Koch Membrane Systems helps protect NYC watershed at Heritage Hills WWTP

WILMINGTON, MA, Nov. 14, 2006 -- Koch Membrane Systems, Inc. (KMS), a world-class developer and manufacturer of innovative membranes and membrane filtration systems, has been selected to provide ultrafiltration (UF) equipment for a project in Westchester County, New York. Carlin Contracting Company, Inc. of Waterford, CT, will install the UF system as part of an upgrade to the Heritage Hills Sewage Works Corporation Wastewater Treatment Plant (WWTP) in the Town of Somers, about one hour north of New York City.

Currently, wastewater processing at the Heritage Hills WWTP includes primary treatment, biological contactors, clarification and gravity sand filtration. To provide advanced tertiary treatment, four compact membrane filtration packaged systems will be supplied by KMS. Permitted discharge flow from the Heritage Hills WWTP is about 700,000 gallons per day.

The packaged UF systems will reduce turbidity, suspended solids and pathogenic contamination, including Giardia, Cryptosporidium and viruses. The membrane systems are required to achieve 3-log removal of Giardia and a turbidity of less than 0.5 NTU.

In addition to the membrane filtration system, Carlin Contracting will install a new concrete equalization tank, sludge storage tanks and an ultraviolet disinfection system. It will also replace the existing sand filters and coarse bubble aeration system with a fine bubble aeration system.

The four packaged UF systems will consist of low-pressure, hollow fiber membrane cartridges mounted on process manifolds, along with necessary tanks, controls, valves and piping. The self-contained packaged system is completely frame-mounted, SCADA-compatible and pre-wired, with minimum field connections. Skid operation is highly automated, requiring limited operator attention.

The upgrade of the Heritage Hills WWTP is being performed pursuant to the NYC/DEP Watershed Memorandum of Agreement that provides multi-million dollar project funding to protect the NYC Watershed, in part, by upgrading municipal wastewater treatment plants in watershed communities.

Carlin Contracting (www.carlincontracting.com) provides a variety of construction services such as turnkey design-build and conventional low-bid construction projects. Since 1975 Carlin Contracting has successfully completed hundreds of diverse projects, including water and wastewater treatment facilities.

Koch Membrane Systems Inc. (www.kochmembrane.com) has been a global leader in separation and filtration products for more than 30 years. A designer and manufacturer of state-of-the-art membrane cartridges and elements, as well as complete membrane systems, KMS products are specified for the most demanding applications. To enhance membrane performance, KMS offers a line of antiscalants and cleaning chemicals, and provides a wide range of maintenance and technical service programs. The company has supplied membranes for more than 15,000 systems installed around the world, serving the food processing, life sciences, and general manufacturing industries, as well as providing potable water and wastewater treatment technologies for communities of all sizes. Based in Wilmington, MA, Koch Membrane Systems is a Koch Chemical Technology Group LLC company.

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