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An anaerobic conductive ceramic membrane bioreactor device and method for effectively controlling membrane fouling

A technology of membrane bioreaction and conductive ceramics, applied in the direction of electrochemical biocombination treatment, anaerobic digestion treatment, etc., can solve the problems of weakening the electric field strength of the membrane and affecting the anti-pollution ability, so as to improve the anti-pollution ability and effluent flux, Effects of preventing membrane fouling and promoting anaerobic digestion

Active Publication Date: 2018-06-05
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of placing electrodes outside the membrane module to form electrostatic repulsion on the membrane surface will weaken the electric field strength of the membrane and affect the anti-pollution ability

Method used

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  • An anaerobic conductive ceramic membrane bioreactor device and method for effectively controlling membrane fouling

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Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 1As shown, the device is composed of a reactor body 4, a conductive ceramic membrane module 11, a low-voltage DC power supply 6, a wire, a suction pump 3, a pressure sensor 13, a temperature control device 10, a gas flow meter 8, etc., wherein the reactor body 4 is a rectangular parallelepiped structure, using plexiglass material; the conductive ceramic membrane assembly 11 is a conductive ceramic membrane material, followed by an anode and a cathode. It is connected to the anode; the reactor body 4 is connected with a temperature control device 10, and a water bath interlayer 5 is provided outside the reactor body 4; the top of the reactor body 4 is provided with a water bath outlet 7 and a gas sampling port, and the gas flow rate is connected through a silicone tube 8; the left bottom of the reactor main body is provided with a water inlet 1, the top right is provided with a water outlet 9, and the bottom is provided with a water bath layer water inlet ...

Embodiment 2

[0037] Using the device described in Example 1, add inoculation mud to the main body of the reactor with an effective volume of 14 L, use the effluent of the primary sedimentation tank of a sewage plant in Changsha as the influent, HRT is 1 day, and the temperature is set at 55 degrees ;Turn on the low-voltage DC power supply, adjust the applied voltage, so that the voltage of the conductive ceramic membrane module connected to the cathode is -560~-600mV; use the intermittent suction mode to run the suction pump, the suction frequency is 10min on, 5min off; start fermentation production Gas and check the gas production. No sludge is discharged during operation.

[0038] At the same time, it was compared with the conventional anaerobic membrane bioreactor, and other conditions were kept the same, and the daily gas production and effluent COD value were measured. The results show that the external DC power supply ensures that the voltage of the conductive ceramic membrane conne...

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Abstract

The invention relates to an anaerobic electrically-conductive ceramic membrane biological reacting device effectively controlling membrane pollution and a method. The device mainly comprises a reactor main body, an electrically-conductive ceramic membrane assembly, a low-voltage direct-current power supply, an electric wire, a suction pump, pressure sensors, a temperature controlling apparatus, a gas flowmeter, and the like. An anaerobic membrane bioreactor is an integrated immersed type anaerobic bioreactor, and adopts electrically-conductive ceramic as a membrane assembly material. The low-voltage direct-current power supply is disposed outside the reactor and is connected to electrically-conductive ceramic membranes through the electric wire. The electrically-conductive ceramic membranes are arranged as cathodes or anodes in order. The pressure sensors are used for measuring filtration pressures and backwashing pressures applied on the electrically-conductive ceramic membranes by the suction pump during working so as to control a cleaning manner and the cleaning frequency of the electrically-conductive ceramic membranes. The low-voltage direct-current power supply can control redox potentials of the electrically-conductive ceramic membrane cathodes and anodes, thus providing environments suitable for growing conditions of each microorganism and finally increasing the anaerobic digestion efficiency.

Description

technical field [0001] The invention belongs to the field of sewage treatment and water resource reuse, and is suitable for energy recovery and pollution removal of high-organic sewage (such as thermal hydrolysis supernatant, etc.), in particular to an anaerobic conductive ceramic membrane bioreactor for effectively controlling membrane pollution and The method can improve the anti-pollution ability of the membrane and at the same time utilize the conductivity of the conductive ceramic to control the oxidation-reduction potential, provide respective suitable growth environments for the microbial flora, and promote the performance of anaerobic digestion. At the same time, the present invention can quickly clean the membrane by reversely connecting the positive and negative poles of the power supply or changing the voltage of the cathode and anode, and cooperate with backwashing. Background technique [0002] Membrane Bioreactor (MBR for short) is a new type of efficient sewag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28
CPCC02F3/005C02F3/28
Inventor 戴晓虎李宁于春晓严寒戴翎翎董滨
Owner TONGJI UNIV
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