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Immersion plate-type membrane bioreactor for improving membrane pollution control and wastewater treatment method using same

A bioreactor, pollution control technology, applied in sustainable biological treatment, anaerobic digestion treatment, aerobic process treatment and other directions, can solve the problems of low energy utilization, poor physical control technology effect, etc., to improve the critical flux , the effect of promoting renewal and slowing down the rate of formation

Active Publication Date: 2014-08-27
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a submerged plate membrane bioreactor with enhanced membrane pollution control for the control of membrane pollution in submerged plate membrane bioreactors (MBR), especially the disadvantages of poor physical control technology and low energy utilization. Reactor and method for its sewage treatment

Method used

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  • Immersion plate-type membrane bioreactor for improving membrane pollution control and wastewater treatment method using same
  • Immersion plate-type membrane bioreactor for improving membrane pollution control and wastewater treatment method using same
  • Immersion plate-type membrane bioreactor for improving membrane pollution control and wastewater treatment method using same

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Embodiment 1

[0053] The sewage treated in the following examples is printing and dyeing wastewater, and other unspecified parts involved in the present invention are prior art.

[0054] (1) As attached figure 1 As shown, in the submerged plate membrane sewage biological treatment reactor, 14 plate membrane modules 2 are fixed on the reactor frame 3 to form a whole and move synchronously. Several biofilm carriers 1 are suspended and distributed on both sides of the plate-type membrane element 2, forming a plate-type membrane bioreactor for sewage treatment composed of suspended sludge and biofilm. The vertical distance between adjacent plate-type membrane modules 2 is 1.5 times the maximum length of a single biofilm carrier 1 . A reciprocating drive device 12 is arranged on both sides of the reactor frame 3 and is connected with the reactor through the reciprocating drive device 12 . The total filling volume of the soft biofilm carrier 1 suspended in the reactor is 50% of the effective vo...

Embodiment 2

[0060] Compared with embodiment 1, as attached figure 2 As shown, the difference is that the reciprocating transmission device 12 is arranged at the bottom of the reactor frame 3, driven by the motor 14, the entire reactor frame 3 reciprocates below the liquid surface in a horizontal direction parallel to the plate membrane module 2. Set the initial transmembrane pressure difference to 5kPa. When the transmembrane pressure difference is less than 10kPa, the reciprocating frequency of the plate membrane is 5 times / s, and the amplitude is 0.2 times the width of the plate membrane element 2. The biofilm carrier 1 is suspended in the Clean the surface of the plate membrane at a relatively low speed in the device; when the transmembrane pressure difference is 10-20kPa, set the reciprocating frequency of the plate membrane to 5 times / s, and the amplitude is 0.3 times the width of the plate membrane element 2; when the transmembrane When the pressure difference is 20-30kPa, set the ...

Embodiment 3

[0063] (1) As attached image 3 As shown, in the submerged plate membrane sewage biological treatment reactor, several biofilm carrier packing frames 4 are evenly fixed on the reactor frame 3, forming a whole and moving together. There are several biofilm carriers 1 used for biofilm growth in the biofilm carrier packing frame 4, and the biofilm carrier packing frames 4 are arranged on both sides of the plate membrane element 2 to form a sewage treatment plate membrane composed of suspended sludge and biofilm In the bioreactor, the total filling volume of the biofilm carrier 1 is 50% of the effective volume of the plate membrane bioreactor, and the vertical distance between adjacent plate membrane elements 2 is slightly smaller than the thickness of the filler frame after a single biofilm carrier 1 is filled. The membrane carrier packing frame is plug-in type, which can be easily removed or moved in, and is convenient for the replacement of the biofilm carrier.

[0064]A recip...

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Abstract

The invention discloses an immersion plate-type membrane bioreactor for improving membrane pollution control and a wastewater treatment method using the immersion plate-type membrane bioreactor, belonging to the technical field of water pollution control. The immersion plate-type membrane bioreactor disclosed by the invention is provided with a reciprocating type driving device; the reciprocating type driving device is connected to a plate-type membrane element reactor framework or a fixed biological membrane carrier stuffing frame so as to ensure the regularly and controllably relative movement of a biological membrane carrier and a plate-type membrane, so that the biological membrane carrier scrubs the surface of the plate-type membrane, the pollution process of the plate type membrane is slowed down, and the frequency and amplitude of the relative movement can be adjusted and controlled at any time according to actual requirements. The reactor adopts a micropore aeration manner during aerobic biological treatment so as to improve the transfer efficiency of oxygen and an energy-saving effect. A biological membrane grows on the biological membrane carrier, so that microbial florae for wastewater treatment are enriched, and the concentration of suspended active sludge is reduced; and biological stuffing has a function of fixing certain organic matters easily causing membrane pollution and is capable of effectively improving the degradation ability of the reactor to organic pollutants.

Description

technical field [0001] The invention belongs to the technical field of water pollution control, and in particular relates to a submerged plate-type membrane bioreactor and a sewage treatment method for strengthening membrane pollution control. Background technique [0002] At present, the structural forms of membrane bioreactor (Membrane bioreactor, MBR) separation membrane modules mainly include hollow fiber curtain type, plate type, and tube type. Due to the stable membrane functional layer of the plate membrane, low structural defects, strong compressive capacity, and unfavorable deformation, the flat membrane has a higher membrane flux for sewage treatment than other structural forms of membrane components. The process characteristics such as smaller membrane pressure difference and long membrane cleaning cycle make plate membranes particularly valued and applied. [0003] Membrane fouling is the most important factor affecting MBR, which directly affects the economy an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/02C02F3/28
CPCY02W10/10
Inventor 周律辛怡颖
Owner TSINGHUA UNIV
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