Vigorously promote landfill gas power generation technology With the development of cities, how to deal with the increasing urban domestic waste has become a major problem. Jin Donghan, member of the National Committee of the Chinese People's Political Consultative Conference and academician of the Chinese Academy of Engineering, suggested that landfill gas power generation technology should be vigorously promoted, which has important practical significance for promoting the reduction of greenhouse gas emissions in China. "There are two major shortcomings of the waste incineration treatment method. One is that the secondary pollution problem is not easy to solve completely; the second is that the treatment cost is too high, and it must be maintained by a large amount of government subsidies. Western countries have begun to shut down waste incineration plants in large numbers since the 1980s. We should reflect on whether large-scale use of this incineration treatment method is suitable for China's national conditions. "Jin Donghan said. Jin Donghan believes that China's traditional landfill disposal method has the advantages of low investment and low operating cost. If a garbage dump is constructed in accordance with the standards of sanitary landfill, and a landfill gas power generation device is constructed to effectively collect and rationally use the landfill gas, the landfill method is an economic, safe, environmentally friendly, and efficient solution. According to the data, in 2009, China's annual municipal solid waste disposal volume was about 200 million tons, of which about 80% was processed through sanitary landfill. There are nearly 1,000 landfills under construction and closed in the country. "If half of it is used to build landfill gas power generation devices, it can install about 300,000 kilowatts, and reduce carbon dioxide emissions by about 14 million tons a year." Jin Donghan said. Jin Donghan suggested that in order to realize China's emission reduction commitment and vigorously promote private capital investment in the development of landfill gas power generation projects, policy measures should be continuously improved to reduce the investment and operating costs of investors. Firstly, on the premise of not impacting the products of related domestic enterprises, the import tariff will be reduced or exempted for biogas generators with a unit power greater than 500 kilowatts. The second is to make sure that the landfill gas power generation project belongs to "resource comprehensive utilization", and like waste incineration power generation can enjoy VAT and refund. Third, considering that the power generation capacity of landfill gas power generation projects is generally below 2,000 kW, it is recommended that it can be directly connected to the 10 kV distribution network without having to be sent to the transmission network of the substation-because the distribution network covers a large area It is usually very close to the landfill, which can greatly reduce the line investment.
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