Synergic treatment method for household garbage and kitchen wastes

Abstract

The invention discloses a synergic treatment method for household garbage and kitchen wastes. The household garbage can be treated and the kitchen wastes can be further synergically treated in a household garbage treatment plant or a kitchen waste treatment plant. The method comprises the following steps: after mixing the household garbage and the kitchen wastes in a stock bin in the household garbage treatment plant, separating the two into dry garbage and wet garbage through a dry and wet separating system, using the separated dry garbage as a raw material for incineration power generation, and using the separated wet garbage as a raw material for dry anaerobic biogas preparation or compost preparation; and after mixing the kitchen wastes in the kitchen waste treatment plant with wet garbage separated from the household garbage treatment plant through the dry and wet separating system in the stock bin, separating the two into solid garbage and slurry through a solid-liquid separation system, using the separated solid garbage as a raw material for incineration power generation of the household garbage treatment plant and using the separated slurry as a raw material for wet anaerobic biogas preparation. The method disclosed by the invention makes full use of process equipment of an existing garbage treatment plant, and has the advantages of high efficiency, simple treatment process, low treatment cost and the like.

Description

technical field [0001] The invention relates to the field of solid waste treatment, in particular to a method for co-processing domestic waste and kitchen waste. Background technique [0002] At present, many cities have established two separate waste collection and transportation systems: one is for domestic waste in residential areas, and has established a domestic waste treatment plant; the other is for restaurants, restaurants and canteens. Kitchen waste treatment plant. In the same city, it is often necessary to build these two waste collection and transportation systems, which not only requires a huge investment, but also tends to cause low-quality waste or insufficient supply in actual operation, which is not conducive to improving the effect of waste treatment and reducing treatment costs. [0003] The Chinese patent "Method for Cooperative Disposal of Municipal Solid Waste" with publication number CN104668270A provides a method for co-processing municipal solid was...

AI Technical Summary

Problems solved by technology

However, domestic waste must be sorted out of solid organic matter, and food waste also needs to be pretreated, and a large amount of dilution water is added. The treatment process is complicated and can only be used to make a single product of organic fertilizer.

[0005] In addition, the Chinese patent of publication number CN103381420A "A comprehensive treatment device and method for collaborative resource utilization of sewage" is only applicable to the collaborative treatment of kitchen waste, landscaping waste and urban municipal sludge; Cooperative processing method of kitchen waste" only uses the waste heat steam in the waste incineration power plant as the heat source for the fermentation of food waste, and at the same time sends the sundries and biogas residues generated in the pretreatment step to the waste incineration power plant for incineration

[0006] It can be seen that the existing technology has strong limitations, narrow application areas, and the process is too complicated, and has failed to solve the problem of efficient and coordinated processing of domestic waste and kitchen waste

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