Comprehensive treatment system of municipal domestic garbage

Abstract

The invention discloses a comprehensive treatment system of municipal domestic garbage. A garbage cracking unit comprises a feeding device and a cracking furnace, the cracking furnace is provided with a heating device, a post-treatment unit comprises a gas-solid separator, a condensing device, a combustible gas treatment device, a biomass oil storage device and a carbon powder collection and treatment device, the output end of a pretreatment unit is connected into the cracking furnace via the feeding device, the carbon powder output ends of the cracking furnace and the gas-solid separator are connected with the carbon powder collection and treatment device, the gas output end of the cracking furnace sequentially passes through the gas-solid separator and the condensing device and then is connected to the combustible gas treatment device, the output end of the combustible gas treatment device is connected with the heating device, the input end of the biomass oil storage device is connected with the condensing device, and the input end of a garbage leachate treatment unit is connected with the pretreatment unit. The comprehensive treatment system of the municipal domestic garbage can realize the reduction, recycling and harmless treatment of the municipal domestic garbage and has various advantages in comparison with an incineration treatment system, a landfill treatment system and a composting system.

Description

technical field [0001] The invention relates to a comprehensive municipal solid waste treatment system for reducing, recycling and harmless treatment of municipal solid waste. Background technique [0002] Where there are human beings engaged in production and living, there will be waste, and there will be environmental problems if there is waste. With the continuous development of human society, social productivity has increased rapidly, and the process of industrialization and urbanization has gradually accelerated. Today, many countries and regions around the world have entered a period of highly developed industrialization and urbanization. At the same time, the types and quantities of urban waste output are increasing rapidly, and the hazards of urban waste are gradually becoming prominent. [0003] my country currently has 668 cities with a population of more than 300,000. The annual output of domestic waste is about 150 million tons, and the output of various indus...

AI Technical Summary

Problems solved by technology

[0007] 1. The biggest problem with the sanitary landfill method is the difficulty of site selection, not all suburbs of cities can find suitable landfill sites

Even for countries that have been adopting the sanitary landfill method, it is becoming more and more difficult to find suitable landfill sites, and landfill sites far away from cities will increase more transportation costs

In addition, with the improvement of landfill disposal standards, the disposal cost of sanitary landfill method will become higher and higher, and many places will cause pollution due to substandard construction of landfill disposal.

[0008] 2. The incineration treatment reduces the volume more thoroughly and the treatment speed is faster, but the investment and operation costs of the incineration treatment are relatively large, and the environmental protection requirements are high

Often prone to secondary pollution

[0009] 3. Composting technology cannot deal with organic matter that is difficult to degrade, so volume reduction and volume reduction are not complete

Therefore, only relying on composting still cannot completely solve the garbage problem

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