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Complex effluvium waste gas purifying method

A waste gas and odor technology, applied in the field of waste gas treatment, can solve the problems of high cost and achieve the effects of low cost, strong water holding capacity and simple process

Active Publication Date: 2008-03-12
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the dehydration unit is added in the process, and the cost is relatively high

Method used

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  • Complex effluvium waste gas purifying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of complex malodorous gas comes from flotation tanks, sedimentation tanks, and sludge storage tanks. The malodorous gas often discharged contains cyclopentane; 2-methylpentane; 3-methylpentane; n-hexane; cyclohexane ; n-heptane; methylcyclohexane; 2-methylheptane; n-octane; C 8 Naphthene; C 9 ;n-butane; isopentane; carbopentane; n-pentane; carbohexaene; methylcyclopentane; 2-methylhexane; The above are collectively referred to as hydrocarbons with a content of 1 to 80g / m 3 .h, Alcohol 0~5g / m 3 .h, ester 0~6g / m 3 .h, ketones 0~10g / m 3 .h, aromatic 0~70g / m 3 .h, Nitrile 0~15g / m 3 .h, halide 0~6g / m 3 .h, hydrogen sulfide 0~10g / m 3 .h, organic sulfur 0~6g / m 3 .h is processed by biological filtration process.

[0024] The filler of the packing tower is a mixture of bark, animal manure compost and volcanic rock, and its mixing weight ratio is bark: compost: volcanic rock=1: 0.4: 0.2, and the packing tower has a 3-layer structure, and the thickness of each lay...

Embodiment 2

[0030]The malodorous gas originates from coarse screens, grit chambers, regulating tanks, flotation tanks, aeration tanks, grease traps, sedimentation tanks, sludge storage tanks, and dehydration machine rooms, and the malodorous gas often discharged contains cyclopentane; 2 -Methylpentane; 3-methylpentane; n-hexane; cyclohexane; n-heptane; methylcyclohexane; 2-methylheptane; n-octane; C 8 Naphthene; C 9 ;n-butane; isopentane; carbopentane; n-pentane; carbohexaene; methylcyclopentane; 2-methylhexane; ; The above are collectively referred to as hydrocarbons with a content of 0-80g / m 3 .h Alcohols 0~10g / m 3 .h, ester 0~10g / m 3 .h, ketones 0~10g / m 3 .h, aromatic 0~80g / m 3 .h, Nitrile 0~15g / m 3 .h, halide 0~5g / m 3 .h, hydrogen sulfide 0~10g / m 3 .h, organic sulfur 0~6g / m 3 .h is processed by biological filtration process.

[0031] The filler of the packing tower is a mixture of bark, animal manure compost and volcanic rock, and its mixing weight ratio is bark: compost: vo...

Embodiment 3

[0036] The malodorous gas and the operating process are the same as in Example 1, and the operating temperature of the packed tower is 10-20°C. The filler of the packing tower is a mixture of bark, animal manure compost and volcanic rock, and its mixing weight ratio is bark: compost: volcanic rock=1: 0.2: 0.5. The packing tower has a one-layer structure, and the packing thickness is 2 meters. The purified gas meets the first-level emission standard allowed by the state.

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Abstract

A purification method for complicated odor exhaust gas belongs to the exhaust gas control technical field and in detail relates to a method to biologically filter the odor exhaust gas and reach the purpose of exhaust gas purification. The exhaust gas is biologically purified via a packing tower. Packing materials of the packing tower are a mixture of barks, animal manure and lava, the weight mixing rate of which is 1: 0.2-5: 0.01-0.5. The packing tower is a ten-story structure, and packing of each layer is 1-2 meters thick. The packing amount depends on the odor gas treatment amount. The odor exhaust gas is purified through the packing tower in the manner of forward flowing or adverse flowing. The present invention is simple in the technique. The packing materials used are natural materials. The present invention is provided with the strong water holding capability and the low cost. No special germs have to be added. When the method is used to treat the odor gas, no secondary pollution is caused. When an odor gas with the pollutant load of 200g / m3.h is treated, the stay time is 60 seconds. The pollutant removal rate reaches the state emission standard.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and in particular relates to a method for biologically filtering malodorous waste gas by using a packed tower to purify the waste gas. Background technique [0002] (1) Sulfur-containing compounds, such as H 2 S, SO 2 , mercaptans, thioethers; (2) nitrogen-containing compounds, such as amines, amides, indole; (3) halogens and their derivatives such as chlorine, halogenated hydrocarbons; (4) hydrocarbons, including alkanes, alkenes, aromatics ; (5) Oxygen-containing organic substances, including alcohols, aldehydes, phenols, ketones, esters, organic acids, etc., these substances cause odor in the gas. [0003] Stench is a kind of public nuisance with wide influence, which strongly stimulates people's psychology and causes poisoning in severe cases. Its poisoning to the human body is multi-faceted: first, it causes the human body to reflexively inhibit inhalation, hindering the norma...

Claims

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Application Information

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IPC IPC(8): B01D53/84
CPCY02A50/20
Inventor 张春燕全燮杜龙弟耿长君吴丹郝丽胡艳梅梁立伟李向富段亚丽张福鱼贞玉金绍元
Owner PETROCHINA CO LTD
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