Process and device for electric cracking catalytic oxidation for petroleum drilling wastewater

Abstract

The invention discloses a process for electric cracking catalytic oxidation for petroleum drilling wastewater. The process comprises an electric cracking catalytic oxidation-reduction procedure, wherein the electric cracking catalytic oxidation-reduction procedure is performed in a high-pressure sealing reaction tank, and the pressure in the sealing reaction tank is 0.2-0.5 Mpa. The invention further discloses a device for electric cracking catalytic oxidation for petroleum drilling wastewater. The device comprises the sealing reaction tank, an electrolytic bath and an electrode plate, wherein the electrode plate in the electrolytic bath comprises a titanium-based coating electrode plate; the electrolytic bath is formed in the lower part in the sealing reaction tank, and a concrete layer is arranged between the electrolytic bath and the sealing reaction tank; a copper wiring terminal with an outer end stretching out of the sealing reaction tank is arranged in the concrete layer, and the inner end of the copper wiring terminal is connected with the titanium-based coating electrode plate via a graphite wiring terminal and an inert metal wiring terminal; and a water inlet and a compressed air inlet are formed in the top of the sealing reaction tank. According to the process and the device disclosed by the invention, a process of pressurizing to dissolve air at first, and then electrolyzing is performed, and the negative titanium-based coating electrode plate is adopted, so that the effluent quality is remarkably improved.

Description

technical field [0001] The invention relates to a process and device for treating petroleum drilling wastewater, in particular to a process and device for electrolysis and catalytic oxidation of petroleum drilling wastewater. Background technique [0002] At present, environmental pollution, resource shortage and other problems are becoming more and more serious, which have threatened the environment we depend on for survival. Taking environmentally friendly development and adhering to the road of sustainable development has become the main theme of human development. Wastewater treatment and discharge are an important part of the environment-friendly production model. Part of it has received increasing attention. With the development of various industries such as chemical industry, medical treatment, and manufacturing industry, the types of production sewage and the difficulty of treatment have also increased significantly. With the deepening of research, a large number of...

AI Technical Summary

Problems solved by technology

[0009] The traditional electrolysis process generally includes a gel breaking process, a centrifugal separation process, an electrolysis catalytic redox process, and a filtration process. Hydroxyl radicals, atomic oxygen, etc. form a large amount of molecular oxygen overflow, the oxidation ability is weak, there are disadvantages of poor effluent quality, long residence time in the electrolysis process, large equipment volume, large investment and high energy consumption

Images