By: Sanjenbam Jugeshwor Singh.
Energy recovery from waste is the conversion of non-recyclable waste materials into usable heat, electricity or fuel through a variety of processes, including combustion, gasification, pyrolization, anaerobic digestion and land fill gas recovery. This process is often called Waste to Energy. Infact, Waste-to-Energy (WtE) or Energy-from-Waste (EfW) is the process of generating energy in the form of Electricity and/ or heat from primary treatment of waste or the process of waste into a fuel source.WtE is a formof energyrecovery. MostWtE process generate Electricity and/or heat directly through combustion or produce a combustible fuel commodity such as Methane,Methanol or Synthetic fuel.
During the 2001 to 2007 period, the Waste-to-Energy capacity increased by about four million matric tones per year. Japan and China each built several plants based on direct smelting or on fluidized bed combustion of solid waste. In china, there are about 434 Waste-to-Energy plants in early 2016.Japan is the largest user in thermal treatment of municipal solid waste in the World with 40 million tones. Some of the newest plants use Stoker technology and others used the advanced oxygen enrichment technology. Several treatment plants exist Worldwide, relatively novel process such as direct smelting, the Ebara fluidization process and Thermoselect JFE gasification and melting technology process. In India its first Energy bio-science Center was developed to reduce the country’s greenhouse gases and its dependency on fossil fuel. As of June 2014, Indonesia had a total of 93.5MW installed capacity of Waste-to- Energy with a pipeline preparation phases together amounting to another 373MW of capacity. Waste-to- Energy technology also includes fermentation which can take bio-mass and create Ethanol, using waste cellusic or organic materials. In the fermentation process, the sugar in the waste is changed to carbon dioxide and alcohol.The most common source for WtE is Incineration, which means to burn organic waste to get energy .Incination is not just conducted to recover energy rather it is most of time conducted to get rid off waste.
The solid waste management plant at LamdengKhunou established by Govt. of Manipur, after successful conversion of solid waste into manure / fertilizer in the first phase, now started generating1MW of Electricity per shift per day on trial basis successfully. Infact, solid waste treatment plant was initially lunched to produce manure/ fertilizer only from the solid waste. But now WtE project to produce Energy from Waste is being taken up in Public private partnership (PPP) model. The installation work to generate Electricity from waste at this plant is completed now. The project was taken up in association with INOVATIVE ECO-CAREPvt,Ltd and THERMOTECH SYSTEM Ltd of Ahmedabad .Now the plant started producing 1MW of electricity.
Rinku Khumukcham, Editor of Imphal Times has more than 15+ years in the field of Journalism. A seasoned editor, was a former editor of ISTV News. He resides in Keishamthong Elangbam Leikai, with his wife and parents.