A high-solids anaerobic digestion reaction device and its working method

Abstract

The invention relates to a high-solid anaerobic digestion reaction device and its working method, belonging to the field of high-concentration biomass anaerobic digestion. The device includes a reactor, an anaerobic digestion system, a sampling system, a water circulation system, a gas collection system and On-line monitoring and control system, a water storage area is set at the bottom of the reactor; the anaerobic digestion system includes a porous backing plate and a stirring device located above the porous backing plate; the water circulation system includes a water intake and a water inlet, and the water circulation pipeline is equipped with a peristaltic Pump; the on-line monitoring and regulation system includes a PLC controller, an on-line monitor and a backup pipeline for regulation, and a stirring device, a peristaltic pump and an on-line monitor are all connected to the PLC controller. The invention effectively solves the problems of heterogeneity that may occur in the reaction process, uneven contact between anaerobic microorganisms and substrates, and local accumulation of VFAs. At the same time, by monitoring the indicators of the reaction process, the anaerobic digestion process is regulated in time to effectively improve the yield of organic waste. Treatment efficiency and biogas yield.

Description

technical field [0001] The invention relates to a high-solid anaerobic digestion reaction device and a working method thereof, belonging to the technical field of high-concentration biomass anaerobic digestion. Background technique [0002] Under the situation of rapid social development, various types of organic wastes have caused great harm to human health and the environment. In the context of the depletion of social resources and the shortage of fossil fuels, the energy conversion of organic solid waste resources has become an inevitable development in the future. As an energy recovery technology that can stabilize organic waste such as agricultural and animal husbandry waste, kitchen waste, and urban sludge, anaerobic digestion is gradually receiving attention among the more mature solid waste reduction technologies. [0003] At present, the anaerobic digestion process is divided into wet and dry anaerobic digestion. In the anaerobic digestion process, when the total ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a high-solids anaerobic digestion reaction device and its working method, which not only has the advantages of traditional dry anaerobic digestion, but also effectively solves the heterogeneity, anaerobic The problem of uneven contact between aerobic microorganisms and substrates and the accumulation of local VFAs. At the same time, by monitoring the basic indicators of the reaction process, the anaerobic digestion process can be regulated in time to effectively improve the treatment efficiency and biogas yield of organic solid waste.

Images