Biogas Plant at Amma Unavagam premises, North Zone

Budget : 10 Lakh

Innovation Type (Process/ Product): Product

About the Project:

Amma Unavagam is a food subsidization programme run by the Government of Tamil Nadu. Under the scheme, all Municipal Corporations of the state run canteens serving subsidized food at low prices. The Coimbatore City Municipal Corporation (CCMC) generates 50 MT of waste from large community kitchens, hotels and markets. Instead of disposal at Vellalore dumpsite, the CCMC generates biogas for cooking purpose, from this waste. The CCMC has installed a biogas plant at Amma Unavagam premises at Chitra Nagar, Saravanampatty of the North Zone. Vegetable waste, cooked and uncooked food waste from the hotels and restaurants in and around Saravanampatty including the Amma Unavagam are used to generate biogas through anaerobic digestion. Initially, 21 kg of LPG gas was consumed per day which amounted to a daily expenditure of Rs.1500 resulting in a total expenditure of Rs.45,000 per month. About 27 LPG cylinders (each weighing 19 kg) were utilized for cooking purpose in a month. After installation of this bio-gas plant, the utilization of LPG cylinders has been reduced to 1 per three months. Waste is collected by the waste collectors of CCMC which is then fed into the mixer for slurry preparation. Water is mixed in the ratio 1:1 before putting it into the predigester tank. The slurry is stored in an elliptical digester tank. It takes about two to four weeks to digest the waste depending on the temperature. Thereafter gas is produced and sent out through the gas outlet at the top of the plant. This gas burns with a blue flame and is being used for cooking. The gas is routed through the smaller pipes to 2 stoves and 2 idli cookers.

Sector : Solid Waste Management

Pilot City : Coimbatore, Tamil Nadu

Ownership : Coimbatore City Municipal Corporation

Know More : commr.coimbatore@tn.gov.in

Connect : commr.coimbatore@tn.gov.in

Solutions

Best Practices

Solid Waste Management Practices in Urban India

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