A cathode and anode built-in electrochemical microfiltration membrane bioreactor and its application

A bioreactor and microfiltration membrane technology, applied in the field of water treatment, can solve the problems of difficult removal of trace or trace organic matter, secondary point source pollution, etc., and achieve the effects of slowing down membrane fouling, reducing membrane fouling, and low energy consumption

Active Publication Date: 2020-09-25
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is usually difficult to remove these trace or trace organic substances (such as sulfonated aromatic amines that are difficult to biodegrade) by conventional sewage treatment methods. Once these substances are discharged, they will cause secondary point source pollution

Method used

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  • A cathode and anode built-in electrochemical microfiltration membrane bioreactor and its application
  • A cathode and anode built-in electrochemical microfiltration membrane bioreactor and its application
  • A cathode and anode built-in electrochemical microfiltration membrane bioreactor and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A cathode and anode built-in electrochemical microfiltration membrane bioreactor, comprising a water inlet pipe 1, a reactor housing 2, an electrochemical microfiltration membrane assembly 3, a stabilized DC power supply 4, an aeration system and an outlet pipe 6; One end of the water inlet pipe 1 is placed in the reactor housing 2; the electrochemical microfiltration membrane module 3 is arranged in the reactor housing 2, and the electrochemical microfiltration membrane module 3 includes a membrane frame 31, a guide net 32, an embedded Steel mesh flat microfiltration membrane 33 and titanium-based IrO 2 / Ta 2 O coating anode 34, described film frame 31 is provided with the suction port that communicates with film frame 31 lumens, and suction port is connected with outlet pipe 6, is provided with titanium-based IrO in the film frame 31 cavity. 2 / Ta 2 O-coated anode 34, titanium-based IrO 2 / Ta 2 The O-coated anode 34 is connected to the positive pole of the stabili...

Embodiment 2

[0031] A cathode and anode built-in electrochemical microfiltration membrane bioreactor, comprising a water inlet pipe 1, a reactor housing 2, an electrochemical microfiltration membrane assembly 3, a stabilized DC power supply 4, an aeration system and an outlet pipe 6; One end of the water inlet pipe 1 is placed in the reactor housing 2; the electrochemical microfiltration membrane module 3 is arranged in the reactor housing 2, and the electrochemical microfiltration membrane module 3 includes a membrane frame 31, a guide net 32 ​​and an embedded A flat microfiltration membrane 33 of steel mesh, the membrane frame 31 is provided with a suction port communicating with the cavity of the membrane frame 31, the suction port is connected to the outlet pipe 6, and the cavity of the membrane frame 31 is provided with a titanium-based IrO 2 / Ta 2 O-coated anode 34, titanium-based IrO 2 / Ta 2 The O-coated anode 34 is connected to the positive pole of the stabilized DC power supply ...

Embodiment 3

[0035] A cathode and anode built-in electrochemical microfiltration membrane bioreactor, comprising a water inlet pipe 1, a reactor housing 2, an electrochemical microfiltration membrane assembly 3, a stabilized DC power supply 4, an aeration system and an outlet pipe 6; One end of the water inlet pipe 1 is placed in the reactor housing 2; the electrochemical microfiltration membrane module 3 is arranged in the reactor housing 2, and the electrochemical microfiltration membrane module 3 includes a membrane frame 31, a guide net 32 ​​and an embedded A flat microfiltration membrane 33 of steel mesh, the membrane frame 31 is provided with a suction port communicating with the cavity of the membrane frame 31, the suction port is connected to the outlet pipe 6, and the cavity of the membrane frame 31 is provided with a titanium-based IrO 2 / Ta 2 O-coated anode 34, titanium-based IrO 2 / Ta 2 The O-coated anode 34 is connected to the positive pole of the regulated direct current po...

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Abstract

The invention discloses a novel cathode and anode built-in type electrochemical micro-filtration membrane bioreactor and application thereof, and belongs to the technical field of water processing. The bioreactor comprises a water inlet pipe, a reactor shell, an electrochemical micro-filtration membrane assembly, a power supply, an aeration system and a water outlet pipe. The electrochemical micro-filtration membrane assembly comprises a membrane frame, a flow guide net, flat plate micro-filtration membranes with embedded steel wire nets, and a titanium-based IrO2 / Ta2O5 coating electrode. Thetitanium-based IrO2 / Ta2O5 coating electrode is used as an anode for replacing a supporting plate in a traditional flat plate membrane assembly, the flat plate micro-filtration membranes with the embedded steel wire nets are used as cathode membranes and placed on the two outer sides of the membrane frame, the cathode and the anode can both be built in the micro-filtration membranes, an external electric field is applied by the external voltage-stabilizing DC power supply, and suspended particles in sewage can be removed during operation in a continuous flow mode; meanwhile, degradation-resistant organic matter can be efficiently removed through strong oxidizing property substances generated by electro-catalysis without adding any chemical agents, the efficient coupling of the electrochemical oxidization technology and the micro-filtration membrane separation technology is realized, and energy consumption is low.

Description

technical field [0001] The invention relates to a membrane bioreactor and its application, in particular to a cathode-anode built-in electrochemical microfiltration membrane bioreactor and its application, and belongs to the technical field of water treatment. Background technique [0002] With the wide application of organic pesticides, polychlorinated biphenyls, antibiotics and other compounds, they enter the municipal sewage pipe network through various channels. It is usually difficult to remove these micro or trace organic substances (such as sulfonated aromatic amines that are difficult to biodegrade) by conventional sewage treatment methods. Once these substances are discharged, they will cause secondary point source pollution. [0003] Electrochemical advanced oxidation is an emerging environment-friendly technology for treating refractory pollutants in sewage. Oxidant species (such as H 2 o 2 etc.), thereby degrading the refractory organic pollutants in the water...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/00
CPCC02F3/005
Inventor 王志伟陈妹王雪野
Owner TONGJI UNIV
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