Comprehensive treating system for domestic wastes

Abstract

The invention discloses a comprehensive treating system for domestic wastes. Reutilizing comprehensive treatment for mixed wastes is realized by the system according to a comprehensive sorting technology and a combined anaerobic fermentation technology, wherein the advanced sorting techniques, such as, crushing, magnetic separating, sieving, air classifying, and the like, are adopted in the comprehensive sorting technology; reutilized products, such as metal, plastics, organic matters, and the like, are screened out; the screened organic matters are prepared into slurry together with sludge and excrements and are then subjected to the combined anaerobic fermentation; the reutilized products, such as methane, organic fertilizer, and the like, can be produced under the action of anaerobic fermentation; and after the methane is purified, the methane is used for generating power, domestic fuel or vehicle-mounted fuel. According to the technology, the intensified treatment for organic wastes, such as domestic wastes, sludge, excrements, kitchen wastes, and the like, can be realized. The comprehensive treating system is high in mechanical and automated degree. Compared with the prior art, the comprehensive treating system has the advantages of simplification, effectiveness, less labor power, and the like.

Description

technical field [0001] The patent of the invention relates to the technical fields of environmental protection, garbage disposal, waste recycling and the like, and specifically relates to a domestic waste comprehensive treatment process system. Background technique [0002] Domestic waste includes domestic waste, kitchen waste, kitchen waste, sludge and feces and other wastes generated by residents' daily life. In recent years, with the continuous development of my country's national economy and the improvement of people's living standards, coupled with the Many, the output of municipal solid waste also increased sharply. my country has not generally implemented garbage classification and collection, and the garbage components are complex, so not only the amount of garbage to be processed is large, but also the processing is very difficult. [0003] At present, landfill, composting and incineration are still the main methods of urban waste disposal in my country. More than...

AI Technical Summary

Problems solved by technology

More than 70% of domestic garbage is disposed of in landfills. Landfills occupy a large amount of land resources, and the landfill capacity is limited, and most of them are saturated. At the same time, the landfill gas and leachate produced have caused great pollution to the surrounding environment. , the landfill disposal method will gradually withdraw from the waste disposal market

Garbage incineration accounts for about 20%. Garbage incineration is difficult to meet the temperature due to the high moisture content of the garbage. At the same time, it produces harmful gases such as dioxins, which endanger the health of surrounding residents and pollute the atmosphere.

Garbage composting accounts for about 10% of the waste treatment market. Composting takes up a lot of land resources. The odor generated during the composting process is difficult to deal with. The fertilizer produced by composting has many impurities in it, which makes the quality of the fertilizer poor and the fertilizer efficiency is not good. Obviously, it leads to poor sales of products, so the development of composting treatment is greatly restricted

The above traditional garbage disposal methods are difficult to meet the requirements of waste recycling, reduction and harmless treatment

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