Electrochemical high-grade oxidation apparatus

Abstract

The invention relates to an electrochemical high-grade oxidation apparatus, which belongs to the field of sewage processing. The high-grade oxidation apparatus comprises a front security filter, an adjusting water storage tank, DC stabilized power supply, a high-grade oxidation pool, an electrode, a waste water internal circulation system, and an air floatation defoaming zone. the electrode is positioned in the high-grade oxidation pool, the upper end of the high-grade oxidation pool is the air floatation defoaming zone; an anode of the electrode is the microporous tubular-type active electrochemical membrane anode; an anode matrix is the microporous titanium black ceramic tube, the active electrocatalysis layers are arranged on the surface of the matrix and in the micropore, the active electrocatalysis layer is a mixing layer of IrO2, Ti4O7 and SnO2; one end of the electrode anode ceramic tube is taken as a water inlet, and the other end is enclosed; and the waste water internal circulation system is taken as the water inlet of the electrode anode and is communicated with an internal circulation water outlet of the oxidation pool at the side surface of the high-grade oxidation pool corresponding to an anode enclosed end through a pipeline and an internal circulation booster pump. The electrochemical high-grade oxidation apparatus has the characteristics of little electrode amount, strong mass transfer capability, high degradation efficiency and low processing cost.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to an electrochemical advanced oxidation device, especially for treating refractory organic waste water. Background technique [0002] With the rapid development of my country's industry, the amount of sewage discharge is increasing day by day, and a large number of chemicals that are difficult to biodegrade are discharged into the environment in the form of waste water, resulting in increasingly serious water pollution, which has become one of the important factors restricting economic development and endangering public interests. In particular, sewage discharged from industrial production processes such as coking, printing and dyeing, pharmaceuticals, coal chemical industry, organic synthesis and papermaking, and late seepage fluid from landfills have complex components, high concentrations, high toxicity, difficult biochemical degradation, and great difficulty in treatment. It is ...

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Problems solved by technology

Most of the existing electrode materials have either limited electrocatalytic activity or short lifespan; plate electrodes have small specific surface area, few active sites, and poor mass transfer effect; although mesh electrodes have improved specific surface area and mass transfer, their The energy consumption is still high, which still cannot meet the actual needs; the three-dimensional particle electrode has a large specific surface area, but its structure is loose, the conductivity is not good, and the current efficiency is low; therefore, it is urgent to develop electrode materials with high electrocatalytic activity and Optimizing the reactor structure to meet the requirements of electrochemical advanced oxidation technology for wastewater treatment

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