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Double-potential anode electrolysis device and method

An anode electrolysis and electrolysis device technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc., can solve the problem of increasing the complexity of the electrolysis device, the inability of the electrolyzer to achieve coordinated oxidation, and the separation of time and space Large and other problems, to achieve significant application value, low energy consumption, high current efficiency

Inactive Publication Date: 2021-05-25
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this increases the complexity of the electrolysis device, and when the wastewater and electrolyte pass through different electrolyzers, the space-time separation scale is large, and some intermediate products may repolymerize, and the combined electrolyzer cannot achieve the purpose of synergistic oxidation.

Method used

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  • Double-potential anode electrolysis device and method

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Effect test

Embodiment 1

[0024] (1) Process the anode 1, the base of the anode 1 is titanium metal, the coating is ruthenium oxide, and the size of the anode 1 is 100mm*100mm*1mm. Anode 1 The electrode group includes 10 rectangular electrodes with a length, width, and thickness of 100mm*3mm*1mm. The width of a single anode is 3mm, and the distance between each anode is 7mm.

[0025] (2) Process the anode 2, the base of the anode 2 is titanium metal, the coating is titanium black, and the size of the anode 2 is 100mm*100mm*1mm. The anode 2 electrode group includes 10 rectangular electrodes with a length, width, and thickness of 100mm*3mm*1mm. The width of a single anode is 3mm, and the distance between each anode is 7mm.

[0026] (3) In the plate and frame electrolyzer, the anode 1 electrode group and the electrode 2 electrode group are arranged in a staggered manner and fixed in the center, such as figure 1 shown. The single electrode of anode 1 is placed between the two electrodes of anode 2, and t...

Embodiment 2

[0031] (1) Process the anode 1, the base of the anode 1 is titanium metal, the coating is iridium oxide, and the effective size of the anode 1 is about 100mm*90mm*0.5mm. The anode 1 electrode group includes 15 rectangular electrodes with a length, width, and thickness of 100mm*2mm*0.5mm. The width of a single anode is 2mm, and the distance between each anode is 4mm.

[0032] (2) Process the anode 2, the base of the anode 2 is titanium metal, the coating is titanium black, and the effective size of the anode 2 is about 100mm*90mm*0.5mm. The anode 2 electrode group includes 15 rectangular electrodes with a length, width, and thickness of 100mm*2mm*0.5mm. The width of a single anode is 2mm, and the distance between each anode is 4mm.

[0033] (3) In the plate and frame electrolyzer, the anode 1 electrode group and the electrode 2 electrode group are arranged in a staggered manner and fixed in the center, such as figure 1 shown. The single electrode of anode 1 is placed between ...

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Abstract

The invention discloses a double-potential anode electrolysis device and method, and relates to the field of electrochemical anodic oxidation and water treatment. Double-potential anodes in an electrolytic cell comprise two sets of anodes which are arranged in a staggered manner and do not communicate with each other, and the potential applied to an anode 1 is lower than that of an anode 2. A catalyst layer of the anode 1 is made of an electrode material with lower oxygen evolution overpotential (less than 600mV at 10 mA*cm<-2>). A catalyst layer of the anode 2 is made of an electrode material with relatively high oxygen evolution overpotential (greater than 600mV at 10 mA*cm<-2>). The anode 1 and the anode 2 share one set of cathode. Wastewater flows through the anode 1 and the anode 2 which are alternately arranged, organic substance functional groups which are easy to oxidize in the wastewater are oxidized on the anode 1, and organic substances difficult to oxidize and stable chemical bonds are oxidized and broken on the anode 2 to form micromolecules which are easy to oxidize, so that the wastewater sequentially passes through the anode 1 and the anode 2 which are alternately arranged to be subjected to electrochemical synergistic deep oxidation. The invention has the beneficial effects that through synergistic oxidation of the double-potential anodes which are arranged in a staggered manner, the current efficiency is high, the energy consumption is low, and the device has a remarkable application value in the fields of electrochemical water treatment and electrochemical organic synthesis.

Description

technical field [0001] The invention relates to the fields of electrochemical water treatment and electrochemical anodic oxidation, in particular to a bipotential anode electrolysis device and method. Background technique [0002] Electrochemical anodic oxidation is an effective means to degrade organic pollutants in water and remove COD, and it is also an excellent method to realize electrolytic synthesis. Electrochemical anodic oxidation mainly controls the progress of the reaction by adjusting the electrode potential level and the gain and loss of electrons, avoiding the use of a large number of chemical oxidants and reducing by-products. When used in water treatment, the theoretical oxidation potential of different pollutants in the water body is different, and the oxygen evolution overpotential of different electrode materials is also different. It is generally believed that in order to realize the deep oxidation of pollutants, it is necessary to use electrode material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F101/30
CPCC02F1/46104C02F1/46109C02F2101/30
Inventor 唐阳白智群万平玉杨晓进刘佳陈咏梅
Owner BEIJING UNIV OF CHEM TECH
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