Device and method for treating domestic sewage by natural-light like electro Fenton method

Abstract

The invention relates to a device for treating domestic sewage by a natural-light like electro Fenton method, which comprises a reaction tank, a water inlet, a water outlet, cathode plates, anode plates, a direct-current stabilized power supply, a xenon lamp group, a medicament box, an aeration pipe and an aeration pump; the water inlet is positioned at the bottom of the side surface of the reaction tank, and the water outlet is positioned at the upper part of the side surface of the reaction tank; more than two anode plates and more than two cathode plates are alternately and vertically arranged in the reaction tank at equal intervals, the anode plates are connected with the positive electrode of the direct-current stabilized power supply, and the cathode plates are connected with the negative electrode of the direct-current stabilized power supply; the xenon lamp group is positioned in the reaction tank and above the water outlet; an outlet in the bottom of the medicament box is communicated with the reaction tank through a chemical feeding pipeline, and the aeration pipe is arranged at the bottom of the reaction tank and connected with the aeration pump. According to the invention, an electro-Fenton method is organically combined with a xenon lamp group simulating sunlight, and a flocculating agent is added to further promote degradation of organic pollutants. Compared witha traditional method, the method is high in organic pollutant removal rate.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a device and method for treating domestic sewage similar to the natural photoelectric Fenton method. Background technique [0002] Municipal solid waste disposal is an important part of urban management and environmental protection, an important symbol of social civilization, and is related to the vital interests of the people. In recent years, my country's municipal solid waste collection and transportation network has become more and more perfect. However, due to the rapid development of urbanization, the urban solid waste has surged and the waste treatment capacity is relatively insufficient. Some cities are facing the dilemma of "garbage siege", which seriously affects the urban environment and social stability. During the collection, stacking, transportation, and terminal treatment of domestic waste, the water contained in the waste itself is squeezed ou...

AI Technical Summary

Problems solved by technology

However, in the process of oxidative decomposition of organic pollutants in the electro-Fenton reaction system, H 2 o 2 The generation rate and utilization rate are not high, and some Fe 2+ will be H 2 o 2 Oxidized to Fe 3+ , will interact with degradation intermediates (such as OH - ) form a complex, hindering the Fe 2+ The recycling utilization of OH affects the yield and generation rate of OH, thereby reducing the efficiency of the electro-Fenton method for degrading organic pollutants

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