Municipal garbage wet type process treatment method

A technology of municipal solid waste and a treatment method, which is applied in the field of municipal solid waste wet treatment technology, and can solve the problem of low comprehensive utilization rate of waste resources.

Active Publication Date: 2020-10-23
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The above-mentioned two documents are all involved in the "dry" process of waste treatment, a

Method used

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  • Municipal garbage wet type process treatment method

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Embodiment Construction

[0035] figure 1 Shown, a wet process treatment method for municipal solid waste is carried out according to the following steps:

[0036] Step 1), crushing, washing and separation

[0037] After the garbage arrives, it is input to the crusher 1. After being crushed, it is sent to the washing pool 2. There is circulating water in the pool. The water circulation method is continuous in and out, or sequence batch in and out. Adjustable; control the flow state of the water in the washing tank 2, so that the garbage can be fully turned and washed in the water, and the soluble pollutants carried by the garbage enter the liquid phase in a dissolved state and fine particles in a suspended state;

[0038] Light solids and insoluble macromolecules are salvaged out of the water as floating objects;

[0039] Step 2), the sediment is crushed, cleaned, and ground

[0040] The components with larger specific gravity settle to the bottom of the washing tank, are collected in the sorter, cr...

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Abstract

The invention provides a municipal garbage wet type process treatment method. According to the method, garbage is crushed and then conveyed to a washing tank to be washed; sediment is sent to a sorting machine to be crushed and washed to separate out inorganic residues; garbage washing liquid and floating substances on the washing tank are both conveyed into a grinding machine; ground materials are washed and sieved; an oversize product is dried and fed into a mixer, and an undersize product is sent into a mixing and conditioning tank; when the water quality and temperature meet the requirements, the mixture in the mixing and conditioning tank is fed into an anaerobic digestion tank to generate biogas, biogas fluid and biogas residues; the biogas residues are dewatered and dried and are conveyed into a pyrolysis drum together with the dried oversize product; and thermal cracked fuel gas of which tar is removed and the biogas are both fed into a fuel gas collection and utilization system. Through the municipal garbage wet type process treatment method, harmless, quantity reducing and recycling treatment of garbage is realized, and the recycling comprehensive utilization rate of thegarbage is increased.

Description

technical field [0001] The invention relates to a waste treatment technology, in particular to a wet treatment process of municipal solid waste. Background technique [0002] At present, there are three main ways to deal with domestic waste in countries around the world: landfill, incineration and composting. Landfill treatment takes up a lot of land, emits greenhouse gases, and discharges leachate for a long time. Its treatment is also a problem. If it is not handled properly, it will pollute surface water or groundwater. Although incineration is a thorough stabilization and harmless treatment, it requires It consumes a lot of primary energy, and emits dioxins and greenhouse gases. The operating cost is relatively high, and it generally requires incentive policies to operate; composting is limited to garbage that meets the relevant indicators. [0003] These three processes, which can be called "dry" or "semi-dry" processes, do not add water to the waste, but reduce the mo...

Claims

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Application Information

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IPC IPC(8): B09B3/00B09B5/00C12P5/02C10B53/00C10B57/10C10B57/00C10G1/00C05F9/02C05F9/04C05G5/20
CPCB09B3/00B09B5/00C12P5/023C10B53/00C10B57/10C10B57/00C10G1/00C05F9/02C05F9/04C05G5/20B09B3/40Y02W30/20Y02A40/20Y02E50/30Y02P20/59Y02P20/133
Inventor 杨顺生吴岳荣储承陈钰黄芸
Owner SOUTHWEST JIAOTONG UNIV
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