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Reutilization treatment method of kitchen waste

A technology of food waste and treatment method, which is applied in the treatment of food waste anaerobic digestion to produce biogas, and in the field of food waste resource treatment, achieving the effects of high resource utilization, increased biogas yield, and reduced fermentation time

Inactive Publication Date: 2012-06-20
北京世纪银河环境科技有限公司
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Problems solved by technology

The entire pre-sorting process material is conveyed by a closed screw

Method used

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  • Reutilization treatment method of kitchen waste

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Embodiment Construction

[0022] The following examples can enable those skilled in the art to understand the present invention more comprehensively, but do not limit the present invention in any way.

[0023] The food waste resource treatment method mainly includes the following process steps:

[0024] (1) Pre-sorting: The collected food waste is firstly separated into solid and liquid, and the material is divided into solid part and liquid part, and the solid part is sorted to remove metal, large pieces of plastic, bones, bottles, Impurities such as tableware enter the crushing and sorting equipment, which is used to crush large materials to a particle size of about 50mm, and at the same time screen out some light materials such as plastic sheets and rags. The liquid part of the solid-liquid separation enters the oil-water separation system.

[0025] (2) Hydraulic pulping: the crushed kitchen waste is subjected to hydraulic pulping, and the material is made into a uniform slurry with a solid content...

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Abstract

The invention discloses a reutilization treatment method of kitchen waste, belonging to the technical field of rubbish treatment; the kitchen waste is treated by such procedures as pre-sorting, hydraulic pulping, anaerobic fermentation, organic fertilizer preparation by residues and oil-water separation, and the like, so that the grease in the kitchen waste is recycled, the organic matters are prepared to marsh gas by hydrolytic acidification and anaerobic fermentation, and the marsh gas is purified to be used as fuel, power generation or automobile fuel gas; in the whole treatment process, the liquid part in the kitchen waste except the removed grease is used for pulping in a pulp homogenizing system, all pulp participate in the anaerobic fermentation process, and the fermented biogas slurry is after-treated to prepare nutrient solution so as to realize the recycle of resources and zero release of pollutants; the treatment process is completely sealed, and the collected off-flavor is collected and treated by a deodorization system to be exhausted after reaching to the discharge standard. The method of the invention has the advantages of maximally recycling the resources, recycling the kitchen waste, guaranteeing non-pollutant discharge during the whole treatment process, and realizing the efficiency, reclamation and harmlessness of kitchen waste treatment.

Description

technical field [0001] The invention belongs to the technical field of garbage treatment, and in particular relates to a resource-based treatment method for kitchen garbage, in particular to a treatment method for anaerobic digestion of kitchen garbage to produce biogas. Background technique [0002] Food waste refers to food waste generated by catering units and households in their daily business and life processes, and is one of the main components of urban organic waste. Its composition is complex, including edible oil, vegetables, fruit peels, fruit stones, rice noodles, meat, bones, etc. In addition, it also includes some sundries such as a small amount of waste tableware, food packaging, wine bottles, bones, etc. Food waste is mainly composed of organic substances such as starch, dietary fiber, protein, and lipid, and also contains inorganic salts. Easily biodegradable and so on. [0003] With the increase in population and the improvement of residents' living standa...

Claims

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Application Information

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IPC IPC(8): C05F5/00C12M1/107C11B13/00
CPCY02E50/343C12M45/04C12M47/10C12M21/04C12M47/04Y02E50/30Y02P20/133Y02W30/40
Inventor 吴长亮
Owner 北京世纪银河环境科技有限公司
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