Non-mechanical-stirring sludge treatment anaerobic reactor and method for material circulation in reactor

Abstract

The invention brings forward a non-mechanical-stirring sludge treatment anaerobic reactor, which comprises a fermentation tank body and a feeding and discharging system. The feeding and discharging system comprises a main feed pipe and a discharge pipe which is communicated with the bottom of the tank body. The top of the tank body is provided with a feed inlet. A discharge end of the main feed pipe is communicated with the feed inlet. The feeding and discharging system also comprises a first feeding pump, which is used for pumping external materials into the tank body through the main feed pipe. A material circulation system comprises a material absorption header-pipe arranged at the lower middle part inside the tank body, and an auxiliary feed pipe which is arranged outside the tank body and is communicated with the main feed pipe. A discharge end of the material absorption header-pipe is communicated with the auxiliary feed pipe through a second feeding pump. The domestic sludge treatment technology is based on the non-mechanical-stirring anaerobic reactor. According to the technology, the anaerobic reactor adopts the mode of feeding at upper part and circulating at middle part to form an internal circulating fluid system of the material. Thus, problems such as nonuniform distribution, crusting at top of the tank, etc. are solved. The invention also brings forward a method for material circulation in the anaerobic reactor. According to the invention, anaerobic fermentation treatment of domestic sludge is mainly solved.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a non-mechanical stirring sludge treatment method for anaerobic reactor and material circulation in the reactor, and anaerobic fermentation treatment for domestic sludge. Background technique [0002] During the development of biogas industrialization, a variety of anaerobic reactor technologies have been popularized and used, such as: setting mechanical stirring devices in anaerobic reaction tanks, horizontal anaerobic reactors, downflow anaerobic filters and upflow anaerobic reactors. Anaerobic reaction tanks, adding circulation pipes in anaerobic reactors, etc. However, the above technologies cannot take into account the biogas raw material circulation, raw material adaptability, biogas output rate and energy consumption at the same time. There are still insufficient biogas reaction raw material circulation and stirring, single raw material, small volume, ...

AI Technical Summary

Problems solved by technology

However, the above technologies cannot take into account the biogas raw material circulation, raw material adaptability, biogas output rate and energy consumption at the same time. There are still insufficient biogas reaction raw material circulation and stirring, single raw material, small volume, high failure rate, and difficult maintenance. , one or more disadvantages of low biogas volumetric yield and high energy consumption

Due to the limitation of material characteristics, many high-efficiency anaerobic reactors in China are difficult to be effectively applied and cannot achieve good results. Traditional anaerobic reactors have not really met the requirements of biogas industrial production.

However, there are few studies on sludge anaerobic reactor at home and abroad, and the research on sludge anaerobic fermentation to biogas needs to be solved urgently.

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