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

A membrane bioreaction, membrane bioreactor technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of limited application space, high energy consumption and floor space. It can optimize the aeration volume, save the floor space, and reduce the floor space.

Active Publication Date: 2013-12-11
POWERCHINA ZHONGNAN ENG +1
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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 conve

Method used

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

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Embodiment Construction

[0038] An intensive denitrification and phosphorus removal membrane bioreactor, such as figure 1 As shown, the upper and lower two-layer inverted A / A / O + MBR combination process is adopted. The sewage first enters the anoxic zone 4 at the bottom through the diversion zone. The anoxic zone 4 is equipped with a submersible mixer 5 to make the sewage and The mixed liquid in the anoxic zone, the return mixed liquid in the aerobic zone and the sludge are fully mixed; then slowly rise to the anaerobic zone 6 on the upper layer, and there is no obvious boundary between the anaerobic zone 6 and the anoxic zone 4; Sewage flows into the bottom of the aerobic zone. The bottom of the aerobic zone is the membrane bioreaction zone with MBR membrane module 9, which mainly degrades the organic matter in the sewage and absorbs excessive phosphorus. The elastic filler is hung on the top. At this time, the BOD is greatly reduced, and the BOD / TKN A lower value is conducive to the growth of nitrif...

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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...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 徐巍禹芝文李勇陈湘斌贺前锋熊道文
Owner POWERCHINA ZHONGNAN ENG
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