External circulation type electrochemical sewage treatment plant deodorizing system and method

Abstract

The invention discloses an external circulation type electrochemical sewage treatment plant deodorization system. The system comprises an odor tank (1), a gas-collecting hood (2), an induced draft fan(3), an absorption reaction tower (4), an electrochemical oxidation unit (5) and a power supply control system (6); a treating method comprises the steps that firstly odor is collected by the gas-collecting hood (2), and then induced into the absorption reaction tower (4) by the induced draft fan (3); an odor absorption zone (406), a baffling mixing zone (407), a regeneration reaction zone (408),a precipitation zone (409) and absorption liquid (410) are arranged inside the odor absorption zone (4); the odor is fully absorbed in the absorption liquid (410), and final oxidation of the odor andregeneration of the adsorption liquid are achieved in the electrochemical oxidation unit (5); sediment and concentrated liquid generated by the absorption reaction tower (4) are periodically discharged from a discharge port (402) and the odor is treated by the absorption liquid and discharged from an air outlet (404). According to the external circulation type electrochemical sewage treatment plant deodorizing system and the method, oxidative removal of odor pollutant components and recycling regeneration of the absorption liquid are simultaneously achieved, thereby saving operating costs.

Description

technical field [0001] The invention belongs to the field of environmental engineering waste gas treatment, and relates to a sewage treatment plant odor treatment technology, in particular to an external circulation type electrochemical sewage treatment plant deodorization system and method. Background technique [0002] In recent years, with the continuous improvement of my country's urbanization and industrialization level, my country's sewage treatment application technology has made significant progress and has been widely used in various industries, but in the actual operation process, the odor generated by sewage treatment structures and ancillary equipment It has caused great problems to the health of people around the sewage treatment plant and the urban environment. In general, because sewage contains a large amount of organic matter, especially for petroleum refining, fine chemical and other wastewater, its production wastewater often contains a large amount of orga...

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Problems solved by technology

Among them, the chemical agent oxidation method needs to continuously add oxidants to suppress the generation of odor, or absorb and oxidize the odor generated by chemical agents. Although this process is easier to control, it is generally used to deal with low concentration odor and the absorption liquid requires Secondary treatment is likely to cause secondary pollution; the adsorption method generally uses multi-porosity active substances, such as activated carbon, to adsorb and remove odorous gases. Sewage treatment facilities or equipment that generate a large amount of odor. In addition, the adsorption method involves processes such as adsorbent replacement and regeneration. The process is relatively complicated and the subsequent maintenance is frequent; biological deodorization is widely used. Filters remove odorous pollutants through biodegradation, but in view of the growth characteristics of microorganisms and environmental requirements, the process is easily affected by the external environment, and the absorption capacity is small, the removal efficiency is low, the floor area is large, and daily maintenance is relatively frequent

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