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Facultative MBR sewage treatment tank, facultative MBR sewage treatment device and facultative MBR sewage treatment method

A technology for sewage treatment equipment and sewage treatment pools, applied in water/sewage treatment equipment, water/sewage treatment, biological water/sewage treatment, etc., can solve the problems of high energy consumption, easy membrane pollution, dissolved oxygen, etc. Reduced run time, reduced membrane fouling, reduced oxygen levels

Pending Publication Date: 2019-11-26
武汉森泰环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems existing in the prior art, the present invention provides a facultative MBR sewage treatment tank, equipment and treatment method to solve the problem of excessive dissolved oxygen caused by excessive aeration when the traditional aerobic MBR process is used in the treatment of lightly polluted wastewater. High energy consumption, high energy consumption, easy to produce technical problems of membrane fouling

Method used

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  • Facultative MBR sewage treatment tank, facultative MBR sewage treatment device and facultative MBR sewage treatment method
  • Facultative MBR sewage treatment tank, facultative MBR sewage treatment device and facultative MBR sewage treatment method
  • Facultative MBR sewage treatment tank, facultative MBR sewage treatment device and facultative MBR sewage treatment method

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Embodiment 1

[0036] In order to solve the technical problems that the traditional aerobic MBR process is used in the treatment of lightly polluted wastewater, the dissolved oxygen is too high, the energy consumption is high, and the membrane fouling is easy to occur due to excessive aeration. Embodiment 1 of the present invention provides a kind of facultative type MBR sewage treatment pond 100, and it comprises the water inlet zone, mixed reaction zone, membrane separation water outlet zone that are arranged from bottom to top, specifically,

[0037] The water inlet of the water inlet area is provided with a filter screen 301 for pre-filtering impurities in the sewage, such as figure 1 As shown, the bottom of the water inlet area is provided with a water distribution pipe 101, and a plurality of upward water distribution holes are evenly distributed on the water distribution pipe 101, and are connected to the pulse generator through a connecting pipe; The generator is set above the aerobi...

Embodiment 2

[0043] In order to solve the technical problems that the traditional aerobic MBR process is used in the treatment of lightly polluted wastewater, the dissolved oxygen is too high, the energy consumption is high, and the membrane fouling is easy to occur due to excessive aeration. Embodiment 2 of the present invention provides an aerobic type MBR sewage treatment equipment, which includes a swirl grit chamber 200, a water distribution pool 300, an aerobic MBR sewage treatment pool 100 and a clear water pool 400 connected in sequence; specifically,

[0044] like figure 2 and image 3 As shown, the cyclone desander 201 is installed in the cyclone desander 200, and the sewage is pretreated through the cyclone desander 201, which can remove hard particles in the water; the cyclone desander The rotational speed of the stirrer in 201 is preferably 12-20 r / min.

[0045] like figure 2 and image 3 As shown, the water inlet of the water distribution pool 300 is arranged at the upp...

Embodiment 3

[0053] In order to solve the technical problems that the traditional aerobic MBR process is used in the treatment of lightly polluted wastewater, the dissolved oxygen is too high, the energy consumption is high, and the membrane fouling is easy to occur due to excessive aeration. Embodiment 3 of the present invention provides the concurrent oxygen type MBR sewage treatment method, adopts the concurrent oxygen type MBR sewage treatment equipment described in embodiment 2, and it comprises the following steps:

[0054] S1, wastewater enters the cyclone desander tank through the water inlet pipe, and the sewage is pretreated by the cyclone desander 201 to remove hard particles in the influent; the rotational speed of the agitator in the cyclone desander 201 is preferably 12~ 20r / min.

[0055] S2, the effluent from the swirling grit chamber enters the water distribution tank 300, and is filtered by the filter 301 to remove the particulate matter, insoluble organic matter and fiber...

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Abstract

The invention discloses a facultative MBR sewage treatment tank, a facultative MBR sewage treatment device and a facultative MBR sewage treatment method. The tank includes a water inlet area, a mixingreaction area and a membrane separation water outlet area which are arranged from bottom to top, wherein a water distribution pipeline is arranged at the bottom of the water inlet area, and the waterdistribution pipeline is connected with a pulse generator; and the membrane separation water outlet area is provided with a membrane separation box, a gas distribution tube is arranged below the membrane separation box, the gas distribution tube is connected with a membrane scrubbing fan, a return pipeline is arranged between the water inlet area and the membrane separation water outlet area, thereturn port of the return pipeline is arranged close to the membrane separation box, and the water outlet of the return pipeline is connected with the water distribution pipeline. Sludge and water are hydraulically stirred by pulsed water flow generated periodically by the water distribution pipeline, and deposits attached to the outer wall of the membrane separation box in the membrane separation water outlet area are washed with the gas distribution pipeline, so the membrane pollution is effectively reduced, the running time of the membrane scrubbing fan is shortened, the facultative environment of water is ensured, the growth and reproduction of microorganisms in lightly polluted water are benefited, and the purification rate of sewage treatment is increased.

Description

technical field [0001] The invention relates to sewage treatment equipment, in particular to a facultative MBR sewage treatment pool, equipment and treatment method. Background technique [0002] In the field of sewage treatment, MBR, also known as membrane bioreactor, is a water treatment process that combines a membrane separation unit with a biological treatment unit. Due to the high-efficiency separation of the membrane, the separation effect is much better than that of the traditional sedimentation tank, and its interception effect also enables the biological reaction tank to maintain a high concentration of microorganisms. Therefore, the MBR biological reaction tank has high efficiency in removing pollutants, has good adaptability to various changes in influent load (water quality and water quantity), and can ensure good and stable effluent water quality. [0003] In terms of actual operation and maintenance, affected by the high sludge concentration (above 10,000 mg / ...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/10C02F101/16
CPCC02F9/00C02F2101/16C02F2001/007C02F3/308C02F3/302C02F3/1268C02F3/34C02F1/001C02F2201/007
Inventor 彭继伟肖磊冯梅
Owner 武汉森泰环保股份有限公司
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