Photoelectrocatalysis/Fenton coupling processing system and processing method of high-salt polymer-containing wastewater

Abstract

The invention relates to a photoelectrocatalysis / Fenton coupling processing system of high-salt polymer-containing wastewater. The system comprises an electrolyzing device and a photoelectrocatalysis / Fenton reaction device, wherein the electrolyzing device is used for carrying out quick demulsification and separation on the high-salt polymer-containing wastewater under the effect of an electric field to obtain a subnatant; introducing a photoelectric Fenton reaction into a photoelectrocatalysis system by the photoelectrocatalysis / Fenton reaction device, and carrying out further improvement on a photoelectric catalyst, so that the TiO2 photoelectrocatalysis reaction is combined with the photoelectric Fenton reaction, the catalytic efficiency of a photoelectric integrated device is improved, the system is combined with an electrolytic demulsification technology of the electrolytic device, and deep processing on the high-salt polymer-containing wastewater is realized. The invention also provides a deep processing method of the high-salt polymer-containing wastewater, quick demulsification is firstly carried out on the wastewater through electrolytic preprocessing to remove a majority of oils, and then remaining pollutants are removed through a photoelectrocatalysis / Fenton coupling processing device, so that up-to-standard release of the polymer-containing wastewater is realized.

Description

technical field [0001] The invention relates to the technical field of high-salt and poly-containing wastewater treatment, in particular to a photoelectric catalysis / Fenton coupling treatment system and an advanced treatment method for high-salt and poly-containing wastewater. Background technique [0002] Polymer flooding technology, as one of the main technologies for increasing crude oil production, has been applied in domestic oil fields, but the COD-containing wastewater produced by it has a wide range of sources and complex components, and the water contains phenol, naphthenes, polycyclic aromatic hydrocarbons, etc., which are not easy to be degraded by microorganisms Crude oil components, and various chemicals (including demulsifiers, defoamers, corrosion inhibitors, scale inhibitors, etc.) great. At present, the combined process of "physicochemical + biochemical" is generally used in the treatment of polymer-containing wastewater in oilfields at home and abroad. How...

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Problems solved by technology

One class is based on TiO 2 Photoelectrocatalysis of photoanodes, TiO 2 The loaded electrode acts as an anode and a photocatalyst, but its disadvantage is that the contact area between the catalyst and pollutants is limited

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