How to minimize the amount of landfill and make it wasteful? Recently, the garbage extrusion separation device successfully developed by the China Academy of Launch Vehicle Technology 18 was used for the first time in the Dongcun Comprehensive Treatment Plant in Beijing for extrusion and separation of food waste, and the test was successfully completed.
The high-pressure extrusion separation process, which is the core of the refuse extrusion separation device, uses high-pressure hydraulic extrusion pressures exceeding 100 megapascals to force the refuse to be squeezed in a special surface-filled pipe to complete the solid and liquid waste. Separated. It has the advantages of high automation and high production efficiency.
It is common practice in the world to dispose of municipal wastes using a high-pressure extrusion separation process to separate solids from liquids. The separated solid waste is converted into electric energy through incineration treatment. After incineration, physical performance is reduced by 80%-90% and weight is reduced by 70%. It can be treated by landfill or converted into building materials; liquid waste is transformed into chemical energy through composting. Therefore, wastes treated by high-pressure extrusion and separation can maximize the utilization of waste resources.
At present, there are three types of municipal solid waste disposal methods: incineration, sanitary landfill and composting. Waste disposal in China is mainly landfill, and waste incineration is in its infancy. (Hu Lijuan)
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