Siemens will supply two Contrafast Concentric systems, which will treat water from the Tapi River and produce about four million gallons per day of cooling tower make-up water.
The system, which is part of a capacity expansion at the power plant, is scheduled to be commissioned in September 2012.
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, unitized steel basin, and is designed to simplify installation time and reduce cost.
The design allows about an 80% reduction in footprint compared to conventional clarification systems, and the process enhances suspended solids’ removal, lime softening and heavy metals removal.
