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Plate-type membrane bioreactor

A technology of membrane bioreactor and bioreactor, which is applied in the direction of sustainable biological treatment, biological water/sewage treatment, chemical instruments and methods, etc., can solve the problems of low gas utilization rate and inability to ensure membrane plate gas flushing, etc., to achieve The flushing effect is obvious, the utilization rate is improved, and the effect of preventing the formation of the pollution layer

Active Publication Date: 2012-07-11
RENCHSAND ECO ENVIRONMENT PROTECTION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aeration method of the aeration device is vertically upward and parallel to the surface of the membrane plate, which cannot guarantee that each membrane plate can get sufficient gas flushing
The gas utilization rate is very low, and only by increasing the air volume and air pressure can the membrane flux of the plate membrane be stable and prevent the formation of a fouling layer

Method used

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  • Plate-type membrane bioreactor
  • Plate-type membrane bioreactor
  • Plate-type membrane bioreactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The plate type membrane bioreactor disclosed by the present invention is as figure 1 , figure 2Shown, comprise membrane support 6, described membrane support 6 is placed at the bottom of described membrane bioreactor, and apart from membrane bioreactor bottom 40cm; Sludge is relatively separated. The membrane plate assembly includes several regularly arranged membrane plates 1, and there is a distance between the adjacent membrane plates 1, and the distance between the upper end surface of the membrane plate assembly and the sewage upper surface of the membrane bioreactor is 40cm, so as to ensure filter effect. An aeration device is also included, and the aeration device includes an aeration tube 2 placed between adjacent membrane plates, and the axis of the aeration tube 2 is parallel to the upper and lower end surfaces of the membrane plates 1 . The aeration pipe 2 communicates with a gas generator 7; the gas generator 7 in this embodiment is an aeration pump.

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Embodiment 2

[0062] This embodiment is another embodiment of the present invention, such as image 3 , Figure 4 Shown, comprise membrane support 6, described membrane support 6 is placed on the bottom of described membrane bioreactor and apart from membrane bioreactor bottom 30cm; The mud is relatively separated. The membrane plate assembly includes several regularly arranged membrane plates 1, and there is a distance between adjacent membrane plates 1, and the distance between the upper end surface of the membrane plate assembly and the sewage upper surface of the membrane bioreactor is 30 cm, so as to ensure filter effect. An aeration device is also included, the aeration device includes an aeration tube 2 placed between adjacent membrane plates and the bottom is flush with the bottom surface of the membrane plate, and the aeration tube 2 communicates with the gas generating device 7; The gas generating device described in this embodiment is an aeration pump.

[0063] Two rows of ae...

Embodiment 3

[0075] This embodiment is another implementation of the plate membrane bioreactor, such as Figure 5 shown. The structure of this embodiment is generally consistent with the structure described in Embodiment 1, the difference lies in the position of the aeration tube and the aeration holes on the aeration tube. Specifically:

[0076] The aeration tube 2 is placed between the adjacent membrane plates, its axis is parallel to the upper and lower end surfaces of the membrane plates 1 , and the distance from the upper and lower end surfaces of the membrane plates 1 is equal. The upper pipe wall of the aeration pipe 2 is provided with several irregularly arranged aeration holes 21 of different sizes, and the gas ejected from the aeration holes 21 forms a gas that directly acts on the surface of the membrane plate. For flushing the water flow, the angle between the air outlet direction of the aeration hole 21 and the surface of the membrane plate is 20-80 degrees.

[0077] The ap...

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Abstract

The invention discloses a plate-type membrane bioreactor which is provided with an aerating apparatus and a membrane plate assembly for purifying water in the membrane bioreactor. The aerating apparatus comprises an aerating tube (2) for washing the membrane plate assembly. An aerating hole (21) washing toward the plate surface of the membrane plate is arranged on the wall of the aerating tube (2). When the aerating apparatus aerates, gas ejected from the aerating hole (21) acts directly on the washing water flow on the plate surface of the membrane plate and the included angle of at least part of the air flow outlet direction and the plate surface of the membrane plate washed is more than 0 degree but less than or equal to 90 degrees. The invention solves the problem that aerating tube of current membrane bioreactor is parallel the plate surface of the membrane plate and aerates upward so that the effect of washing the membrane plate is not good. The bioreactor of the invention is appropriate for occasions of wastewater treatment of various plate-type membrane bioreactors.

Description

technical field [0001] The invention belongs to the technical field of membrane bioreactors in sewage treatment equipment, and in particular relates to a plate type membrane bioreactor. Background technique [0002] Plate membrane bioreactor is a new type of water treatment technology that combines membrane separation technology and biotechnology. It has been widely used in the field of water treatment in environmental engineering. Plate membrane bioreactors are widely used in the market due to their advantages of high treatment efficiency, good effluent quality, and small equipment footprint. However, the existing membrane bioreactors have the problem that the membrane flux will decrease after running for a period of time. The membrane has a strong adsorption capacity. After a period of operation of the membrane reactor, a fouling layer is formed on the surface of the membrane, and the membrane flux gradually decreases, which eventually leads to the failure of the membrane...

Claims

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Application Information

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IPC IPC(8): C02F3/02C02F3/12C02F3/10
CPCY02W10/10
Inventor 秦升益贾屹海陈梅娟吴丹雄
Owner RENCHSAND ECO ENVIRONMENT PROTECTION SCI & TECH CO LTD
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