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Technology for removing SO2 and NOx in industrial waste gas

A technology for industrial waste gas and removal, which is applied in the field of environmental treatment to achieve the effects of solving secondary pollution, reducing operating costs and improving removal efficiency

Inactive Publication Date: 2017-06-20
TIANJIN CITY CENTSTAGE TECH INCUBATOR COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention adopts biological method to remove SO in industrial waste 2 and NO X Simultaneously remove together, reduce operating costs, improve removal efficiency, solve the secondary pollution problem existing in conventional physical and chemical methods, and meet environmental protection emission requirements

Method used

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  • Technology for removing SO2 and NOx in industrial waste gas

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Embodiment Construction

[0018] Ceramic or polypropylene plastic packing is used in the column of the present invention. The filler in the biological trickling filter tower of the present invention is required to be an inert material with large porosity, large specific surface area, rough surface, high strength, low density, capable of retaining more water and resistant to acid and alkali corrosion. Therefore, it is easy to use porous ceramics, silicate materials, sponges, activated carbon and its fibers, fibrous porous plastics, polymer materials, etc.

[0019] The device of the present invention is as attached figure 1 shown. The biological trickling filter tower is made of glass, or there are intermittent glass windows on the top, middle and bottom of the tower body, and a closed reactor connected to the liquid storage tank at the bottom. The diameter of the tower is designed according to the amount of air intake, and the height of the tower is designed according to the air velocity of the gas in...

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Abstract

The invention discloses a technology of using a microbial nutrient solution to remove SO2 and NOx in industrial waste gas. The microbial strains are sulfate reducing bacteria and thiobacillus denitrificans. During the process of simultaneous removal of sulfur and nitrogen in industrial waste gas, sulfate reducing bacteria absorb and convert SO2 gas into sulfides and H2S; and thiobacillus denitrificans takes sulfides and H2S as the electron donors and NO2<->, which is generated through hydrolysis of NOx, as the electron acceptor to carry out biochemical reactions to generate simple substance sulfur and nitrogen gas. At the same time, NO gas is converted into nitrogen gas and removed by thiobacillus denitrificans after the addition of thiosulfate.

Description

technical field [0001] The invention relates to a method for removing SO in industrial waste gas by utilizing microbial nutrient solution 2 and NO X The process belongs to the field of environmental governance. Background technique [0002] SO 2 and NO X It is the most serious pollutant in air pollution and the culprit of acid rain. With the rapid development of the world economy, the discharge of industrial waste gas is increasing day by day, and the problem of air pollution is becoming more and more serious. The desulfurization and denitrification of industrial waste gas has become the primary task of air pollution control. At present, the domestic and foreign waste gas desulfurization and denitrification methods mainly include: (1) Plasma method: This method has been industrialized on a large scale, but using ammonia as an absorbent causes waste because ammonia is easy to volatilize, and produces exhaust pollution; ( 2) Dry catalytic method: mainly CuO catalytic meth...

Claims

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Application Information

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IPC IPC(8): B01D53/84B01D53/60
CPCB01D53/60B01D53/84B01D2256/10B01D2257/302B01D2257/304B01D2257/40B01D2257/404Y02A50/20
Inventor 王振华
Owner TIANJIN CITY CENTSTAGE TECH INCUBATOR COMPANY