Method for operating anaerobic ammonia oxidation by using microbial immobilized membrane bioreactor

Abstract

The invention discloses a method for operating anaerobic ammonia oxidation by using a microbial immobilized membrane bioreactor, which comprises an aeration tank, a primary sedimentation tank, a biological treatment tank and a secondary sedimentation tank, wastewater needing to be treated is input from the aeration tank, and treated water is output from the secondary sedimentation tank. The biological treatment tank comprises a first-stage bioreactor, a second-stage bioreactor and a third-stage bioreactor, the first-stage bioreactor, the second-stage bioreactor and the third-stage bioreactor are communicated with one another, and the input end of each bioreactor is communicated with the first-stage sedimentation tank. According to the method, the microorganism immobilization membrane is used for removing nitrogen, the microorganism immobilization membrane can be repeatedly used, no extra energy consumption is consumed, the stability performance is good, the biological reaction can be well carried out, and the three bioreactors can be used at the same time or separately; and a primary biological reaction liquid can be used for secondary biological reaction.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and in particular relates to a method for operating anaerobic ammonium oxidation using a microorganism immobilized membrane bioreactor. Background technique [0002] Biological denitrification refers to the process of organic nitrogen and ammonia nitrogen in sewage undergoing ammonification, nitrification, denitrification, and finally converted into nitrogen under the combined action of microorganisms. It is economical, effective, easy to operate, and has no secondary Pollution and other characteristics are recognized as a promising method, wherein anammox refers to the biological reaction process in which anammox bacteria use nitrite as an electron acceptor to oxidize ammonia nitrogen into nitrogen under anaerobic conditions. Anammox reaction is a reaction of chemoautotrophic archaea, which is autotrophic, only needs inorganic carbon sources, and plays an important role in the glob...

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Problems solved by technology

[0003] In the process of sewage treatment, each reaction tank often needs to be left standing for a long time, and after standing still, it is necessary to deal with the sludge and other pollution in the reaction tank in time, and to clean the internal structure in time, especially In the reactor, too much silt accumulated inside reduces the storage space of waste water, and also affects the biological reaction effect

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