Siemens Water Technologies in India has secured a contract to provide a water treatment system for Torrent Power Ltd.’s 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 gal per day of cooling tower make-up water.
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 hardness reduction. With properly treated water, the potential for scaling in the cooling tower is significantly reduced. This extends the life of the cooling equipment and reduces blowdown flow to the environment.
The system supplied for the 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-unitized 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.
Siemens will engineer and source the system hardware with design review and on-site technical services provided by Siemens Water Technologies in Ames, Iowa.
Source: Siemens Water Technologies
