Garbage biogas processing system

Abstract

The invention discloses a garbage biogas processing system. The system comprises a garbage dehydrating facility, which carries out spinning drying and air drying on garbage; a garbage sorting facility, which separates organic matters from the dehydrated garbage; and an anaerobic fermentation facility, which comprises a grinding device and an anaerobic fermentation tank, grinds the separated organic matters, and fully degrades the organic matters to generate biogas through controlling the temperature and stirring. The garbage sorting facility comprises a first grade sorting device and a second grade sorting device; wherein the first grade sorting device is used to separate ores from the dehydrated garbage and collect the ironware, and the second grade sorting device is arranged after the first grade sorting device, is used to separate organic matters from the dehydrated garbage and comprises an inclined plate-chain conveyor and heavy substance collecting tanks arranged on two sides of the upper end of the plate-chain conveyor.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a garbage methane treatment system. Background technique [0002] At present, my country's urban domestic waste is increasing at a rate of 10% every year, and the urban waste that implements simple treatment only accounts for 2.3% of the total. 8 billion yuan. The number of cities across the country has grown to 660, and 200 of them have been surrounded by garbage. Based on an urban population of 260 million and each person producing 440 kg of waste per year, the amount of waste generated is 114 million tons, which can cover a city with a population of 1 million by 1 meter. And it is still increasing at a rate of 8-10% every year. China has become the country with the heaviest burden of garbage in the world, and the harmless, volume reduction and recycling of urban garbage is imminent. [0003] At present, domestic garbage collection methods are all mixed coll...

AI Technical Summary

Problems solved by technology

[0004] 1. Mixed and received ingredients are complicated, and the content of bags is high;

[0005] 2. High water content, the average water content is 50%, and the limit water content is as high as 70%;

[0006] 3. The content of kitchen waste and muck is high, and it is difficult to separate and dehydrate;

[0007] 4. The content of perishable substances is high, and improper handling will cause serious secondary pollution

[0011] 1. The operating environment is harsh and the secondary pollution is serious: the method of draining water and fermentation and evaporation is used to remove water, which has a long cycle, a large amount of malodorous gas emissions, a large amount of landfill leachate, and high COD and BOD content in the leachate. Treatment costs are high ;

[0012] 2. Affected by the change of garbage moisture, the performance of fermentation products is extremely unstable

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