Cathode catalysis membrane coupled membrane-free microbial fuel cell for coking wastewater treatment system

A cathode catalysis and coking wastewater technology, which is applied in biochemical fuel cells, biological water/sewage treatment, electrochemical and biological combined treatment, etc., can solve problems such as poor water quality of microbial fuel cell effluent, difficult treatment of coking wastewater, complex process flow, etc. Achieve the effect of reducing process operation cost, improving effluent water quality and good treatment effect

Inactive Publication Date: 2018-07-13
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a novel cathode catalytic membrane coupling non-ion exchange membrane microbial fuel cell reactor and coking wast

Method used

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  • Cathode catalysis membrane coupled membrane-free microbial fuel cell for coking wastewater treatment system
  • Cathode catalysis membrane coupled membrane-free microbial fuel cell for coking wastewater treatment system
  • Cathode catalysis membrane coupled membrane-free microbial fuel cell for coking wastewater treatment system

Examples

Experimental program
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Effect test

Embodiment 1

[0022] (1) Cathode TiO 2 / PVDF catalytic membrane preparation: TiO 2 (15wt%) and carbon nanofibers (25wt%) were added to PVDF (10wt%) DMF casting solution, after 6h stirring, ultrasonic degassing for 30min, carbon nanofiber cloth as substrate, coating thickness of 300μm, TiO is obtained after 12h phase transformation 2 / PVDF catalytic membrane cathode.

[0023] (2) Membrane-free microbial fuel cell coupled with cathode catalytic membrane system to treat low-concentration coking wastewater operation: the anode chamber is filled with activated carbon particles loaded with electricity-producing microorganisms (filling degree 85%), and the carbon rod is a conductive anode inserted into the activated carbon particles. Airtight low-concentration coking wastewater (COD about 200mg / L); the middle chamber filled with quartz sand between the two chambers replaces the proton exchange membrane; the above catalytic membrane is installed in a rectangular membrane module (double-sided), and the ...

Embodiment 2

[0025] (1) Cathode TiO 2 / Preparation of PVDF catalytic membrane: Same as described in Example 1.

[0026] (2) Membrane-free microbial fuel cell coupled with cathode catalytic membrane system to treat high-concentration coking wastewater operation: the anode chamber is filled with activated carbon particles loaded with electricity-producing microorganisms (filling degree 85%), and the carbon rod is a conductive anode inserted into the activated carbon particles. Airtight low-concentration coking wastewater (COD about 2000mg / L); the middle chamber filled with quartz sand between the two chambers replaces the proton exchange membrane; the above-mentioned catalytic cathode membrane is installed in a rectangular membrane module (double-sided), and the bottom of the cathode chamber is exposed Air provides oxygen for electronic activation of oxygen to generate free radicals; the water from the top of the cathode membrane module is pumped by a pump, and the anode and cathode are connecte...

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Abstract

The invention belongs to the technical field of sewage purification and wastewater recycling, discloses a cathode catalysis membrane coupled membrane-free microbial fuel cell for a coking wastewater treatment system, and in particular relates to a method that pollutants are degraded through an anode chamber power generation microorganism anaerobic oxidation function, together with a cathode catalysis membrane photonic/electric catalysis degradation function and a membrane filtering function, both intermittent and continuous operation modes have relatively high degradation rates, and the designpurposes of sewage treatment and biological power generation can be achieved. The battery has the effects and benefits that the effluent quality of a conventional MFC (Microbial Fuel Cell) can be improved; as a middle layer is filled with quartz sand, a proton exchange membrane can be replaced, and the cost can be lowered; due to adoption of a coupling system micro electric field, the service life of a filtering membrane can be prolonged, and degradation refractory material can be subjected to catalytic oxidation treatment; a reaction system is small in floor space, short in procedure, good in treatment effect and energy-saving and environmental-friendly, and large-scale experiments and industrialization can be well carried out.

Description

Technical field [0001] The invention belongs to the technical field of sewage treatment and refractory waste water treatment and resource utilization, and relates to a new coupled cathode catalytic membrane and a microbial fuel cell reactor without ion exchange membrane, which exhibits good effects when treating refractory coking wastewater. . Background technique [0002] Coking wastewater is a type of typical refractory high-concentration organic wastewater. It is wastewater produced in the coking process of the coal chemical industry, and its sources are relatively concentrated. my country is currently the world's largest coke producer and exporter, and the pollution problem of coking wastewater is particularly serious. Coking wastewater has complex components, high concentration of organic matter, high chroma, high toxicity, and difficult degradation. The treatment of coking wastewater has become a major problem in the water treatment industry. In order to meet the national...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F3/34H01M8/16
CPCC02F3/005C02F3/28C02F3/34H01M8/16C02F1/32C02F1/725C02F2001/46152C02F2201/46115H01M4/8605H01M4/9016Y02E60/50Y02W10/10
Inventor 柳丽芬张艺臻孙嘉琪安路阳王学凯
Owner DALIAN UNIV OF TECH
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