Malodorous gas comprehensive treatment device

Abstract

The invention discloses a malodorous gas comprehensive treatment device. The device comprises an alkali washing section tank arranged, an acid washing section tank, a biological purification section tank, an adsorption purification section tank and a photocatalytic oxidation section tank side by side. Adjacent tanks are separated by means of a partition with channels. The above units are connectedin series by means of the channels on the partition. The alkali washing section tank and the photocatalytic oxidation section tank are respectively connected with an air inlet and an air outlet. Spray washing components for performing alkaline spray washing and acid spray washing are arranged inside the alkali washing section tank and the acid washing section tank, respectively. A biological purification module is arranged in the biological purification section tank for purifying the malodorous gas. An adsorption purification module for adsorbing malodorous gas is arranged inside the adsorption purification section tank. A photocatalytic module for catalytically oxidizing the malodorous gas is provided inside the photocatalytic oxidation section tank. The malodorous gas comprehensive treatment device provided by the invention has a high purification efficiency, not only the working environment of a worker is improved, the physical and mental health of an operator is guaranteed, but also the overall occupied area of the device is small, and the maintenance and replacement are convenient.

Description

technical field [0001] The invention belongs to the field of industrial waste gas purification, and in particular relates to a comprehensive treatment device for malodorous gas. Background technique [0002] Malodorous gases refer to all gaseous substances that stimulate the olfactory organs, cause people's unpleasantness and damage the living environment. The source of malodorous gas is extensive, and industrial production, municipal sewage, sludge treatment, garbage disposal and disposal facilities of sick and dead livestock are the main sources of malodorous gas. The malodorous gas is mainly produced in the sewage pumping station, water inlet grille, gas desilting tank, primary sedimentation tank, etc. during the sewage treatment process, and in the sludge concentration, dehydration and drying, transfer, etc. Composting, landfill, incineration, transshipment, etc. during the treatment process. There are many kinds of malodorous gases, which can be divided into: ① nitrog...

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Problems solved by technology

[0004] Physical deodorization methods mainly include water absorption method, adsorption method, masking method and dilution diffusion method, etc. The physical method has the advantages of simple principle, convenient operation and quick effect, but the physical method is only suitable for low concentration, small range, easily soluble The malodorous substances in the water, either did not remove the malodorous components fundamentally, but only temporarily covered the odor, and improper treatment could easily cause secondary pollution, and the purification efficiency was very limited

[0005] Chemical deodorization methods mainly include chemical washing method, catalytic combustion method, thermal combustion method, oxidation method, photocatalytic oxidation method, etc. Chemical deodorization method is mature in technology, high in deodorization efficiency and safe and reliable, and can completely remove odorous substances, but The equipment used is various and the process is complicated, the energy consumption is large, and the cost is high. It is mainly used in the treatment of high-concentration industrial odor

[0006] The biological method has the advantages of high treatment efficiency, no secondary pollution, good safety, simple equipment required, easy operation, low cost, and convenient management and maintenance. It has been widely used in landfills, sewage treatment plants, animal husbandry, etc. , metallurgy, petrochemical and other industries, but due to the large area of ​​biological treatment equipment, its application is subject to certain restrictions

[0007] The Chinese patent document with the application number of 201721401464.9 discloses a new type of biological deodorization system for sewage plants, which adopts a vertical structure including acid treatment unit, alkali treatment unit, adsorption treatment unit, microbial treatment unit and light and microwave treatment unit, which are sequentially installed in the sewage plant. The odor is treated with acid and alkali to remove particles, alkaline substances, and acidic substances, and then the odor is efficiently adsorbed by activated carbon, lignite adsorbent and functional fiber adsorbent, and then the odor is decomposed by microorganisms through the microbial treatment unit At last, the UV tube and laser tube in the optical microwave processing unit degrade the organic matter in the odor into non-toxic and harmless small molecules, which also play a role in sterilization, through a combination of various deodorization means Use to improve the governance effect of odor, but this technical solution has the problem that the various units are easy to flow and interfere with each other

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