Method for synergistically degrading phenol wastewater through electrocatalytic oxidation and electric-Fenton technology

Abstract

The invention provides a method for synergistically degrading phenol wastewater through electrocatalytic oxidation and an electric-Fenton technology. The wastewater is introduced into an electrolyzer of which two sides are provided with a water inlet pipe and a water outlet pipe, Ti / TiO2-NTs / Zr-Sb-SnO2 is taken as an anode, foamed nickel coated FeOOH+active carbon powder+polytetrafluoroethylene (PTFE) is taken as a cathode, the anode and the cathode are connected with a voltage-stabilized source, air is provided through aeration or stirring, OH is generated on the surface of the anode, organic matters are degraded through electrocatalytic oxidation action of the anode, oxygen in the solution generates H2O2 on the surface of the cathode, and the H2O2 and the cathode-loaded FeOOH are subjected to heterogeneous Fenton reaction. The method has the advantages of high degradation efficiency, no addition of chemical reagents, no generation of iron mud, and a wide pH value application range, is suitable for treating the phenol wastewater, can be used for treating multiple kinds of organic wastewater and has a wide application prospect in actual application.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to a method for synergistically degrading phenolic wastewater by utilizing electrocatalytic oxidation and electro-Fenton technology. Background technique [0002] With the continuous development of society and industry, the composition of wastewater is becoming more and more complex, and the content of a large number of toxic, harmful and refractory substances in wastewater is increasing. In environmental pollution control, only relying on traditional pollution prevention and control technologies and means is far away. It is far from meeting the speed of pollutants produced along with the progress of human science and technology and the requirements of human beings for the quality of the living environment. It is necessary to continuously improve existing technologies or find new ways. [0003] Electrocatalytic oxidation is a promising method for the treatment of refractory biodegrad...

AI Technical Summary

Problems solved by technology

The Fenton method in these two technical solutions is through the addition of Fe 2+ All of them belong to the homogeneous Fenton system, which needs to add chemical reagents as the iron source during its operation, and the homogeneous Fenton system has a better effect only under the condition of low pH value, and the applicable range of pH value is narrow, and the actual App is restricted

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