Method for producing biogas from kitchen wastes by anaerobic fermentation

A technology of food waste and anaerobic fermentation, which is applied in the direction of fermentation, biosynthesis, fat production, etc., can solve the problems of the influence of fermentation production biogas and the different components of food waste, and achieve good COD removal effect, long residence time, and water effluent stable effect

Active Publication Date: 2012-07-18
江苏马盛生物科技股份有限公司
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AI Technical Summary

Problems solved by technology

However, due to the different types of food in different regions and units, the composition of food waste is very different, which will have a certain impact on the production of biogas by fermentation

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0022] The feed pool is preferably steel structure, design parameters: D×H=5m×4.5m, feed pump: power 9.2kw, voltage 380V, head 30m, flow 50m 3 / h, set up a mixer: motor power 4kw, output speed 34rpm.

[0023] The temperature of the primary anaerobic fermentation tank is controlled at 30-60° C., and the pH is 7-8. Design parameters: two anaerobic tanks, steel structure, each size is D×H=15m×20m, bottom feeding is adopted, 9 distribution pipes are evenly distributed, 3 biogas stirring pipes are distributed at the bottom of the tank, which can be ventilated and stirred, and the bottom is set There are two mixers with a motor power of 11kw, a voltage of 380V, and 460r / rpm. There are connecting pipes at 6m and 12m of the tank to communicate with the secondary anaerobic fermentation tank. Sampling pipes are installed at 1m, 6m, and 12m, and a Liquid level gauge, thermometer, the operation mode is continuous operation.

[0024] Before the actual operation, the sludge should be inoc...

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Abstract

A method for producing biogas from kitchen wastes by anaerobic fermentation adopts two-stage anaerobic reaction to ferment kitchen wastes of various sources into biogas, effectively disposes kitchen wastes, and realizes harmless resource utilization of wastes. Multi-component combination process is adopted to realize staged and stepped disposal of kitchen wastes, stable system operation, good COD removal effect, high energy recovery rate, and good disposal effect under situation of complex material sources.

Description

technical field [0001] The invention discloses a method for producing biogas by anaerobic fermentation of kitchen waste, which belongs to the technical field of waste resource treatment. Background technique [0002] Kitchen waste occupies a dominant position in municipal solid waste and is an important part of solid waste. With the continuous improvement of people's living standards, the amount of kitchen waste generated is increasing day by day. The daily output of kitchen waste in my country has exceeded 20,000 tons. Food waste itself has the characteristics of high water content, poor dehydration performance, high temperature and perishability, and easy breeding of mosquitoes and germs. If it is not disposed of properly, it will cause serious environmental pollution and eventually pose a major threat to people's health. How to deal with it timely and effectively has been paid more and more attention by people. [0003] There are certain problems in the existing disposa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02C11B13/00
CPCY02E50/343Y02E50/30Y02P20/59Y02W30/74
Inventor 阮文权赵明星廖家林
Owner 江苏马盛生物科技股份有限公司
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