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Microbial electrochemical coupling membrane bioreactor system and sewage treatment method

A technology of microbial electrochemistry and membrane bioreactor, which is applied in the fields of electrochemical biocombination treatment, biological water/sewage treatment, chemical instruments and methods, etc. It can reduce the energy consumption of sludge return, strengthen the ability of denitrification and phosphorus removal, and improve the quality of effluent.

Active Publication Date: 2020-10-09
TSINGHUA UNIV
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  • Claims
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AI Technical Summary

Problems solved by technology

Technical challenges of MBR process: (1) The aeration energy consumption of conventional MBR is high; (2) A single MBR can effectively remove organic matter and ammonia nitrogen, but the removal of total nitrogen and total phosphorus is not ideal; (3) Phosphorus in the treatment process Transferred to sludge and then discarded

Method used

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  • Microbial electrochemical coupling membrane bioreactor system and sewage treatment method
  • Microbial electrochemical coupling membrane bioreactor system and sewage treatment method
  • Microbial electrochemical coupling membrane bioreactor system and sewage treatment method

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Embodiment Construction

[0031] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer" etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and The description is simplified, rather than indicat...

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Abstract

The invention discloses a microbial electrochemical coupling membrane bioreactor system and a sewage treatment method. The system comprises an airlift circulation type membrane bioreactor, a microbialelectrochemical device and a nitrogen and phosphorus recovery area. The airlift circulation type membrane bioreactor comprises a plurality of airlift circulation type membrane bioreactor units; eachairlift circulation type membrane bioreactor unit comprises an anoxic zone, an anaerobic zone and an aerobic zone; the microbial electrochemical device comprises an anode electrode, a cathode electrode and an external circuit for connecting the cathode and the anode; and the nitrogen and phosphorus recovery area comprises an anion exchange membrane, a cation exchange membrane and an area between the anion exchange membrane and the cation exchange membrane. The system not only has the efficient sewage treatment and solid-liquid separation capabilities of the airlift circulation type membrane bioreactor to reduce the sludge backflow energy consumption, but also combines the characteristics of anaerobic and aerobic region distribution of a circulation system, and the overall nitrogen and phosphorus removal capability is enhanced by coupling a microbial electrochemical system, thereby further improving the effluent quality.

Description

Technical field [0001] The present invention relates to the technical field of sewage treatment. Specifically, the present invention relates to a microbial electrochemical coupled membrane bioreactor system and a sewage treatment method. Background technique [0002] The shortage of resources and serious water pollution have always been key issues in human society. The membrane bioreactor (MBR), as a new type of sewage treatment process, can use membrane modules to achieve efficient solid-liquid separation, effectively increase the sludge concentration, thereby improving the effluent quality and reducing the floor space. MBR has been widely used in sewage treatment fields such as urban and rural domestic sewage, industrial sewage, and landfill leachate. MBR process technical challenges: (1) Conventional MBR has high aeration energy consumption; (2) A single MBR can effectively remove organic matter and ammonia nitrogen, but the removal of total nitrogen and total phosphorus is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/00C02F3/34C02F101/10C02F101/16
CPCC02F3/301C02F3/005C02F3/302C02F3/34C02F2101/105C02F2101/16Y02W10/10
Inventor 张潇源付博亚黄霞邱勇
Owner TSINGHUA UNIV
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