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.

Greensand Process Removes Iron, Manganese, Arsenic from Groundwater   Water & Wastes Digest March 2003
Manganese greensand is a specially processed medium for iron, manganese, and hydrogen sulphide removal. This premium non-proprietary filter medium is processed from glauconitic greensand on which a shiny, hard finite thickness manganese oxide coating is formed and is firmly attached on every grain by a controlled process.

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.

Filter Housing Design Fits Height, Seismic Stress Needs   Water & Wastes Digest November 2002
Occasionally, height is an issue in a filtration system's housing design. A few years ago, Eden Equipment Company of Huntington Beach, Calif., was approached by a client with just this issue. Due to the client's specific requirements for their system, Eden's original ideas and drawings for this horizontal vessel needed to be redesigned. In addition to the height restrictions on their system, they also needed a design that could withstand a Seismic Zone 4 earthquake.

Packaged Treatment Plant Treats Tough Water Supplies Consistently, Economically   Water & Wastes Digest May 2002   Darin St. Germain
Since the 1960s, municipalities and industries have used packaged water treatment plants to successfully and economically treat small water supplies. These packaged plants have offered a smaller footprint, lower capital cost and easy operation.

Increased Treatment Security, Process Optimization Through Improved Monitoring Techniques   Water & Wastes Digest May 2002   Robert L. Bryant
Recent implementation of the Long Term 1 Enhanced Surface Water Treatment Rule (LT1ESWTR) has increased potable water sampling and analysis requirements for an additional 11,000 treatment plants serving more than 18 million Americans.