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 fl

Method used

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

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0052] Example 1

[0053] The plate membrane bioreactor disclosed in the present invention is such as figure 1 , figure 2 As shown, the membrane support 6 is included. The membrane support 6 is placed at the bottom of the membrane bioreactor and is 40 cm away from the bottom of the membrane bioreactor; the membrane plate assembly is placed vertically on the membrane support 6, and The sludge is relatively separated. The membrane plate assembly includes several regularly arranged membrane plates 1 with a distance between adjacent membrane plates 1. The upper end surface of the membrane plate assembly is 40 cm away from the upper surface of the sewage of the membrane bioreactor to ensure Filtering effect. It also includes an aeration device. The aeration device includes an aeration tube 2 placed between the adjacent membrane plates, and the axis of the aeration tube 2 is parallel to the upper and lower end surfaces of the membrane plate 1. The aeration pipe 2 is connected to ...

Example Embodiment

[0061] Example 2

[0062] This embodiment is another embodiment of the present invention, such as image 3 , Figure 4 As shown, the membrane support 6 is included, and the membrane support 6 is placed at the bottom of the membrane bioreactor and is 30 cm away from the bottom of the membrane bioreactor; the membrane plate assembly is placed vertically on the membrane support 6 and is connected to the bottom of the reactor. The mud is relatively separated. The membrane plate assembly includes several regularly arranged membrane plates 1 with a distance between adjacent membrane plates 1. The upper end surface of the membrane plate assembly is at a distance of 30 cm from the upper surface of the sewage of the membrane bioreactor to ensure Filtering effect. It also includes an aeration device. The aeration device includes an aeration pipe 2 that is placed between the adjacent membrane plates and whose bottom is flush with the bottom surface of the membrane plate. The aeration pip...

Example Embodiment

[0074] Example 3

[0075] This embodiment is another embodiment of the plate membrane bioreactor, such as Figure 5 Shown. The structure of this embodiment is basically the same as the structure described in Embodiment 1, and the difference lies in the position of the aeration tube and the aeration hole on the aeration tube. Specifically:

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

[0077] The aperture of ...

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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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