Household garbage processing method adopting aerobic-anaerobic two-phase combined-type biological landfill treatment

Abstract

A household garbage processing method adopting an aerobic-anaerobic two-phase combined-type biological landfill treatment is disclosed. In the provided method, the easily-degradable components in household garbage are subjected to a one-year aerobic degradation period, the air is introduced into the whole landfill body by the air supply pipelines which are embedded in different layers of the landfill body so as to promote the degradation of the easily-degradable garbage; after the aerobic degradation period, until the garbage is completely stable, the anaerobic fermentation period starts, the landfill body is insulated from the air, the air supply pump is disassembled, and the tail ends of the air supply pipelines are connected to a biological gas collecting device, which is used to collect CH4 generated by anaerobic bacteria. The provided method has the advantages that two stages namely aerobic air supplement and anaerobic biological gas collection can be performed in the same pipeline system; solved is the problem that the conversion from the aerobic fermentation to anaerobic fermentation is difficult; the pipeline waste is avoided; the landfill period is short, the environment pollution is little, the greenhouse effect is low, and the construction cost is low.

Description

technical field [0001] The invention belongs to the field of solid waste recycling, in particular to a method for treating domestic waste by adopting an aerobic-anaerobic two-stage composite biological landfill. Background technique [0002] With the improvement of people's living standards, the output of domestic garbage is increasing day by day, and the components of garbage are becoming more and more complex. At present, many cities in our country have been surrounded by garbage, and the disposal of garbage has become an urgent environmental problem. Landfill is still the main treatment method of domestic waste at present and in the future. The "Technical Guidelines for Domestic Garbage Treatment" jointly issued by the Ministry of Urban Construction, the Development and Reform Commission, and the Ministry of Environmental Protection clearly pointed out that the landfill method (referring to the traditional anaerobic landfill method) occupies more land, and the leachate t...

AI Technical Summary

Problems solved by technology

The disadvantage is that the leachate and landfill gas (LG) released during the anaerobic landfill process contain a large amount of organic carbon pollutants, ammonia nitrogen and nitrogen oxides, etc.

[0009] Therefore, it is necessary to develop a process that can take advantage of both aerobic and anaerobic fermentation methods at the same time. After the rapid stabilization of easily degradable organic matter in the aerobic fermentation stage, the composite process of anaerobic treatment of the remaining refractory matter can be simultaneously Solve the problems of heavy pollution, high greenhouse effect and long stabilization period of traditional anaerobic landfill, high operating cost of aerobic landfill, difficult management and maintenance, etc.

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