An anaerobic digestion device and anaerobic digestion method for kitchen waste

Abstract

The invention discloses an anaerobic digestion device for kitchen waste and an anaerobic digestion method thereof, belonging to the technical field of waste treatment. An anaerobic digestion device for kitchen waste comprises: a set of support mechanisms arranged at four corners of the bottom Anaerobic digestion box; the exhaust port set on the top of the anaerobic digestion box; the box door and solar heat collectors respectively set at the front and rear ends of the anaerobic digestion box; set between the left and right inner walls of the anaerobic digestion box The placing plate between them; the feeding mechanism set in the anaerobic digestion box is used to realize the stirring of food waste; multiple leaking holes are evenly opened on the top of the placing plate; the left inner wall of the anaerobic digestion box The inclined falling water plate has a gap between the inclined falling water plate and the right inner wall of the anaerobic digestion box; the present invention is based on the principle that a large amount of heat is emitted during the chemical reaction between water and sodium, thereby providing a good environment for its anaerobic fermentation At the same time, energy can be consumed step by step, which ensures the energy consumption of anaerobic fermentation.

Description

technical field [0001] The invention relates to the technical field of garbage treatment, in particular to an anaerobic digestion device for kitchen waste and an anaerobic digestion method thereof. Background technique [0002] Food waste refers to food waste, catering leftovers, food processing waste and non-edible animal and vegetable oils and various oil-water mixtures from families, schools, institutions, public canteens and catering industries. It is a part of urban domestic waste. Kitchen waste treatment methods are mainly landfill and incineration together with domestic waste. Landfill treatment will reduce the service life of landfills. As for incineration treatment, only a few developed cities such as Shenzhen have adopted garbage disposal methods. Incineration technology, and the harmful gases such as dioxins, nitrogen oxides, sulfur dioxide, dust, and waste water produced by incineration have not been effectively controlled. In order to achieve sustainable develop...

AI Technical Summary

Problems solved by technology

When anaerobic digestion of food waste is carried out, through the alternate operation of submerged anaerobic digestion and leaching reaction, the solid phase residue and liquid phase waste liquid of food waste can be fully anaerobic digestion reaction, with the maximum The degree of food waste can be treated and the maximum resource treatment can be achieved.” Although the above-mentioned patent realizes anaerobic digestion through the alternate operation of submerged anaerobic digestion and leaching reaction, the time required for anaerobic digestion If it is too long, the influence of temperature in anaerobic digestion is particularly important. With the increase of temperature, the efficiency of anaerobic digestion can be improved to a certain extent. Most of the existing technologies provide suitable temperature by direct heating. This method consumes more electric energy. In the process of anaerobic digestion, organic waste liquid is usually produced. How to use organic waste liquid to increase its internal temperature is a technical problem that we need to solve

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