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Treatment system and method for odor gas containing high-concentration hydrogen sulfide

A technology with high hydrogen sulfide content and treatment method, which is applied in the field of odor treatment to achieve the effects of strong operability, reducing the risk of bacterial contamination, and simplifying the process flow

Inactive Publication Date: 2020-02-04
雅邦绿色过程与新材料研究院南京有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there are certain problems in the current common processes for the treatment of odors containing high concentrations of hydrogen sulfide.

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  • Treatment system and method for odor gas containing high-concentration hydrogen sulfide

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[0034] Odor volume is 10,000 m3 / h, hydrogen sulfide concentration is 8000ppm, other main components are ammonia, benzene, toluene, xylene, ethylbenzene, styrene, ethyl acetate, butyl acetate, acetone, methyl ethyl ketone , low molecular weight fatty acids, partially halogenated compounds, etc. After the odor passes through a hydrogen sulfide spray tower, the concentration of hydrogen sulfide is lower than 50ppm. After passing through 6 biological trickling filter towers, hydrogen sulfide, ammonia, and soluble VOCs have been completely removed, leaving only a small amount of hydrophobic VOCs. After the odor passes through the chemical oxidation spray tower and water washing tower, it fully meets the exhaust gas emission standard.

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Abstract

The invention provides a treatment system for odor gas containing high-concentration hydrogen sulfide. A bio-scrubbing tower, a bio-trickling filter, a chemical oxidation tower and the like connectedin series are adopted to achieve treatment of the odor gas containing the high-concentration hydrogen sulfide, the process includes the steps that the high-concentration hydrogen sulfide is absorbed by medium-alkaline spray liquid, and oxidized to elemental sulfur by basophilic desulphurizing bacteria; and remaining hydrogen sulfide, ammonia, VOCs and the like are transformed or degraded by microorganisms, and residual odor components are further thoroughly oxidized by sodium hypochlorite. The treatment system has the beneficial effects that a method can withstand the impact of the high concentration hydrogen sulfide, for the odor gas containing the hydrogen sulfide with the concentration between 200 ppm and 50000 ppm, the removal rate of the hydrogen sulfide reaches 99% or above, the deodorization efficiency can reach 99% or above, meanwhile, the process is simple, operability is high, and the investment cost and the operating cost are low.

Description

technical field [0001] The invention relates to the technical field of odor treatment, in particular to a treatment system and method for odor with high hydrogen sulfide content. Background technique [0002] Due to the widespread use of sulfur-containing compounds in industry, sulfur in wastewater often enters the waste gas in the form of hydrogen sulfide. For example, a large amount of hydrogen sulfide will be produced during the treatment of wastewater such as pharmaceuticals, tanning, and fermentation. Especially in order to improve the treatment efficiency of the aerobic section, the hydrolysis and acidification section is often added before to improve the biodegradability of the wastewater. The hydrolysis and acidification section will produce a large amount of hydrogen sulfide gas, and the concentration of hydrogen sulfide can reach more than 1000 ppm, or even 4000-5000 ppm. In addition to hydrogen sulfide, the exhaust gas also includes ammonia, VOCs and other compon...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/44B01D53/52B01D53/58B01D53/75B01D53/78B01D53/84B01D53/96
CPCB01D53/44B01D53/52B01D53/58B01D53/75B01D53/78B01D53/84B01D53/96B01D2251/108B01D2251/304B01D2251/606B01D2257/708Y02A50/20
Inventor 邢建民唐斌宋太沧穆廷桢
Owner 雅邦绿色过程与新材料研究院南京有限公司
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