal water agencies have combined to advocate a significantly increased federal role in encouraging desalination. The group sees desalination as a viable, cost-effective way of making seawater and brackish groundwater reliable sources to supplement national drinking water supplies.
PDF Version

Zero Waste: A Look at the Future of Reverse Osmosis   Water Quality Products March 2003   Josh Hanford, Watts Industries
Most reverse osmosis systems waste as much as 20 gallons just to produce one gallon of product water. The new technology called "ZeroWaste" eliminates this problem by returning the concentrate water from the reverse osmosis system back to the home's plumbing, resulting in 100 percent efficiency.
PDF Version

Arsenic Treatment Options for the Southwest   Water Quality Products February 2003   Arizona Water Quality Association
While high concentrations of arsenic are found mostly in the Western region of the United States, parts of the Midwest and New England show levels of arsenic that exceed the newly approved U.S. Environmental Protection Agency (EPA) standard of 10 parts per billion (ppb). Individuals not willing to wait for their water system's compliance with the arsenic standard currently are looking for treatment systems to use in their homes. POU and even point-of-entry (POE) treatment systems are an attractive solution for these individuals. The process should begin with a basic understanding of arsenic contamination and the element's chemistry, a complete water quality analysis of the application-specific water and the knowledge of available technologies.
PDF Version

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.
PDF Version

Arsenic Overview Series - Part 2   WaterInfoCenter January-December 2003   Sherry Odom
Consumers unwilling to drink arsenic contaminated water are demanding a more rapid implementation. Publicly owned utilities, however, will be held hostage from implementing a more rapid solution due to government approval cycles, annual budgets, required biding processes and slow implementation schedules. As a result, in-home treatment systems, which immediately can be installed, are a very popular treatment option for individual homeowners. Other advantages such as low implementation/operating costs and improved flexibility make the POU/POE approach option appealing.

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.

Arsenic Overview Series - Part 7   WaterInfoCenter January-December 2003   Wes McGowan
These terms are pulled from "All About Water: An Illustrated Dictionary of Water Terminology" by Wes McGowan

ETV Testing Verifies Membrane Filtration Plant Treats Surface Water, Meets D/DBP Rule   Water Quality Products December 2002   PCI Membrane Systems, Inc.
A study published as part of the EPA's Environmental Technology Verification (ETV) Program verifies the performance of a Fyne Process membrane filtration plant tested on high organic-laden surface water in Barrow, Ark. The plant was able to remove significant levels of organics--precursors to disinfection byproducts such as trihalomethanes (THM) and haloacetic acids (HAA)--producing water that easily met the disinfection byproduct standards set by the EPA's stringent Stage 1 D/DBP Rule.
PDF Version

The Practical Use of Ozone for the Well Water Application   Water Quality Products July 2002   Roger Nathanson, Ozone Pure Water, Inc.
We?ll discuss the well ozone water treatment application. Each application is a potential business in itself, which means greater revenue and profit. All that is necessary from you is the motivation to boldly go where you have not gone before.
PDF Version

Arsenic in Drinking Water - Part 4   Water Engineering & Management June 2002   John T. O’Connor, EngD, P.E.
Editor’s Note: Part 1 of this series provided a timeline for the development of a drinking water standard for arsenic. It also summarized the political and public reactions to the U.S. EPA decision to delay and withdraw the arsenic rule. Part 2 dealt with human exposure and advances in knowledge concerning human health effects of exposure to arsenic. Part 3 summarized early data on the occurrence of arsenic in U.S. waters.
PDF Version

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.
PDF Version

Chlorination and Its Alternatives   Water Quality Products March 2002   By Anne Penkal and Nadia Abboud, Severn Trent Services, Inc.
Purification of drinking water containing microbiological contamination requires some form of disinfection treatment to kill or render microbiological organisms harmless. Of the available disinfection treatment methods for private water systems, chlorination in the most commonly used.

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.

RO Maintenance   Water Quality Products January 2002   Nevin Rudie
Understanding and reacting to the performance of a reverse osmosis (RO) system is necessary for continued successful operation. It is this interaction that allows us to quickly and correctly identify and correct issues that may arise.
PDF Version

Biofilm Elements Treat Colorado Town   Water Engineering & Management January 2002
PDF Version

Advanced Treatment for Groundwater: Treating Low-Quality Groundwater for Municipal Use   Water Engineering & Management November 2001   By Ralph Gelvin, P.E., and Don Novak, P.E.
Groundwater sources that can be used for drinking water purposes are requiring increasing degrees of treatment to meet the requirements of both the regulating agencies and the consumer.
PDF Version

Process Effectively Strips Hydrogen Sulfide Gas from Wastewater   Water Engineering & Management November 2001
PDF Version

Biofouling in Raw Water Supply Wells and Its Impact   Water Engineering & Management October 2001   Frederick Bloetscher, P.E., Gerhardt M. Witt, P.G. and Robert E. Fergan, P.E.
As membrane systems become more prominent in the treatment of well water supplies, more care must be taken to review the effects of microbiological contamination.
PDF Version

Desalination of Seawater Helps Meet Fresh Water Demand   Water Engineering & Management April 2001   J.L. Martin-Lagardette
Three French companies are meeting the water demands of large populations through the use of seawater desalination.
PDF Version

Verification Testing: The First Step to Clean Water   Water Engineering & Management April 2001   Gene C. Koontz, P.E., and Andrea L. Santa
Who is testing manufacturers’ purification systems and equipment? This article describes EPA’s Environmental Technology Verification Program.

New Cartridge-type D.O. Sensor Saves Time, Money   Water & Wastes Digest April 2001   By Jim Klauer
To address the inherent measurement problems of electrode contamination, electrolyte depletion, and membrane coating, GLI International, Inc. has introduced a dissolved oxygen sensor featuring a replaceable membrane cartridge.
PDF Version

Reverse Osmosis Membranes Help Conserve Water At the Sydney 2000 Olympic Games   Water & Wastes Digest March 2001   WWD Staff
During the 2000 Olympic Games, U.S. Filter Australia/Vivendi Water supplied a wastewater reclamation plant that recycled sewage and rainwater runoff at the games site. Part of the purification process involved the use of reverse osmosis (RO) technology.
PDF Version

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.
PDF Version

Comparison of Ultraviolet Pilot Trial with Full-Scale Operation   Water Engineering & Management January 2001   Ken Hartz, Ph.D., P.E. and Jeff Griffith
This article offers a method for comparing the results of a UV pilot system with a full-scale UV system.
PDF Version

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.
PDF Version

Choosing the Right Disinfection Technology for a Municipal Drinking Water Plant - Part 1   Water Engineering & Management November 2000   Dr. Hubert Fleming and Wayne Huebner
Managers of water treatment plants must be able to choose the right disinfection system to bring their plants into compliance with government regulations.

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.

Green Technology:Tackling Industrial Effluent   Water Quality Products March 2000   D.J. Gordon
Osmonics, Inc. and Esmil Process Systems Ltd. developed a zero discharge effluent treatment and water recovery system for the niche timber market.

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 System Brings Water to Small Island Off Washington Coast   Water & Wastes Digest February 2000
Off the coast of Washington, 32 families on Guemes Island were faced with an aging well that was drawing salt water into its system. Because groundwater is scarce on the island, residents had to rely on what little rain water soaks into the ground.

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.

Fiber Optic Fieldbus Makes Connection at Sanibel Water Company Reverse Osmosis Plant   Water Engineering & Management December 1998   John Leiter
By replacing copper wiring and hardwired relays with fieldbus systems, this plant eliminated nuisance trips and outages.

Shoring Up Future Water Supplies with RO Sea Water Plants   Water Engineering & Management October 1998   Alan Smith
As competition for limited water supplies increases, sea water treated by reverse osmosis will become more viable.

Membrane Technology Offers High Quality Water at Low Cost for Ontario Municipality   Water Engineering & Management July 1998
Two factors have significantly changed the course of the Township of Ernestown's, located in eastern Ontario, search for a cost-effective approach to upgrading its Amherst (population 6,100) water system.

Ozonation System Tested in Anticipation of Disinfection By-Product Rule   Water Engineering & Management May 1998   Aubrey LaFargue
In order to comply with more stringent government regulations, one plant converted from chlorine to ozone treatment.

Organoclay Provides Membrane Protection for Aircraft Part Manufacturer   Water & Wastes Digest February 1998

On-site System Handles Shopping Center Wastewater Treatment   Water & Wastes Digest September 1997
As part of Westbrook Factory Stores' commitment to a clean and safe environment, an advanced ZenoGem® on-site wastewater treatment and reclamation system has been installed.

Changing Reverse Osmosis Membranes   Water Quality Products October 1996   Dorothy Korszen, P.E.
Changing membranes in pressure vessels is easy with the proper tools

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.

Planting Waste Process Includes Microfiltration   Water Engineering & Management November 1994   Michael Dineen
A specialized pollution control system is used for pretreatment at a metal plating business in Massachusetts.