Household waste circular sorting, biological treatment comprehensive utilization and reduction technology

Abstract

The invention relates to a household waste circular sorting, a biological treatment comprehensive utilization and a reduction technology, which comprises the following steps: 1) carrying out a rough flotation process; 2) carrying out a mechanical sorting process for multi-stage sorting, wherein the wastes are divided into several kinds, such as metals, plastics, organic matters and the like; 3) carrying out a crushing process, wherein the sorted organic matters are sent to a pulverizer for crushing to obtain the particles with the diameter between 5 and 20mm; 4) carrying out a high temperature anaerobic process, wherein the crushed organic matter particles are sent to a biological anaerobic system for high temperature anaerobic treatment; 5) carrying out a wet type separation process; and 6) carrying out an aerobic compost process. The invention has the following beneficial effects: 1) the household wastes are subjected to the mechanical sorting for resource treatment; 2) CH4 gas generated by using anaerobic process provides heat energy inside and provides civil gas outside, therefore, energy input can be reduced, no harmful gas is discharged, and the pollution on the environment can be avoided; and 3) the only existed 5% useless wastes can be subjected to landfill, so that the waste landfill amount can be substantially reduced.

Description

technical field [0001] The invention relates to a comprehensive treatment process of domestic garbage, and belongs to the field of harmless and resourceful treatment of domestic garbage. Background technique [0002] With the rapid development of my country's economy, people's environmental pollution is becoming more and more serious. Environmental pollution is mainly the multiple pollution of the environment by industrial waste gas, sewage, and solid waste. Effective treatment of domestic waste in solid waste has always been a difficult problem. The municipal solid waste disposal methods in our country are still relatively rough, mainly in three ways: landfill, incineration, and composting. Landfill is a primitive and direct treatment method, and it also has the greatest, longest and irreversible impact on environmental pollution, including pollution to soil, groundwater, and air, while occupying a large amount of land. Most of domestic waste is organic matter, such as m...

AI Technical Summary

Problems solved by technology

Obviously relying on the single garbage disposal method mentioned above cannot effectively, thoroughly and harmlessly solve the problem of garbage siege