Community organic matter in-place digestion degradation biogas preparation electrical power generating system, and applications thereof

Abstract

The invention provides a community organic matter in-place digestion degradation biogas preparation electrical power generating system. According to the community organic matter in-place digestion degradation biogas preparation electrical power generating system, kitchen waste of each household in a community is smashed into small particle organic waste, and is mixed with toilet wastewater of each household and community green garbage, and high concentration waste water is obtained via concentration; the high concentration waste water is subjected to anaerobic digestion so as to obtain biogas and a digestion liquid; biogas is subjected to desulfuration purifying so as to obtain pure biogas, the biogas is used for generating electric energy via combustion in an internal combustion engine, and electric energy is recycled back to users in the community; the digestion liquid is treated so as to obtain a fertilizer and terminal waste water; and terminal waste water is subjected to simple treatment in septic tanks, and then is discharged into municipal sewage pipe networks. The community organic matter in-place digestion degradation biogas preparation electrical power generating system is capable of realizing pretreatment of waste sources, and in-place anaerobic digestion, so that technological process is short, treatment cost is low; kitchen waste is not stacked or transported, environment pollution is not caused, and transportation cost is reduced; and at the same time, electric energy generated by the community organic matter in-place digestion degradation biogas preparation electrical power generating system can be used, new energy policy subsidies from the government can be obtained, and economic efficiency maximization is realized.

Description

technical field [0001] The invention belongs to the technical field of energy and environmental protection, and in particular relates to a biogas power generation system by in-situ digestion and degradation of organic matter in a community and its application. Background technique [0002] At present, the organic waste treatment method in urban communities is that the kitchen waste is merged into the municipal waste into the waste treatment plant for incineration and landfill, and the toilet flushing sewage is discharged into the urban underground water pipe network and collected in the sewage treatment plant for treatment. On the one hand, this treatment method wastes the chemical energy of the organic waste itself, on the other hand, it increases the load of the garbage treatment plant and the sewage treatment plant, and increases the cost of organic waste during transportation. [0003] Chinese patent CN102167468B discloses "a combined treatment process of urban sludge, f...

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Problems solved by technology

However, the above-mentioned patents all require all kinds of wastes to be stacked together, and the problems involved in the stacking space and transportation links may pollute the environment and increase the cost of organic waste treatment; in addition, urban sludge, solid domestic Garbage and other organic wastes have complex components, some of which cannot even undergo anaerobic fermentation, and have a greater impact on the effect of anaerobic digestion when they are treated together with kitchen waste and toilet flushing waste, and the pretreatment of urban sludge and solid domestic waste The processing steps will also further increase the processing cost

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