Method for processing refractory wastewater by three-dimensional electrode coupled with oxidant

A three-dimensional electrode and oxidant technology, which is applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., can solve the problem that the degradation efficiency and degradation effect of pollutants need to be improved, increase the cost of wastewater treatment, and the types and quantities are limited To achieve the effect of improving the efficiency of wastewater treatment, reducing the difficulty of mud-water separation and reducing the difficulty of treatment
CN108928890AActive Publication Date: 2018-12-04SICHUAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN UNIV
Publication Date
2018-12-04

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Abstract

The invention belongs to the field of refractory wastewater treatment, and provides a method for processing refractory wastewater by a three-dimensional electrode coupled with an oxidant. The method comprises the following operation: adding the refractory wastewater with a pH value of 3-11 to be processed into a wastewater processing container provided with a slab anode and a slab cathode, addingthe oxidant and a particle electrode into the wastewater processing container, performing stirring to make the particle electrode in a fluidized state, starting a direct-current power supply connectedwith the slab anode and the slab cathode, and performing treatment for 15-60 min under the condition of a current density of 2-20 mA / cm<2> to complete the treatment of the refractory wastewater, wherein the particle electrode is magnetic spinel type ferrite MFe2O4 nanoparticles, and the oxidant is at least one selected from the group consisting of a persulfate, hydrogen peroxide and ozone. The method provided by the invention can effectively improve the degradation efficiency and degradation effect of the refractory wastewater while reducing the treatment costs of the wastewater.
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Description

Technical field

[0001] The invention belongs to the field of treatment of refractory wastewater, and relates to a method for treating refractory wastewater with a three-dimensional electrode coupled with an oxidant. Background technique

[0002] Some wastewater discharged from industrial production processes usually contains a large amount of harmful and very difficult to degrade organic pollutants. Not only that, but water pollution caused by some new pollutants such as herbicide pesticides and antibiotic drugs is also an important environmental problem. Traditional biological treatment, heat treatment, adsorption, physical and chemical treatment methods and membrane treatment methods have been applied to remove these refractory organic pollutants. However, some technical defects have appeared in the actual application process, such as long reaction time and refractory pollution. The treatment effect of waste is not obvious, and the secondary pollution is serious.

[0003] Advan...

Claims

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