Mechanical pretreatment system and process for municipal domestic waste comprehensive treatment

Abstract

The invention discloses a mechanical pretreatment system for municipal domestic waste comprehensive treatment (marsh production). The system comprises a coarse crushing unit, a vertical shaft hammer type grinding unit and a dry-wet component extrusion and separation unit which are arranged in sequence. The units are sequentially connected through a conveying machine. The invention further discloses a mechanical pretreatment process for municipal domestic waste comprehensive treatment adopting the mechanical pretreatment system. The process comprises the process steps of coarse crushing, vertical shaft hammer type grinding and dry-wet component extrusion and separation. The technical defects that organic matter separation efficiency is low and the impurity content is high according to existing domestic waste comprehensive treatment mechanical pretreatment are overcome, the waste receiving adaptability is high, the equipment integration degree is high, continuous stable operation is achieved, various kinds of domestic waste with complex ingredients are used as raw materials, dry and wet components are produced to meet different follow-up technological requirements, coordinated treatment of various kinds of municipal domestic waste is achieved, and the system and the process are suitable for being applied and popularized.

Description

technical field [0001] The invention relates to the field of environmental sanitation, in particular to a mechanical pretreatment system and process for comprehensive treatment (biogas production) of municipal solid waste. Background technique [0002] The salient feature of my country's municipal solid waste is that kitchen waste components account for more than half, and the moisture content and organic matter content are extremely high. Direct landfill wastes resources, and direct incineration will use a large part of the heat to heat and evaporate the water in the waste. It is easy to produce harmful substances; in the reality that the implementation of front-end domestic waste classification still needs a long process, comprehensive treatment technology is the only way for my country's waste treatment. [0003] In the past two decades, relevant scientific researchers in my country have done a lot of introduction, absorption, exploration and improvement work on the compre...

AI Technical Summary

Problems solved by technology

[0008] This shows that the mechanical pretreatment system and technology of the above-mentioned existing municipal solid waste comprehensive treatment (biogas production) obviously still have inconvenience and defects, and need to be further improved urgently

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