Rubbish comprehensive processing method adapted for village and small town

Abstract

The invention discloses a garbage comprehensive treatment method for village, which comprises the following steps: sorting life garbage of village to perishable element, combustible constituent, reclaiming element; inorganic element; allocating the perishable element, residues of crop, animal and poultry manure and water with mass ratio at 0. 8-1. 2:0. 8-1. 2:8; proceeding anaerobic fermentation under the insulation action of burning lose heat; generating marsh gas; burning the combustible constituent with combustion-supporting marsh gas completely; getting high temperature smoke gas; recovering thermal energy through the first and second heat exchanger; maintaining the temperature of marsh gas fermenting tank; obtaining resource utilization of marsh liquid or slag, marsh gas and reclaiming component; health-filling the inorganic element and burning ash slag. This invention can prevent twice pollution of the burning smoke gas, which can increase the efficiency and output of mash gas.

Description

technical field [0001] The invention relates to a garbage comprehensive treatment method suitable for villages and towns. Background technique [0002] Village and town garbage mainly includes three categories: livestock manure, household garbage and crop residues. According to statistics, in 2005, the annual output of village and town household garbage nationwide reached 120 million tons, and the annual output of livestock and poultry breeding waste exceeded 2 billion tons. At present, domestic garbage in villages and towns is mainly disposed of by direct dumping or open-air landfill, and the phenomenon of garbage encroaching on land and farmland and surrounding villages by garbage is serious. However, crop residues and plastics are mostly burned directly in the open air, and the smoke and other substances are extremely polluting to the environment. Therefore, the villages and towns in our country are generally dirty, chaotic and poor, which seriously affects the process o...

AI Technical Summary

Problems solved by technology

This method effectively solves the harmless and recyclable problems of municipal solid waste, but it still has the following disadvantages when it is used to deal with more complicated village and town garbage: 1) The calorific value of village and town garbage is low, and a large amount of fuel oil or combustion-supporting gas is required for incineration, and the treatment cost High; 2) Domestic garbage perishables, crop residues, livestock and poultry manure, etc. in village and town garbage are rich in organic matter. Drying alone cannot guarantee the quality of fertilizers, and direct incineration after drying is not conducive to resource utilization.

However, this method requires high operating temperature, which is difficult to achieve in villages and towns, especially in winter when the weather is cold, microbial activity is inhibited, and anaerobic fermentation is difficult to achieve the desired effect

[0006] Therefore, there is still a lack of comprehensive treatment and disposal methods that are suitable for the environment of villages and towns and meet the characteristics of various types and complex properties of village and town garbage.

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