Urban household garbage sorting and charring comprehensive treatment resource recovery method

Abstract

A urban household garbage sorting and charring comprehensive treatment resource recovery method comprises the first step of garbage sorting treatment, wherein original household garbage is subjected to uniform feeding, manual large garbage sorting, coarse crushing, plate-frame pressure filtering, rolling cylinder screening, full-closed mechanical selecting by winnowing, plate-type magnetic separator treating, eddy current magnetic separator treating and fine crushing process treatment; the second step of garbage drying treatment; the third step of garbage charring treatment, wherein a rotary charring furnace is adopted, and garbage charring is carried out in a normal-pressure low-temperature and low-oxygen atmosphere so that solid carbon can be prepared; the fourth step of coke forming and cooling treatment; the fifth step of bad smell purifying treatment, wherein bad smell generated in a household garbage discharging warehouse and bad smell generated in all treatment process links are collected to a bad smell purifying system through a negative pressure induced draught system; and the sixth step of waste water purifying treatment. The urban household garbage sorting and charring comprehensive treatment resource recovery method is relatively high in automation degree, sorting efficiency and recovery utilization rate and has more sorting functions.

Description

technical field [0001] The invention belongs to the technical field of urban solid waste resource treatment, and in particular relates to a resource recovery method for comprehensive treatment of municipal solid waste sorting and carbonization. Background technique [0002] The annual output of urban waste in my country is close to 200 million tons, and the average annual waste generation per person is about 300kg, ranking third in the world after the United States and Russia, and has basically been growing at an annual rate of 8%-10% in recent years. How to dispose of these increasingly large quantities of domestic waste, which is continuously produced, has become a serious social and environmental problem. [0003] my country's municipal solid waste treatment technologies are mainly sanitary landfill, incineration and composting. Sanitary landfill is the earliest and most widely used final disposal method. The advantage of the sanitary landfill treatment method is low in...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the existing municipal solid waste treatment methods, such as low degree of automation, few sorting functions, low sorting efficiency, and low recycling rate, the present invention provides a high degree of automation and more efficient sorting functions A resource recovery method for municipal solid waste sorting and carbonization comprehensive treatment with higher refinement, sorting and recovery efficiency

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