Intensive nitrogen-phosphorus removing membrane biological reaction device and sewage treatment method

Abstract

The invention discloses an intensive nitrogen-phosphorus removing membrane biological reaction device and a sewage treatment method. The intensive nitrogen-phosphorus removing membrane biological reaction device comprises an inverted A / A / O (anoxic / anaerobic / aerobic) reaction pool; the inverted A / A / O reaction pool comprises an anoxic / anaerobic pool and an MBR (membrane bioreactor), wherein multiple guide plates are arranged in the anoxic / anaerobic pool, and the anoxic / anaerobic pool is divided into an anoxic area and an anaerobic area from bottom to top; the anoxic area is communicated with a water inlet pipe, and the anaerobic area is communicated with the MBR; an aerobic area guide plate, an MBR assembly and packing are arranged in the MBR; a mud outlet at the bottom of the MBR is mixed with a mixed liquid outlet at the upper part of the MBR and then is respectively communicated with the anoxic area and anaerobic area of the anoxic / anaerobic pool through corresponding branch pipes; and a water outlet of the MBR assembly is communicated with a water producing pipe. The intensive nitrogen-phosphorus removing membrane biological reaction device and sewage treatment method disclosed by the invention are reasonable in space layout, and can further reduce the energy consumption, therefore, the device and method disclosed by the invention are especially applicable to the treatment of decentralized sewage of urban living communities, hotels, restaurants, office buildings, shopping malls and the like.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an intensive nitrogen and phosphorus removal membrane biological reaction device and a sewage treatment method. Background technique [0002] The existing biochemical denitrification and phosphorus removal technologies for urban sewage mainly fall into the following three categories: A / A / O process, oxidation ditch method and SBR method. Generally, urban sewage can reach the standard after biochemical denitrification and phosphorus removal, followed by precipitation and disinfection emission. With the increasing shortage of water resources, it has gradually become a development direction to further treat the sewage on the basis of meeting the discharge standards, so as to realize the reuse of reclaimed water. A variety of biochemical treatment + MBR membrane bioreactor combination process came into being. [0003] The inverted A / A / O process adopts an anoxic-anaerobic-ae...

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Problems solved by technology

[0006] At present, due to the defects of high energy consumption of MBR membrane bioreactor, its application space is greatly limited.

In addition, although MBR replaces the secondary settling tank in the conventional biochemical method, it still occupies a relatively large area for integrated equipment suitable for scattered sewage in urban living quarters, hotels, restaurants, office buildings, shopping malls, etc.

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