::::::::::: Issue 16, January 2007 :::::::::::

In This Issue: Dry Emergency Scrubber Proves Cost-effective Solution in Stockton, California Accolades Abound for Pennsylvania Wastewater Treatment Facility On-site Disinfection Helps Ensure Safety at British Columbia Water Treatment Facility Effective Pretreatment of Potable Water in Jiaxing City, China Finding a Solution for Arsenic in a Refining Company's Wastewater

La Vergne, Tennessee Enters Public-Private Partnership for Water Services New Management Resource for Florida Community Development Districts and Homeowners Associations New Sanitation Devices for Marine Market Flexible Capital Leasing and Service Agreement for Arsenic Removal Systems U.S. Patent Awarded for Method of Removing Silica from Adsorption Media Construction Begins at One of U.K.'s Largest Tertiary Treatment Plants New Web Site Offers Latest Information on Intelligent Water Meters New Underdrain Filter Block Promotes Stability During Backwash Procedures New Durable Coating System for Marine Sanitation Devices

Dry Emergency Scrubber Proves Cost-effective Solution in Stockton, California

Since its construction in 1977, the Stockton East Water District's Dr. Joe Waidhofer Water Treatment Plant in Stockton, Californaia has utilized two Fischer & Porter gas chlorinators for water disinfection. For more than 29 years, the equipment provided reliable and efficient disinfection for the 290,000 plus residents of the Stockton area, located 80 miles due east of San Francisco. When the district recently looked for a new disinfection system, they also look for the most cost-effective way to meet Uniform Fire Code (UFC), which requires that a self-contained scrubbing system be available for emergency use when using gas chlorination.

Click on the link below to find out how the district came to select a dry emergency scrubbing system.

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Accolades Abound for Pennsylvania Wastewater Treatment Facility

Frequent upgrades, the ability to handle various capacities and recognition by the EPA have resulted in a sense of pride in the employees at the Lititz, Pennsylvania Sewer Authority Wastewater Treatment Plant.

Click on the link below to read an article on this facility, reprinted by permission, which appeared in the September 2006 issue of Water & Wastes Digest.

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On-site Disinfection Helps Ensure Safety at British Columbia Water Treatment Facility

Constructed in 1997, the District of Chetwynd Water Treatment Plant in British Columbia treats nearly 2,500 cubic meters of water per day using gas chlorination as its primary form of drinking water disinfection. With recent concerns about the safety of chlorine gas, including potential eye, skin and respiratory irritation and the risk of death with high exposure, the district recently elected to switch to hypochlorite generation as its primary means of disinfection.

To learn more about Chetwynd's water treatment facility and the benefits of hypochlorite generation, click on the link below.

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Effective Pretreatment of Potable Water in Jiaxing City, China

Jiaxing City, China, needed to construct a new water treatment plant to purify polluted water from the local Yen Ping Tung River in order to meet a growing demand from local industry and an expanding population. Monitoring of river water quality revealed that it was moderately contaminated with ammonium, oxidized nitrogen, organics, iron and manganese. Conventional chemical and physical treatment methods were not cost effective in removing ammonium nitrogen and organics from the river water, so a biological treatment step was considered for pre-treatment.

To find out about the challenges of polluted water in China and the system selected by Jiaxing City, read on.

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Finding a Solution for Arsenic in a Refining Company's Wastewater

Worldwide media attention on arsenic in drinking water is also shedding light on the problem of arsenic in industrial wastewater. Arsenic is found in rocks and soil that can be released into the environment through geological events, such as volcanic activity and erosion. Some industrial processes, such as mining, smelting and the production of paints, metals, soaps, dyes, drugs, semi-conductors and wood preservatives, may also release arsenic into the environment.

Michigan wastewater remediation company, Great Lakes Carbon Treatment, was hired by a Kentucky refining company to assist their clean-up efforts for wastewater generated from cleaning barges used for transporting petroleum.

Click on the link below to find out the company addressed the arsenic problem.

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