Device and method for treating hard-to-degrade organic waste water by combined treatment of Ag3PO4/TiO2 catalyst and low-temperature plasma

Abstract

The invention discloses a device and a method for treating hard-to-degrade organic waste water by combined treatment of the Ag3PO4 / TiO2 catalyst and low-temperature plasma. The device for treating hard-to-degrade organic waste water comprises a round flat-type dielectric barrier discharge reaction device and a circular buffering container. The round flat-type dielectric barrier discharge reaction device comprises a high-voltage electrode and a grounding electrode which are connected with a positive electrode and a negative electrode of an alternating current high voltage power supply respectively and are arranged to be opposite to each other up and down. A quartz medium plate and a round reaction vessel are arranged between the high voltage electrode and the grounding electrode. The water inlet and the water outlet of the round reaction vessel are communicated with the circular buffering container through peristaltic pumps and a waste water circulation pipeline is formed. The Ag3PO4 / TiO2 catalysts are uniformly distributed at the bottom of the round reaction vessel. The provided device is simple and practicable, a lot of visible light and ultraviolet light generated by dielectric barrier discharge can be utilized fully, light loss is avoided, the dielectric barrier discharge degradation efficiency can be raised greatly, the device investment is low, and the universality is strong.

Description

technical field [0001] The invention belongs to the field of biochemically degradable organic wastewater treatment, in particular to an Ag 3 PO 4 / TiO 2 The invention relates to a device for jointly treating organic waste water refractory to biochemical degradation with a catalyst and low-temperature plasma, and a method for treating waste water using the device. Background technique [0002] Refractory biodegradable organic wastewater refers to organic matter (including some metabolites of organic matter) that is decomposed by microorganisms at a slow rate and incompletely in the wastewater. Such pollutants are easy to accumulate in organisms and become potential water bodies. source of pollution. Such pollutants include polycyclic aromatic hydrocarbons, halogenated hydrocarbons, heterocyclic compounds, organic compounds, organophosphorus pesticides, surfactants, organic dyes and other toxic and refractory organic pollutants. The common characteristics of these substanc...

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Problems solved by technology

[0004] The object of the present invention is to utilize dielectric barrier discharge plasma synergy Ag 3 PO 4 / TiO 2 Catalyst technology to achieve efficient removal of organic matter in organic wastewater that is difficult to biodegrade, and at the same time provides an Ag 3 PO 4 / TiO 2 A device and method for combined treatment of refractory biodegradable organic waste water with catalyst and low-temperature plasma, in order to solve or alleviate the problem of water pollution caused by refractory organic matter, reduce the light loss of dielectric barrier discharge, and improve the degradation efficiency of dielectric barrier discharge devices

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