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Method for promoting coking wastewater treatment through photocatalytic electrode coupled microbial fuel cell

An electrode coupling, coking wastewater technology, applied in special compound water treatment, biochemical fuel cells, biological water/sewage treatment, etc., to achieve the effect of reducing concentration, low energy consumption and improving efficiency

Active Publication Date: 2018-11-13
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, the La-ZnIn 2 S 4 / RGO / BiVO 4 The application of three-way composite catalysts in photocatalytic microbial fuel cells to degrade coking wastewater has not yet appeared.

Method used

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  • Method for promoting coking wastewater treatment through photocatalytic electrode coupled microbial fuel cell
  • Method for promoting coking wastewater treatment through photocatalytic electrode coupled microbial fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Catalysts with different RGO contents degrade coking wastewater

[0022] In the double-chamber cuboid reactor system with photocatalytic membrane electrodes coupled with microbial fuel cells, both the membrane module and the halogen tungsten lamp are put into the system, and the carbon rods are put into the microbial anode separated by the proton exchange membrane, and the photocatalyst contacts The system contains NaHSO 3The coking waste water is photocathode, there is an aeration head at the bottom of the cathode chamber for continuous aeration, connect the top of the membrane with crocodile clips, put the halogen tungsten lamp into the reaction device, turn off the power supply of the halogen tungsten lamp before the reaction, and perform a dark reaction for 0.5h first After that, turn on the power of the tungsten-halogen lamp and react with light for 4 hours. After the reaction starts, take samples with a pipette every 0.5 hours for the first 2.5 hours, a...

Embodiment 2

[0024] Embodiment two: containing the same concentration of NaHSO 3 and Na 2 SO 4 system to degrade coking wastewater

[0025] In the dual-chamber rectangular parallelepiped reactor system with photocatalytic membrane electrodes coupled with microbial fuel cells, both the membrane module and the tungsten halogen lamp are put into the system, and carbon rods are put into the microbial anode separated by a proton exchange membrane. Catalyst contact system containing NaHSO 3 The coking wastewater is the photocathode (the other is the photocatalyst contact system containing Na 2 SO 4 The coking wastewater is a photocathode, and other conditions are the same) There is an aeration head at the bottom of the cathode chamber for continuous aeration, connect the top of the membrane with crocodile clips, put the halogen tungsten lamp into the reaction device, turn off the power supply of the halogen tungsten lamp before the reaction, and first carry out 0.5 After the dark reaction o...

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Abstract

The invention provides a method for promoting coking wastewater treatment through a photocatalytic electrode coupled microbial fuel cell, and belongs to the technical field of coking wastewater treatment and energy-saving recycling. A conductive catalytic composite membrane electrode is formed by a method of fixedly coating a stainless steel mesh with La-ZnIn2S4 / RGO / BiVO4 and silica sol; HSO<3-> is added into coking wastewater; a carbon stick is inserted into an anode microorganism and is connected through a lead wire to form a circuit loop; and a halogen tungsten lamp is used as a light source acting on a catalytic electrode, so as to form a system for treating the coking wastewater through the photocatalytic electrode coupled microbial fuel cell. Influence on the effect of catalyticallydegrading the coking wastewater under the condition of La-ZnIn2S4 / RGO / BiVO4 catalysts with different RGO contents and influence on the effect of degrading the coking wastewater through NaHSO3 and Na2SO4 solutions at the same concentrations are respectively realized.

Description

technical field [0001] The invention belongs to the technical field of coking wastewater treatment and energy saving and resource utilization, and relates to La-ZnIn 2 S 4 / RGO / BiVO 4 Preparation of composite catalyst and photocatalytic electrode coupling microbial fuel cell components, and their synergistic effect, and adding HSO in the reaction process 3 - Degradation treatment of coking wastewater, HSO 3 - It helps to improve the degradation rate of coking wastewater, and plays a role in promoting the treatment of coking wastewater. Background technique [0002] Coking wastewater is mainly produced by the coal industry and the petroleum industry. It is a difficult-to-treat industrial organic wastewater produced during the process of coking, gas carbonization and purification at 960-1000 degrees Celsius. Its composition is very complex and has sulfur Toxic and harmful substances such as pollutants, cyanide, high concentration of ammonia nitrogen, and a large number o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34B01J27/04C02F1/30C02F1/461C02F1/467C02F3/00C02F101/30
CPCC02F1/30C02F1/46109C02F1/4672C02F3/005C02F3/34B01J27/04C02F2001/46142C02F2101/30B01J35/39B01J35/33C02F2103/365C02F2201/46115C02F2305/10Y02E60/50H01M8/16H01M4/96H01M4/9016H01M4/8673H01M4/8663H01M4/8882H01M4/8803H01M4/8825H01M14/00C02F2103/34C02F2305/00
Inventor 柳丽芬周静石静王守凯安陆阳
Owner DALIAN UNIV OF TECH
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