Domestic garbage compression-classification-comprehensive disposal-and-utilization system and device

Abstract

The invention discloses a garbage compression-classification-resource utilization system and device. The system and device have the advantages of stronger practicability, high automation degree, no secondary pollution and lower cost.

Description

[0001] Invention title [0002] Domestic garbage squeezing classification and comprehensive treatment and utilization system and device [0003] Application field [0004] This invention relates to the field of environmental protection and resource reuse, in particular to a domestic waste squeezing classification and comprehensive treatment and utilization system, including a waste squeezing and dewatering device, a waste-derived fuel production device, and a waste wet component semi-solid methane gas The fermentation device is characterized by a garbage squeezing dehydration device between the mechanical sorting device and the separation of the dry and wet components of the native domestic garbage. The separated wet components of the garbage enter the semi-solid biogas fermentation device to produce biogas, and the separated dry garbage group It is divided into waste-derived fuel production equipment into fuel utilization. Background technique [0005] In recent years, through the p...

AI Technical Summary

Problems solved by technology

The main problems of landfill treatment of primary waste are as follows: first, it consumes a lot of land resources, and it is difficult for many cities to find new sanitary landfills for domestic waste; second, landfill of primary domestic waste produces a large amount of leachate. Most of the landfills in China are polluted by leachate; the third is that the gas produced after the landfill of primary waste pollutes the atmosphere and poses safety hazards

At present, there are very few landfills that can make resourceful utilization of landfill gas, and the landfill gas in most landfills is still in a state of unorganized emission, which not only causes the greenhouse effect, leads to unsafe fire protection, but also produces main cause of bad smell

Fourth, most of the available resources are buried and cannot be recycled

The fifth is to build a completely standardized garbage harmless sanitary landfill, and the construction cost is also increasing

Although the primary domestic waste incineration power generation treatment has certain advantages in terms of waste reduction and heat energy utilization, there are still some problems in the development process: the primary mixed domestic waste has high moisture content and low calorific value, and direct incineration of primary waste is unreasonable. Difficult, the consequences are low treatment and resource utilization efficiency, high equipment investment, complex and difficult flue gas treatment technology; at the same time, when the original mixed domestic waste is directly incinerated, the water evaporates and absorbs a lot of heat after the waste enters the furnace, and the drying time Long, slow ignition, long burn-through time, large fluctuations in furnace temperature, unstable waste incineration, melting and sintering under high temperature conditions, easy to cause grate failure, high maintenance rate of domestic waste incinerators, affecting The effect of garbage treatment may even lead to the phenomenon that garbage accumulation cannot be processed in time; the investment and operation costs are high, and the average cost of household garbage treatment per meal exceeds 150 yuan; it depends on the high on-grid electricity price; dioxins, Fly ash and other pollution problems have become the focus of attention from all walks of life and so on

[0007] The use of domestic waste composting has been used for a long time in our country, but the effect has not been good. The outstanding problem is that due to the use of mixed collection of domestic waste as raw materials for production, it leads to high costs, low fertilizer efficiency, poor quality, and poor sales. , making it difficult for most businesses to maintain operations

[0008] Our country has carried out research and development and practice on the comprehensive treatment of mixed domestic waste for a long time, but it is limited to the comprehensive treatment of mixed primary waste in concept, focusing on recycling waste products from domestic waste and producing composting products or waste incineration for power generation , the domestic waste reduction and resource utilization rate is low, and there are great operational risks

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