|
|
|
|
Electronic Scale Prevention
Water & Wastes Digest
April 2005
By Richard W. Lee
City of Las Vegas wastewater recycling facility uses advanced technology to eliminate mineral scale fouling without chemicals or maintenance
|
|
RO Can Make Sense
Water & Wastes Digest
November 2004
By Michael Norton, Birol Shaha and Dr. YuJung Chang
Pristine water
is being used to
irrigate golf courses. One choice may be
to learn to use reclaimed water
to do this job.
|
|
Answering the Challenge
Water & Wastes Digest
May 2004
By Eugene R. Reahl
San Diego uses EDR technology to produce low salinity irrigation water from reclaimed municipal wastewater
|
|
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.
|
|
Talkin About Regeneration
Water & Wastes Digest
October 2003
Tim Gregorski
Studies show that membrane regeneration typically results in a 40% increase in permeate flow, a 38% decrease in differential pressure and a 3% increase in salt rejection. The Bakersfield membrane regeneration facility has the ability to process up to 60 membranes continuously for 24 hours a day, which allows the facility to produce better than average turn-around times.
|
|
|
|
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.
|
|
Brominated Resins
Water Quality Products
July 2003
Ken Korslin, CWS-III, Pentair Water Treatment, Plymouth Products Division
In 1957 The Dow Chemical Corp. addressed the negatives of using bromine by creating a brominated ion exchange resin, which opened up the use of bromine in offshore water treatment applications.2 Today, polybromide resin is used in many offshore water treatment systems. The fact that bromine can be added to water that previously has been chlorinated makes polybromide resin a practical solution to accommodate the multiple sources of water in offshore applications.
PDF Version
|
|
Research Racks Up Recognition Points for POU/POE
Water Quality Products
June 2003
Wendi Hope King
Some really important research going on right now, which is critical for the point-of-use/point-of-entry (POU/POE) industry in order for POU/POE treatment to become an accepted practice for small public water system compliance. It seems as though we are closer than ever to finding acceptance in this arena.
PDF Version
|
|
War Spurs Interest in Water Treatment
Water Quality Products
May 2003
Wendi Hope King
It was September 11 that originated the drive for the country to take a closer look at protecting its citizens. Our nation's drinking water has since risen to become a top priority for protection.
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
|
|
Point-of-Use Reverse Osmosis
Water Quality Products
February 2003
Tony Pagliaro
As the residential point-of-use (POU) reverse osmosis (RO) industry approaches its 35th anniversary, it is time for a reality check on the industry's progress to date as well as a look ahead to new technologies or improvements that the industry may introduce for POU RO systems in 2003.
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 7
WaterInfoCenter
January-December 2003
Wes McGowan
These terms are pulled from "All About Water: An Illustrated Dictionary of Water Terminology" by Wes McGowan
|
|
Australian Microfiltration System is World's Largest For Potable Water Treatment
Water & Wastes Digest
November 2002
The AQUA 2000 Project is a build-own-operate-transfer (BOOT)
project, delivered and operated by Vivendi Water Australia. It includes the
construction and operation for 25 years of a water treatment scheme for the
Coliban Water Authority in Victoria, located in southeastern Australia.
|
|
Mississippi Town Installs Nation's First RO/Ozone System
Water & Wastes Digest
November 2002
The City of Pascagoula, Mississippi turned to Osmonics of Minnetonka, Minn., to provide a viable solution for the removal of undesired characteristics from their water supply, ensuring compliance with existing and 2001 EPA regulations. Osmonics' process of combining low energy RO in tandem with ozone generation and contacting equipment proved to be the optimal solution to Pascagoula's water deficiencies.
|
|
The Standard Septic System: Still an Effective Choice for Onsite Wastewater Treatment
Water Engineering & Management
October 2002
Dennis F. Hallahan P.E.
In 1997, EPA and Congress officially recognized onsite wastewater treatment systems (commonly referred to as septic systems) as a viable, long-term solution for treating wastewater. This was an important designation since nearly 40 percent of new homes in the United States use this type of system to treat household wastewater.
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
|
|
Decentralized Wastewater Treatment: Community Building and the Watershed Agenda
Water Engineering & Management
May 2002
Craig Lindell
Decentralized wastewater treatment presents us with a range of possibilities for community preservation and watershed management. However, these possibilities remain obscured by the limitations of the onsite codes and unforeseen by municipal wastewater authorities unaware of decentralization or reluctant to explore its range and potential.
PDF Version
|
|
Municipalities and Developers Eye Better Land Use Through Drip Distribution
Water Engineering & Management
May 2002
David Linahan, P.E.
While the face of Pennsylvania’s rural communities continues to change from bucolic farms to mushrooming suburbs, new residents are asking their municipal leaders to preserve as much of that original pastoral setting as possible. While that can prove to be a constant battle between preserving green space and building new roads, schools and shopping centers, one area that holds promise for resolving those competing demands is in the area of municipal sewage treatment.
PDF Version
|
|
Automated Chlorine Control Brings Precision to Water Reclamation Operation
Water Engineering & Management
May 2002
By Steve Kobler
Using reclaimed water for non-potable purposes as a means of conserving potable water supplies is the most prevalent method of water reuse in the United States today. One of the significant challenges for water reclamation facilities is to keep up with the demands for safe, compliant chlorine (Cl2) treatment. One utility that is effectively meeting this challenge is Southern California’s Otay Water District.
|
|
Softeners Treat Truck Wash Water
Water Quality Products
March 2002
When it comes to keeping their big rigs clean and sparkling, most truck drivers are as particular about a good wash as any car owner might be—maybe even more particular considering the dollars some have wrapped up in their 18-wheelers. Owners of large vehicle fleets such as buses and delivery trucks seem to appreciate the value a clean machine has in properly projecting their corporate image. During winter months in many northern states, just cleaning off road salt and sand is imperative to vehicle maintenance.
|
|
|
|
|
|
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.
|
|
|
|
|
|
California Plant Combines New Treatment Technologies
Water & Wastes Digest
November 1999
Industry and irrigation place an extremely high demand on our dwindling water resources. Their demands, however, can be easily satisfied with reclaimed water and a principle source of this water is the effluent from local sewage treatment facilities.
|
|
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.
|
|
The Onsite Revolution: New Technology, Better Solutions
Water Engineering & Management
October 1998
Stephen P. Dix, P.E., and Valerie I. Nelson, Ph.D.
New techniques in single-family, onsite and cluster technology are stirring up interest in the wastewater treatment industry.
|
|
|
|
|
|
|
|
