Cooling Tower Make-up Water Treatment Equipment06/07/2011 |
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| Siemens Water Technologies in India has secured a contract to provide a water treatment system for Torrent Power Limited’s 382.5 megawatt UNOSUGEN gas-based combined cycle power plant in Surat, district Gujarat, India. Siemens will supply two Contrafast Concentric systems, which will treat water from the Tapi River and produce up to 4 million gallons per day (15,142 m3/day) of cooling tower make-up water. |
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The system, which is part of a capacity expansion at the power plant, is scheduled to be commissioned in September 2012.
Power plants need a consistent, reliable source of water for cooling tower make-up that is also cost effective and sustainable. In many cases, cooling tower make-up water must be treated for suspended solids reduction and/or hardness reduction. With properly treated water, the potential for scaling in the cooling tower is significantly reduced. This reduces cooling circuit cleaning requirements, extends the life of the cooling equipment, and reduces the cooling tower blowdown flow to the environment.
The Siemens Contrafast Concentric system supplied for the UNOSUGEN power plant is a high-rate clarification and thickening process that consists of a solids contact reaction chamber, clarifier with tube settler and gravity thickener in a single tank. The entire process is contained in a single, unitised steel basin, and is designed to simplify installation time and reduce cost. The design allows up to an 80% reduction in footprint compared to conventional clarification systems, and the process enhances suspended solids’ removal, lime softening and heavy metals removal. Torrent Power chose the Contrafast Concentric system for the UNOSUGEN plant mainly because of the system’s integral solids thickener and minimal footprint.
Siemens Water Technologies in India will engineer and source the system hardware, with design review and on-site technical services provided by Siemens Water Technologies in Ames, Iowa, U.S.A. Torrent Power is one of the largest private players in India with integrated operations in the power sector. It generates 1,647.5 megawatts of power and distributes to nearly 3 million customers in the cities of Ahmedabad, Gandhinagar and Surat in Gujarat, Bhiwandi in Maharashtra, and Agra in Uttar Pradesh.
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