Reaction system suitable for organic solid waste resource utilization

Abstract

The invention relates to a reaction system suitable for organic solid waste resource utilization and belongs to the field of solid waste anaerobic biological treatment. The problems that in the priorart, the reaction process is easy to acidify, and the fermentation efficiency and the gas producing efficiency are low can be solved. The reaction system suitable for organic solid waste resource utilization comprises a high-temperature hydrolysis fermentation reaction device, a medium-temperature acidification fermentation reaction device and a methane fermentation reaction device; a hydrolysis dominant bacterial community, an acid producing dominant bacterial community and a methane producing dominant bacterial community are formed in the three independent reaction devices respectively, andthe best conditions required by the growth of the communities respectively are provided, so that the fact that the reaction devices cannot operate normally caused by the acidification phenomenon can be avoided effectively. Each device injects biogas liquid into the next reaction device through a jet pump on a connecting pipe and through a water distribution device, so that the reaction devices canbe stirred completely, the contact area of reaction substrates and sludge is enlarged, the problems in mechanical stirring that failure is liable to occur and energy consumption is high are reduced,the biogas liquid circulating aim can be fulfilled, the organic solid waste can be fermented completely again, and biogas residues are reduced.

Description

technical field [0001] The invention relates to an anaerobic fermentation device for organic solid waste, belonging to the technical field of anaerobic biological treatment of solid waste. Background technique [0002] With the rapid development of social economy, the amount of solid waste is increasing day by day. How to reduce its quantity and recover resources and energy therefrom has become an urgent problem to be solved. [0003] Solid wastes such as agricultural waste, meal waste, distiller's grains, excess sludge and organic domestic waste contain a large amount of organic matter, which can be converted into energy, stable products and other useful substances by means of biological action, and at the same time realize the efficiency of solid waste treatment and disposal. Reduction, recycling and harmless, to achieve comprehensive recycling of resources. [0004] Compared with aerobic biological treatment technology, anaerobic biological treatment technology is more ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a reaction system suitable for resource utilization of organic solid waste, which solves the problems of easy "acidification" in the reaction process of the prior art, low fermentation efficiency and gas production efficiency, and can overcome the problems in the prior art at the same time. Mechanical agitation is prone to failure, energy consumption and difficulty in handling biogas residues, which is conducive to the stable operation of high load and high efficiency in the reaction system

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