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Integrated denitrification membrane bioreactor and sewage treatment method using bioreactor

A technology of membrane bioreactor and sewage treatment method, which is applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., which can solve complex devices, poor denitrification effect, and cumbersome process flow and other issues to achieve the effect of improving work efficiency

Active Publication Date: 2022-04-19
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Chinese Invention Patent Publication CN 113603304 A discloses a three-sludge aerobic-hydrolysis-aerobic-membrane bioreactor and method, which integrates the aerobic pool, the hydrolysis pool and the MBR reactor, but the process flow is too complicated and the reaction The investment cost of device construction is high, the denitrification effect is not good, and the TN removal rate is only 82.6%
[0006] Chinese invention patent publication CN 111439892 A discloses an integrated membrane bioreactor domestic sewage treatment device and method, the device is too complicated and the organic matter removal rate is only 85%

Method used

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  • Integrated denitrification membrane bioreactor and sewage treatment method using bioreactor
  • Integrated denitrification membrane bioreactor and sewage treatment method using bioreactor
  • Integrated denitrification membrane bioreactor and sewage treatment method using bioreactor

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Effect test

Embodiment 1

[0075] The reactor feed water is medium-strength urban domestic sewage, the carbon source is mainly glucose, and the nitrogen source is mainly NH 4 Cl and urea, phosphorus source is mainly KH 2 PO 4 and K 2 HPO 4 , the alkalinity is mainly NaHCO 3 . The average COD concentration of the domestic sewage is 564mg / L, the average ammonia nitrogen concentration is 24.58mg / L, the average TN concentration is 39.5mg / L, and the average TP concentration is 5.96mg / L.

[0076] The inner bottom of the anoxic (anaerobic) unit (3) is provided with a symmetrical raised slope (7) with a slope of 1:1.

[0077] The effective volume ratio of the first zone of the aerobic unit (2), the anoxic (anaerobic) unit (3) and the second zone of the aerobic unit (4) is 3:2:3.

[0078] The inflow flow rate of the first zone (2) of the aerobic unit and the second zone (4) of the aerobic unit is 1:1.

[0079] The ratio of the influent flow rate to the effluent flow rate of the first zone (2) of the aerob...

Embodiment 2

[0093] The reactor feed water is medium-strength urban domestic sewage, the carbon source is mainly glucose, and the nitrogen source is mainly NH 4 Cl and urea, phosphorus source is mainly KH 2 PO 4 and K 2 HPO 4 , the alkalinity is mainly NaHCO 3 . The average COD concentration of the domestic sewage is 564mg / L, the average ammonia nitrogen concentration is 24.58mg / L, the average TN concentration is 39.5mg / L, and the average TP concentration is 5.96mg / L.

[0094] The inner bottom of the anoxic (anaerobic) unit (3) is provided with a symmetrical raised slope (7) with a slope of 1:1.

[0095] The effective volume ratio of the first zone of the aerobic unit (2), the anoxic (anaerobic) unit (3) and the second zone of the aerobic unit (4) is 3:2:3.

[0096] The inflow flow rate of the first zone (2) of the aerobic unit and the second zone (4) of the aerobic unit is 1:1.

[0097]The ratio of the influent flow rate to the effluent flow rate of the first zone (2) of the aerobi...

Embodiment 3

[0111] The reactor feed water is medium-strength urban domestic sewage, the carbon source is mainly glucose, and the nitrogen source is mainly NH 4 Cl and urea, phosphorus source is mainly KH 2 PO 4 and K 2 HPO 4 , the alkalinity is mainly NaHCO 3 . The average COD concentration of the domestic sewage is 564mg / L, the average ammonia nitrogen concentration is 24.58mg / L, the average TN concentration is 39.5mg / L, and the average TP concentration is 5.96mg / L.

[0112] The inner bottom of the anoxic (anaerobic) unit (3) is provided with a symmetrical raised slope (7) with a slope of 1:1.

[0113] The effective volume ratio of the first zone of the aerobic unit (2), the anoxic (anaerobic) unit (3) and the second zone of the aerobic unit (4) is 3:2:3.

[0114] The inflow flow rate of the first zone (2) of the aerobic unit and the second zone (4) of the aerobic unit is 1:1.

[0115] The ratio of the influent flow rate to the effluent flow rate of the first zone (2) of the aerob...

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Abstract

The invention provides an integrated denitrification membrane bioreactor and a sewage treatment method using the integrated denitrification membrane bioreactor. The integrated denitrification membrane bioreactor is provided with at least one reaction tank, and the reaction tank comprises a first aerobic unit area, an anoxic unit and a second aerobic unit area; partition plates are respectively arranged between the aerobic unit area I and the anoxic unit and between the anoxic unit and the aerobic unit area II; a convex slope is arranged at the bottom of the anoxic unit. According to the integrated denitrification membrane bioreactor disclosed by the invention, microorganisms can better adapt to an aerobic and anoxic coexistence environment, the problem of poor denitrification effect caused by sludge backflow is avoided, pollutants such as nitrogen and organic matters in domestic sewage are efficiently and stably removed, and the denitrification treatment effect is enhanced.

Description

technical field [0001] The invention relates to a membrane bioreactor, which is applied to integrated denitrification sewage treatment and belongs to the technical field of sewage treatment. Background technique [0002] Membrane bioreactor (MBR) is a sewage treatment technology that organically combines biological treatment units and membrane separation units. The biological treatment unit is mainly to complete the conversion and removal of organic matter, inorganic matter and nutrients in sewage; the membrane separation unit is mainly to complete solid-liquid separation, replacing the secondary sedimentation tank in the traditional sewage biological treatment process. Membrane interception in MBR can make all the biomass trapped in the reactor, increase the sludge age and sludge concentration, and is beneficial to the reproduction of nitrifying bacteria, thereby increasing the nitrification rate. Compared with the traditional sewage biological treatment process, MBR integ...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F3/28
CPCC02F3/301C02F3/302C02F3/2853C02F2303/14C02F2209/22C02F2209/16C02F2209/44C02F2209/001Y02W10/10
Inventor 田家宇孟桐洋肖峰高珊珊
Owner HEBEI UNIV OF TECH
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