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Technique of electrolytic oxidation for treating waste water of containing phenol

A technology of electrolytic oxidation and treatment process, applied in the directions of oxidized water/sewage treatment, water/sewage treatment, water/sludge/sewage treatment, etc. problems, to achieve the effect of small size of equipment, major market development prospects, and small grain size

Inactive Publication Date: 2005-03-30
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oxidation process of phenolic organic matter on this type of electrode material is accompanied by oxygen evolution reaction and hydrogen evolution reaction, which reduces the oxidation potential and current efficiency, and the energy consumption per unit of wastewater COD treatment is high, which affects the implementation effect

Method used

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  • Technique of electrolytic oxidation for treating waste water of containing phenol
  • Technique of electrolytic oxidation for treating waste water of containing phenol
  • Technique of electrolytic oxidation for treating waste water of containing phenol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The embodiment and working principle of the present invention are: non-stirring, internal circulation, double synergistic electrolytic oxidation treatment process for wastewater containing phenol 12.1mg / L and 24.7mg / L, using polypropylene plate and frame electrolytic cell, using Ti-based PbO 2 The catalytic electrode is the anode, the stainless steel is the cathode, and the phenol-containing wastewater is the electrolyte. By electrolyzing the water in it, a strong oxidizing group is generated at the anode—hydroxyl radical·OH, and the cathode obtains electrons to generate H. 2 o 2 , the synergistic effect of the negative and positive poles realizes the deep oxidation and decomposition of phenol pollutants, so as to achieve the purpose of electrolytic oxidation treatment of phenol-containing wastewater; among them, the number of anode plates is 1, and the number of cathode plates is 2. The anodes and cathodes are arranged alternately and adjacent to each other. The distan...

Embodiment 2

[0032] The embodiment and working principle of the present invention are: other conditions are the same as above, the number of anode plates is 2, the number of cathode plates is 3, the anodes and cathodes are arranged alternately, the distance between adjacent plates is 20mm, and the effective plate area of ​​the anode and the cathode is 2400cm 2 , the electrolytic power supply adopts a steady current DC power supply, and the current density is 30mA / cm 2 , the hydraulic retention time in the electrolyzer is 60min, and the wastewater treatment results are shown in Table 2.

[0033] The anode reaction is:

[0034]

[0035] The cathode reaction is:

[0036]

[0037] The oxidative decomposition reaction of phenol is:

[0038]

[0039]

[0040] The results in Table 2 show that the electrolytic oxidation wastewater treatment process of the present invention can effectively treat phenol-containing wastewater, and the removal rate of volatile phenols is 92...

Embodiment 3

[0045] The embodiment and working principle of the present invention are as follows: non-stirred, internal circulation, double synergistic electrolytic oxidation treatment process for wastewater containing 12.1mg / L phenol, adopts polypropylene plate and frame electrolytic cell, and uses Ti-based PbO 2 The catalytic electrode is the anode, the stainless steel is the cathode, and the phenol-containing wastewater is the electrolyte. By electrolyzing the water in it, a strong oxidizing group is generated at the anode—hydroxyl radical·OH, and the cathode obtains electrons to generate H. 2 o 2 , the synergistic effect of the negative and positive poles realizes the deep oxidation and decomposition of phenol pollutants, so as to achieve the purpose of electrolytic oxidation treatment of phenol-containing wastewater; among them, the number of anode plates is 1 and 2, and the number of cathode plates is 2 and 3 respectively. block, the anode and cathode are arranged alternately, the di...

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Abstract

The invention relates to stirringless, internal circulating and double coordinating electrolyzing oxide treatment technology for organic waste water which is difficult to be degradated, particularly for the waste water containing phenol. Internal circulating plate frame electrolytic tank is used, Ti group PbO2 electrode is used as positive pole, stainless steel is negative pole, waste water containing phenol is used as electrolyte to discharge and generate strong oxide group-hydroxyl free radical on positive pole, negative pole get electron to form H2O2, negative and positive poles are coordinated action to realize deep oxide decomposing to phenol pollutant, and then to achieve the goal of treating waste water containing phenol.

Description

technical field [0001] The invention belongs to a non-stirring, internal circulation, double synergistic electrolytic oxidation treatment process for refractory organic wastewater in environmental electrochemistry, especially an electrolytic oxidation treatment process for phenol-containing wastewater, which is suitable for the treatment occasion of phenol-containing wastewater. Background technique [0002] With the rapid development of industrialization, especially the chemical industry, the types of artificially synthesized organic substances are increasing day by day. Although the material world of human society has been greatly enriched, the by-products-environmental pollution is also becoming more and more serious, especially petrochemical and organic matter. The organic wastewater (such as phenol) produced in the synthesis often has the characteristics of "three causes" (carcinogenic, teratogenic, and sudden) and poses a serious threat to human health and survival. Ac...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/72
Inventor 王家德马淳安甘永平吕伯升陈建孟
Owner ZHEJIANG UNIV OF TECH
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