Resourceful and clean sorting method of household garbage

Abstract

The invention discloses a resourceful and clean sorting method of household garbage. The method comprises the following steps: breaking bags after sterilizing and deodorizing; tearing the garbage to pieces of 1-25cm and sterilizing and deodorizing again; crushing the treated garbage; squeezing the crushed garbage; placing squeezed waste liquid in an anaerobic fermentation system; sorting the squeezed garbage with a 2-15mm garbage screen, wherein the substance below the screen drops into water, and is screened by a 50-100 mesh screen to obtain paper slurry and the obtained paper slurry is dewatered and squeezed to obtain paper slurry crude product; mud and sand are removed from heavy substance after the paper slurry is separated and the heavy substance enters a construction material production line for sorting out of colored metal and is made to construction materials; the substance above the screen enters a floating sorting water box; substance with relative light specific weight such as plastic is separated; the light substance flows to a 1-5mm screen with the water and is transmitted to a plastic essence production line after being spinning-dried and dewatered. According to the method, the household garbage is effectively separated and is finally all processed to products and zero burning, zero land filling and zero emission are realized.

Description

technical field [0001] The invention belongs to the field of domestic waste resource utilization, relates to domestic waste sorting, in particular to a clean sorting method for domestic waste resource utilization. Background technique [0002] At present, my country's municipal solid waste has seriously affected people's normal life. About 1 / 3 of the cities in China are suffering from "garbage siege", and the disposal of municipal solid waste is a worldwide problem. The way out to fundamentally solve the problem of municipal solid waste disposal is to classify and recycle the waste so that the waste can be turned into resources and recycled. If the problem of urban waste classification is not solved, the sustainable development of the city cannot be realized. However, since my country's urban domestic waste has been treated and placed without classification, it is mainly collected and transported in a mixed manner, and the garbage components are complex, reaching more than ...

AI Technical Summary

Problems solved by technology

[0003] Due to the characteristics of complex components and high water content of domestic waste, the metal, plastic, glass, compostable materials and other substances in the waste cannot achieve a good separation effect, so it is not possible to copy the separation technology in other fields

In addition, some domestic waste sorting technologies abroad cannot adapt to the characteristics of our domestic waste, so the effect of sorting is not obvious

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