1.2MW GAS GENERATOR FOR A SEWAGE WATER & WASTE TREATMENT PLANT IN CHENNAI, INDIA

ewage treatment is a significant user of energy. Operation of pumps, blowers, and other equipment at a typical sewage treatment plant per person an annual electrical energy consumption requirement is in the range of 12-19 KWh (Arceivala and Asolekar, 2006). Treatment plants reduce the quantity of bio-solids through an anaerobic treatment process.

 Clarke Energy has supplied and installed a JGS 416 GS BL, 415V gas-powered genset at the Kodungaiyur sewage treatment plant (Zone II).

The wastewater treatment capacity of this plant is 120,000 m3 per day. The plant located in Kodungaiyur; Chennai treats wastewater with the primary treatment. After removing large particles, impurities, and sand particles, the sludge is separated from the treated wastewater in a primary sedimentation tank. It is then sent to the sludge concentrating tank to reduce its water content and transferred to digesters for further treatment. In this stage the anaerobic digestion AD takes place to decompose the organic matters in the sludge and generate biogas. The produced biogas is then desulphurised and used as a fuel in INNIO’s Jenbacher gas engine, specifically designed for gas application for electricity generation.

      Upon the completion of the competitive bidding process, Eco Protection Engineers Private Limited selected Clarke Energy as its Engineering, Procurement, and Construction (EPC) contractor to offer a turnkey solution for the sewage gas to energy power project at Kodungaiyur WWTP.

    A company spokesman comments: "Clarke Energy supplied INNIO’s Jenbacher lean burn gas genset model 1 x JGS 416 GS BL, 415V, giving an output of 1.2MW while running in island / isolated mode of operation. The genset is effectively managing the current load fluctuations and adapting to the varying gas quality, which has been reported from 4000 to 5500 KCal/Nm³. This performance demonstrates the Jenbacher genset’s capability to maintain stability and efficiency under diverse operating conditions. Type 4 engines are characterized by high power density and outstanding efficiency."