Integrative aerobic particle sludge membrane bioreactor sewage treatment method

Abstract

This invention discloses a method for treating wastewater by using integrated aerobic granular sludge membrane biological reactor. Said reactor comprises a reaction pond, in which are placed baffle plates (vertically placed plates and inclined placed plates). The above mentioned plates separate the reaction pond into a reaction zone and a settling zone. In the settling zone, on the side wall of reaction pond is equipped with an effluent outlet tube. In the lower middle part of reaction zone is equipped with an aerator. Above the aerator are placed membrane elements, which are then connected with effluent outlet tube and sucking pump. The operation procedures are: continuously feeding wastewater, feeding aerobic granular sludge into the biological reactor, controlling the temperature, proceeding the biological reaction. This invention has advantages of: simple treatment process, high treatment efficiency, stable operation, obtaining effluent water with the need requirement, long service life of membrane elements, low investment and energy-saving.

Description

technical field

[0001] The invention relates to a method for treating sewage, in particular to a method for treating sewage with an aerobic granular sludge membrane bioreactor. Background technique

[0002] Membrane bioreactor (Membrane bioreactor, MBR), as an efficient and compact treatment technology, has been widely researched and applied in the field of sewage treatment and reuse, but in practical applications, problems such as insufficient denitrification capacity and serious membrane fouling still exist. It is an outstanding problem restricting the further development of MBR. Membrane fouling control mainly includes the improvement of membrane material, the optimization of operating conditions and the improvement of the characteristics of the sludge mixture. Since the microbial flocs and most of the macromolecular organic matter in the sludge mixture cannot pass through the membrane, the activated sludge in the membrane The formation of fouling layers accumulated on t...

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