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Kitchen waste processing method

A technology of kitchen waste and treatment method, which is applied in waste treatment, bulk chemical production, waste fuel and other directions, can solve the problems of secondary pollution of intermediate products and low product yield, and achieves high yield and avoids secondary pollution. Sub-polluted environment, beneficial to environmental protection

Active Publication Date: 2013-04-24
北京时代桃源环境科技股份有限公司
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AI Technical Summary

Problems solved by technology

[0005] The existing kitchen waste treatment technology mainly uses chemical and biotechnology to produce industrial oil and combustible gas from kitchen waste, but there are generally problems such as low product output rate and secondary pollution to the environment caused by intermediate products produced during the treatment process.

Method used

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] In the kitchen waste treatment method of the present invention, the specific operation steps are as follows:

[0036] 1) At the restaurant, the food waste is separated from the easily crushed substances through a pulper to obtain a waste slurry;

[0037] 2) The garbage slurry is transported to the feed tank by a pump suction tanker, and the garbage slurry is input for fermentation; before the garbage slurry is input into the feed tank for fermentation, the garbage slurry can be hydrolyzed and acidified;

[0038] 3) The fermented garbage slurry is treated with CO in the extraction tank 2 Oil is extracted by supercritical method, and non-oil substances enter the fermentation system for anaerobic fermentation to produce biogas; the extracted oil is used to prepare biodiesel.

[0039] 4) The biogas obtained above is separated and...

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Abstract

The invention relates to the field of kitchen waste processing, in particular to a kitchen waste processing method which comprises the following steps that: 1) materials easy to smash in kitchen waste is separated through a pulping machine in a restaurant, and waste grout is prepared; 2) the waste grout is inputted into a feeding tank through a pumping tank truck to be fermented; 3) the fermented waste grout is extracted to obtain oil through a CO2 supercritical method in an extraction tank, and non oil materials enter into a fermentation system to carry out anaerobic fermentation to obtain biogas; and 4) methane and CO2 are obtained through separation and purification from the biogas through a gas separation device. According to the kitchen waste processing method, the yield of the oil and the gases is high, intermediate products produced in the processing process can be recycled, biogas residues obtained through the separation can be used for making fertilizers, obtained products of the kitchen waste processing is prevented from causing secondary environment pollution, and environment protection is benefited.

Description

technical field [0001] The invention relates to the field of kitchen waste treatment, in particular, the invention relates to a kitchen waste treatment method. Background technique [0002] Food waste refers to food waste and food residues in families, schools, public canteens of government agencies and the catering industry. It is the main component of municipal solid waste. It has the characteristics of high content and rich nutrient elements, and has great recycling value. [0003] Previously, food waste was mainly used as feed for pigs in the suburbs of cities. Due to its complicated sources, it is very likely to cause disease transmission, and it has been banned by the government for feeding. In daily life, residents usually mix kitchen waste with domestic waste and send it to garbage collection points through plastic bags, which changes the composition and characteristics of urban domestic waste. During the storage, collection, transfer and landfill process of food w...

Claims

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Application Information

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IPC IPC(8): B09B3/00B09B5/00C12P5/02
CPCY02E50/30Y02P20/54Y02W30/20
Inventor 宋燕民杨军华宁显锋
Owner 北京时代桃源环境科技股份有限公司
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