A kind of anaerobic digestion treatment method of kitchen waste

Abstract

The invention provides an anaerobic digestion treatment method for kitchen waste, which belongs to the technical field of kitchen waste treatment. It solves the problems that resources are wasted to a certain extent in the existing garbage disposal methods, which are not environmentally friendly, and there are still many disadvantages in aerobic composting and anaerobic digestion. The present invention comprises the following steps: ①, pretreat the kitchen waste, and separate oil and water-solid mixed liquid; ②, send the water-solid mixed liquid into a homogeneous pool and mix thoroughly; ③, send the thoroughly mixed water-solid mixed liquid into Anaerobic digestion is carried out in the anaerobic fermentation device, and anaerobic digestion produces biogas, biogas residue and biogas slurry; ④, the generated biogas residue is added to the aerobic composting device for thermal composting, and at the same time, the aerobic composting device is continuously filled with straw and / or nutrients such as garden waste. The invention has the advantages that the anaerobic digestion technology and the aerobic composting technology complement each other; the continuous feeding and the two-phase process of a single anaerobic tank are realized by adopting two-stage feeding cabins; and multiple kinds of garbage are processed simultaneously.

Description

technical field [0001] The invention belongs to the technical field of kitchen waste treatment, and relates to an anaerobic digestion treatment method for kitchen waste. Background technique [0002] The disposal of municipal solid waste is related to the sustainable development of our country, and has been paid more and more attention by people in recent years. As an important part of municipal solid waste, kitchen waste has high organic content and high recycling value. With the expansion of cities and the improvement of residents' living standards, a series of problems caused by food waste have become increasingly prominent. At the same time, the resourceful utilization and harmless treatment of kitchen waste has great market potential, and has received more and more attention from scholars at home and abroad. [0003] At present, domestic and foreign food waste treatment technologies can be divided into two categories: non-biological treatment and biological treatment ...

AI Technical Summary

Problems solved by technology

Landfill needs to occupy land, incineration will exacerbate smog, and abandonment will also cause fire hazards and endanger the environment

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