Northern Indiana Power, NIPSCO cooling tower

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Courtesy of MIOX Corporation

A new onsite mixed oxidant system at the R.M. Schahfer Generating Station of Northern Indiana Public Service Co. (NIPSCO) in Wheatfield, IN, has yielded substantial treatment chemical cost savings and improved summer operation compared to the control unit cooling tower.

NIPSCO, an electric and gas utility and subsidiary of NiSource Inc., was approached about the system during a biannual technology meeting of one of its vendors, Equip Solutions Inc. Equip Solutions is currently a Midwest representative of MIOX Corp. and also handles the majority of NIPSCO's chemical feed systems, chemical feed piping, chemical tanks, and the continuous emissions monitoring at the company's Wheatfield generating station.

MIOX, of Albuquerque, NM, has manufactured onsite disinfection generators since 1994, with more than 1,500 installations in over 30 countries treating better than 6.5 billion gallons of water a day. The NIPSCO project holds the double honor of being MIOXs first power plant cooling tower installation as well as its largest cooling tower installation.

The Schahfer Generating Station lies southeast of Chicago near Valparaiso, IN, along the Kankakee River. In the immediate area is the Aukiki Wetland Conservation Area, on land donated by NIPSCO, and nearby is the Kankakee River Swampland State Conservation Area, Kankakee State Fish and Wildlife Area, and Jasper-Pulaski Fish and Wildlife Area. As such, the stations National Pollutant Discharge Elimination System (NPDES) permit requires compliance with a chlorine residual level that cannot be exceeded when discharging into the Kankakee River s final receiving waters.

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