GENERATING ENERGY FROM WASTE IN INDIAby | 30-10-2013 12:17 |
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![]() ![]() ![]() Waste waste waste ! In today?s world every one generates something and that is waste . Every country?s problem is waste .The waste is using by many countries wisely. In In Eventually, Municipalities everywhere face the problems of waste collection, processing and disposal or treatment of voluminous solid waste produced by the cities. Moreover, the rains and humidity on the garbage promotes the bacterial multiplication and enhances the spread of infectious diseases. Due to their rich organic contents , the solid waste can be a good resource to produce manure & energy. It has been estimated that about 70 MW equivalent power could be generated from urban & municipal waste alone. This potential is likely to increase further with our economic growth. In order to recover energy from municipal solid waste (MSW) and liquid waste (MLW) , Gujarat Energy Development Agency (GEDA) Vadodara , had carried out the Prefeasibility Studies in total seven cities ( i.e. Ahmedabad , GEDA has implemented two project under MNES Waste to Energy (WTE) scheme Energy ?National policy on Energy Recovery from Urban , Municipal & industrial Wastes? and one project has been recently sanctioned to SMC by MNES . The details of respective projects is here as under : 1) 2.0 MW capacity Bio-gas based Power Generation Project at M/S Kanoria Chemicals Industries Ltd. , Ankleshwar. This project was commissioned during November (5.11.98 ) 1997-98 financial year under MNES capital investment subsidy scheme on WTE projects. The distillery having capacity of 55KLPD is generating about 675 M3/day spent wash per day . this spent wash is being treated in 2no. Anaerobic Digesters for Bio-methanation. Approximately 21000 to 24000 nm3 /day Bio-gas (containing 60 – 62 % Methane) is produced daily. The produced gas is further treated for H2S removal and clean gas is supplied to 2MW Power Plant consisting of 2 no. generators of 1.003 MW each. The Power plant is connected to existing Electrical Power Supply System. In order to have maximum benefits the Waste Heat Recovery System ( W.H.R.U.) has also been installed and about 1700 Kg/hr (at 10Kg/Cm2 pressure ) steam generation takes place daily. Further , The biological sludge /slurry from distillery ETP is piped to ETP sludge receiving tank and after de watering mixing with press mud is transformed into Bio-Compost Windrows for 30-45 days to get Bio-Fertiliser. The Power plant is working since on average 68.5 to 72.3 PLF having average monthly generation of 1005000 units. 2) Industrial Waste based 4800nm3/day capacity Bio-methanation Project at M/s Anil Starch Products Ltd., Ahmedabad. An Up Flow Anaerobic Sludge Blanket technology reactor (UASB) having total bio-gas generation capacity of 4800 nm3/day has been installed at M/s Anil Starch Products Ltd. Under Waste to Energy project related interest subsidy scheme of MNES for WTE projects during financial year 2000-2001. The project was initially completed & commissioned in April?2001, however gas generation was not up to the mark because of various teething problems , it picked up during month of August? 2001 when it reached to its design level . On average about 4300- 4400 nm3/day bio-gas generation is taking place which is used in the boilers. Having this bio-gas unit monthly savings of about Rs. 7.40 lacs ( earlier used to be incurred on coal electricity & lime for starch waste treatment ) on average is achieved by M/s ASPL . 3) Bio-gas based 0. 5 MW capacity Power Plant at Sewage Treatment Plant – ANJANA site , Surat Municipal Corporation, MNES has sanctioned 0.5 MW capacity bio-gas based power generation Project under UNDP/GEF assisted Project on ?Development of High Rate Biomethanation Processes for Reducing Green House Gases Emmission? . The project was sanctioned by MNES to SMC at the total outlay of Rs. 161.955 lacs on 50% cost sharing basis by MNES. vide its sanctioned no. PMC/182-97/ SMC dated 21st July, 2002. To monitor the implementation of the project a Project Implementation Committee (PIC) has been constituted comprising of representatives of SMC, GEDA & MNES . 4) Industrial effluent based based 5500 nm3/day capacity Biomethanation Project at M/s Riddhi Siddhi Gluco Biols Ltd., Viramgam , Ahmedabad. MNRE sanctioned a 5500 nm3 /day capacity bio-methanation project in year 2007-08. The project has been completed & commissioned in February?2008. The UASB reactor designed for 5500 nm3 is working on 90 % efficieny. The COD reduction is seen about more than 95%. On average 6100 nm3 gas is daily generated and used in the coal fired boiler , resulting to coal saving /day about 5.0 Ton . 5) Bio-gas based 0. 975 MW capacity Power Plant at Ms. Sayaji Industries , Maize Products , Ahemedabad. About 14000 nm3/day biogas is generated in the Industry as result of Biomethanationo of Industrial waste through existing UASB reactors. Approx. 20- 25% biogas quantity was being used for running their drier for gluten product and remaining biogas was flared. Based on surplus biogas (approx.12000nm3/day) 1MW capacity biogas based power plant was sanctioned by MNRE under its Biogas to Power head. The project commissioned in June?2009. 6) Industrial effluent based based 12000 nm3/day capacity Biomethanation Project at M/s Riddhi Siddhi Gluco Biols Ltd., Viramgam , Ahmedabad. The project has been sanctioned by MNRE under its programme on Energy Recovery from Industrial & Commercial effluent /waste. Basic objective of objective was to support their Coal based Co-gen power plant. The project has been commissioned in Jan?2010 and approximately 700-720 Ton coal (worth of Rs. 21.60 lacs) is saved monthly by means of biogas supply to coal fired boilers |