Processing method for malodorous gas of chemical area sewage plant

A technology for malodorous gas and sewage treatment plants, which is applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., and can solve the problems of secondary pollutants and high operation and maintenance costs.

Inactive Publication Date: 2014-08-27
SHANGHAI CHEM IND PARK SINO FRENCH WATERDEV
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Problems solved by technology

The combustion method is a method of degrading flammable odorous substances through strong oxidation reactions, and is suitable for the treatment of high-concentr

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  • Processing method for malodorous gas of chemical area sewage plant

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Embodiment Construction

[0016] this invention figure 1 The reference signs in are as follows: 1—NaOH concentrated liquid; 2—NaClO concentrated liquid; 3—distributed control system; 4—control valve; 5—pH and sulfide detector; 6—NaOH and NaClO Solution storage tank; 7—Washing tower; 8—Biological filter tower; 9—Nutrient solution storage tank; 10—Solenoid valve; 11—Absorptive device. The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] see figure 1 As shown, the method for treating malodorous gas from sewage plants in chemical industry areas of the present invention mainly includes chemical absorption, biological oxidation, and adsorption steps, all of which are carried out at normal pressure and at a temperature of 0-40°C.

[0018] The chemical absorption step includes entering the malodorous gas from the sewage plant in the chemical area into the chemical scrubber, and contacting the scrubbing liquid ...

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Abstract

The invention discloses a processing method for a malodorous gas of a chemical area sewage plant, and particularly relates to a chemical absorption-biological oxidation-absorption combined processing method. The malodorous gas enters a chemical washing tower, is subjected to absorption, oxidation and humidification in the washing tower, then enters a biological filter tower, contacts with microbe inoculated on filler surfaces, then enters an absorption device after being degraded by the microbe, and is discharged after being further purified by an adsorbent. An empty bed residence time of the gas in the biological tower is 10-120 s; and an empty bed residence time of the gas in the absorption device is 0.5-120 s. A nutrition liquid needed by the microbe in the biological filter tower is effluent of a secondary sedimentation tank of a sewage treatment plant or diluted raw water of a buffer and homogenization tank. The chemical absorption-biological oxidation-absorption combined processing method can remove hydrogen sulfide and volatile organic compounds from the malodorous gas of the chemical area sewage plant efficiently and realizes standard discharge. The method has the advantages of simple process flow, simple operations, low investment and operation cost, high processing efficiency and no secondary pollution.

Description

technical field [0001] The invention belongs to the field of waste gas treatment, and in particular relates to a chemical absorption-biodegradation-adsorption treatment method for malodorous gas from sewage plants in chemical industry areas. Background technique [0002] With the development of industrialization and the construction of the chemical industry zone, the sewage treatment plant is an indispensable unit of the chemical industry zone. The sewage received by the chemical zone sewage plant is a collection of various types of wastewater, which aggregates various toxic and harmful pollutants. Volatile chemical substances such as hydrogen sulfide and volatile organic compounds are easy to volatilize into the gas and cause foul smell. This foul smelling gas not only brings sensory discomfort, but also affects the human respiratory system, circulatory system, digestive system, endocrine system, mucous membrane, etc. cause harm, and have a serious impact on the surrounding...

Claims

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Application Information

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IPC IPC(8): B01D53/75B01D53/02
Inventor 慈晓琳王乔员帅波瞿贤王晓青赵延飞康健灵
Owner SHANGHAI CHEM IND PARK SINO FRENCH WATERDEV
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