Baffling anaerobic reactor and sewage treatment unit applying the same

Abstract

The invention relates to a baffling anaerobic reactor, comprising two or more sets of multistage baffling anaerobic reaction tanks, wherein each set of the multistage baffling anaerobic reaction tanks further comprises a sedimentation tank and a sludge return pipe to allow a mixed solution coming from the last stage of the set to enter into the sedimentation tank to separate a supernatant and a concentrated mixed solution, allow the supernatant to enter into the first stage of the next set, and allow the concentrated mixed solution to enter into the first stage of the set through the sludge return pipe. The invention further relates to a sewage treatment unit containing the baffling anaerobic reactor and a sewage treatment method using the baffling anaerobic reactor.

Description

technical field [0001] The invention relates to a baffle anaerobic reactor and a sewage treatment device using the reactor, in particular to a sewage treatment device suitable for aquaculture wastewater. Background technique [0002] Anaerobic biological treatment, also known as anaerobic digestion, is that a variety of microorganisms work together under anaerobic conditions to make organic matter generate CH 4 , CO 2 the process of. [0003] Before the 1960s, people believed that the digestion process was divided into two stages. The first stage was called the fermentation stage or the acid production stage. In this stage, the insoluble complex organic matter was first hydrolyzed by anaerobic microorganisms, and then transformed into simple organic matter, such as fatty acids, alcohols, carbon dioxide and hydrogen, etc., the microorganisms that act in this stage are called fermentation bacteria or acid-producing bacteria, and the second stage is called the formazan stage....

AI Technical Summary

Problems solved by technology

[0008] However, high-concentration sewage feed often causes problems such as slowing down of the supernatant filtration rate, lower COD removal rate, higher volatile acid concentration, and sludge swelling and floating in the first and second chambers of the ABR (especially the first chamber) , thus affecting the normal operation of the ABR, limiting the further increase of the sludge concentration

At the same time, in order to maintain the upflow sludge bed system, the flow rate of the mixed liquid in each chamber is also subject to certain restrictions.

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