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Treatment device and treatment method for waste gas exhausted from sewage treatment field

A technology of sewage treatment plant and treatment device, which is applied in the direction of combination device, separation method, chemical instrument and method, etc., can solve the problems of unstable operation and large scale of adsorption device, and achieve the effect of avoiding bed blockage and failure.

Active Publication Date: 2013-04-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to be combined with the catalytic combustion treatment of other high-concentration organic waste gases, and the adsorption device has the disadvantages of large scale and unstable operation.

Method used

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  • Treatment device and treatment method for waste gas exhausted from sewage treatment field
  • Treatment device and treatment method for waste gas exhausted from sewage treatment field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 10mg / m sulfide in the fugitive exhaust gas from the activated sludge aeration tank of the sewage treatment plant of an oil refinery 3 About, hydrocarbons 10~180 mg / m 3 About (the normal value is 30mg / m 3 Below, it will reach 150 mg / m under abnormal working conditions 3 around), gas volume is 5000Nm 3 / h or so. After the aeration tank is sealed with a cover, use such as figure 1 Devices shown are processed.

[0023]The desulfurization agent used in the desulfurization section is a spherical desulfurization product (prepared according to the method described in CN200810112428.X) with amorphous polyoxyhydroxide as the main component and special additives added. The volumetric space velocity of the desulfurization section is 1500 h -1 .

[0024] The hydrocarbon concentration homogenizing agent used in the hydrocarbon concentration homogenization section is activated carbon prepared from high-quality carbon raw materials with certain binders and additives, which are sc...

Embodiment 2

[0028] A petrochemical sewage treatment plant has 4 biochemical aeration tanks to discharge waste gas. After the 4 aeration tanks are covered and closed for treatment, the waste gas is led out and collected for use such as figure 1 The device shown in the treatment, the sulfide in the exhaust gas is 10mg / m 3 The concentration of hydrocarbons is generally 10~200 mg / m 3 (normal value is 50mg / m 3 Below, it will reach 180 mg / m under abnormal working conditions 3 about).

[0029] The desulfurization section uses iron oxyhydroxide desulfurizer (prepared according to the method described in CN200810112428.X Example 1), and the volumetric space velocity of the desulfurization section is 1800 h -1 .

[0030] The hydrocarbon concentration homogenizing agent used in the hydrocarbon concentration homogenization section is activated carbon prepared from high-quality carbon raw materials with certain binders and additives, which are screened, formed, carbonized, activated, impregnated, ...

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Abstract

The invention discloses a treatment device and a treatment method for waste gas exhausted from a sewage treatment field. The treatment device comprises a waste gas treatment tower, wherein a demisting section is arranged at the lower part of the tower, a desulfurization section and a hydrocarbon concentration homogenization section are sequentially arranged at the upper part of the tower from bottom to top, a partition board is arranged between the desulfurization section and the demisting section, a gas leading-out port is formed in a tower body between the upper part of the demisting section and the partition board, a gas leading-in port is formed in the tower body between the lower part of the desulfurization section and the partition board, and a gas conveying device is arranged between the gas leading-out port and the gas leading-in port; the demisting section comprises an upper filler demisting layer and a lower vortex sheet distributor at the lower part of the filler demisting layer; and the desulfurization section is filled with a desulfurizer, and the hydrocarbon concentration homogenization section is filled with a hydrocarbon concentration homogenization agent. The waste gas treatment method uses the waste gas treatment device disclosed by the invention. The waste gas treatment device and the waste gas treatment method disclosed by the invention have the advantages of the treatment efficiency is high, operation of the device is stabe, operation conditions are mild and simple and the like, so that the device and the method are suitable for purification treatment of the waste gas exhausted from various biochemical aeration type sewage treatment fields.

Description

technical field [0001] The invention relates to a treatment device for waste gas discharged from a sewage treatment field and sewage treatment, in particular to a treatment device for waste gas discharged from a biochemical aeration sewage treatment device and a treatment method for the waste gas. Background technique [0002] Sewage treatment plants are important sewage treatment facilities in oil refineries and municipal facilities. Biochemical treatment technology has the advantages of low cost and good treatment effect, and is an important step in sewage treatment. Among them, aerobic biochemical treatment requires a large amount of air to be introduced into the sewage, coupled with the evaporation of sewage and other reasons, causing sewage treatment plants to discharge a large amount of water into the atmosphere. exhaust gas. This kind of exhaust gas has a large amount of gas but the concentration of harmful components is low. Under normal circumstances, the concentra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/82B01D53/48B01D50/00
Inventor 赵磊方向晨王新刘忠生
Owner CHINA PETROLEUM & CHEM CORP