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Method for in-situ anaerobic digestion treatment of kitchen garbage

A technology of kitchen waste and anaerobic digestion, applied in the direction of solid waste removal, etc., can solve the problems of environmental sanitation and personal health hazards, high organic matter and moisture content, achieve great economic value, save energy, and improve heat transfer efficiency. Effect

Inactive Publication Date: 2012-05-30
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organic matter and water content in kitchen waste are high, if it is not properly disposed of, it will cause serious harm to the surrounding environmental sanitation and human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Below in conjunction with embodiment describe in detail:

[0029] 1. The above-mentioned food waste collection and sorting is to manually collect the food waste from restaurants and canteens, and pick out plastic bags, packaging boxes, broken bowls, cups and other sundries during the collection process; then send them to the magnetic separation device for separation Pick out metal foreign objects.

[0030] 2. The pulverization process is to send the material obtained in step ① into a hammer-type sieveless pulverizer for pulverization. Through the action of the crusher hammer, it can not only crush sticky soft food, vegetables and fibrous materials in kitchen waste, but also crush hard bone materials.

[0031] 3. The slurry mixing treatment is to pump the crushed slurry into the slurry mixing tank through the sludge pump to adjust the water content and pH; when adjusting the water for the first time, the swill water can be used as the water for adjustment, and the anaer...

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Abstract

The invention discloses a method for the in-situ anaerobic digestion treatment of kitchen garbage, which relates to a kitchen garbage treatment technology. The anaerobic digestion treatment of the kitchen garbage after collection, sorting and pulverization is carried out to acquire marsh gas and digested residues capable of being used for restaurants, and residues are then separated and dried through a centrifuge to acquire available feed. The sludge in a plant anaerobic digestion cell is used as a substrate of an inoculant, and the kitchen garbage is used for domestication, thereby effectively utilizing the microbial flora in the substrate; meanwhile, the habit of the inoculant and the character of the kitchen garbage can be matched through domestication, thereby being beneficial to quickly starting a digester. The method is suitable for the in-situ treatment of the kitchen garbage in community centers of various large and medium restaurants, schools, hospitals and the like.

Description

technical field [0001] The invention relates to a kitchen waste treatment technology, in particular to an on-site anaerobic digestion treatment method for kitchen waste. Background technique [0002] With the development of social economy and the improvement of people's living standards, the proportion of kitchen waste in municipal solid waste is increasing. Food waste has a high content of organic matter and water, and if it is not properly disposed of, it will cause serious harm to the surrounding environmental sanitation and human health. [0003] At present, the centralized treatment technologies of food waste practically applied at home and abroad mainly include landfill, incineration, composting, crushing, feed and anaerobic digestion treatment technologies. Compared with other technologies, anaerobic digestion treatment technology has the advantages of reducing the amount of treatment, recovering clean energy, and using residues to prepare feed and organic compound f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00
Inventor 袁巧霞王延昌樊启洲
Owner HUAZHONG AGRI UNIV
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