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Volatile organic compound treatment reaction system and application thereof

A volatile organic compound and reaction system technology, applied in gas treatment, membrane technology, dispersed particle separation, etc., can solve the problems of water-insoluble gas fluctuations, affecting VOCs removal efficiency, and low VOCs concentration, etc., to achieve investment With the effect of low operating cost, increased use frequency, and improved removal efficiency

Pending Publication Date: 2021-07-13
上海沁泰环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under normal circumstances, the circulating washing liquid is mainly water. Therefore, this method is only suitable for VOCs with better water solubility, such as ethanol, ether and other substances with a small Henry coefficient, but for insoluble VOCs, this method is not suitable. Be applicable
[0008] It can be seen that the simple biological process still has a low concentration of VOCs, which is greatly affected by the fluctuation of VOCs, and is greatly affected by the fluctuation of non-water-soluble gases in VOCs, and the proportion of non-water-soluble substances in VOCs is directly affected. VOCs removal efficiency

Method used

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  • Volatile organic compound treatment reaction system and application thereof
  • Volatile organic compound treatment reaction system and application thereof
  • Volatile organic compound treatment reaction system and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0055] This embodiment deals with mixed volatile gases containing toluene, ethanol and acetone. This process is used to remove VOCs, in which ethanol and acetone are VOCs that are easily soluble in water, and toluene is an organic volatile gas that is not easily soluble in water.

[0056] The air inlet is sprayed with sludge and adsorbent, without washing filler, and the water-air ratio of the sludge sprayed by the inlet spray device 13 is 20L / m 3 , using powdered activated carbon as the adsorbent, the concentration of activated carbon is 1000mg / L;

[0057] Membrane reactor 2 adopts submerged ultrafiltration, PVDF mesoporous fiber, and the water-air ratio of water sprayed by membrane water spray pipe 21 is: 4L / m 3 , the biochemical process adopts the SBR aeration mode, aerobic aeration and anoxic aeration, the time is 8 hours aerobic and 2 hours anoxic respectively, and the aeration volume is 100m when aerobic 3 / kg organic matter; the sludge concentration in biological scru...

Embodiment 2

[0072] Treatment of mixed volatile gases containing ethylenediamine, methanol, formaldehyde, and toluene, among which the concentration of formaldehyde at the inlet: 31.1mg / m 3 , Ethylenediamine concentration: 49.43mg / m 3 , methanol concentration: 21.17mg / m 3 , toluene concentration: 3.58mg / m 3 . This process is used to remove VOCs, among which ethylenediamine, methanol, and formaldehyde are VOCs that are easily soluble in water, and toluene is an organic volatile gas that is not easily soluble in water.

[0073] The air inlet is sprayed with sludge and adsorbent, without washing filler, and the water-air ratio of the sludge sprayed by the inlet spray device 13 is 20L / m 3 , choose powdered activated carbon as the adsorbent, the concentration of activated carbon is 2000mg / L;

[0074] Membrane reactor 2 adopts submerged ultrafiltration, PVDF mesoporous fiber, and the water-air ratio of water sprayed by membrane water spray pipe 21 is: 4L / m 3 , the biochemical process adopts...

Embodiment 3

[0078] Example 3——Organic fertilizer bio-fermentation waste gas treatment

[0079] The air inlet is sprayed with sludge and adsorbent, the biological scrubbing reactor 1 is put into plastic Pall ring packing, and the water-air ratio of the sludge sprayed by the inlet spray device 13 is 40L / m 3, select powdered activated carbon as the adsorbent, the adsorbent concentration is 5000mg / L, and the biological scrubbing reactor 1 is put into spherical plastic suspension filler;

[0080] Membrane bioreactor 2 adopts submerged ultrafiltration, PVDF mesoporous fiber, and the spray water-air ratio of the membrane water spray pipe 21 is: 2L / m 3 , the biochemical process adopts the aeration mode, aerobic aeration and anoxic aeration in rotation, the aeration volume is: 120m 3 / kg organic matter; the aeration is used for 20 hours (aerobic), and then stopped for 4 hours (anoxic), the inside of the membrane tank is always aerated; the way of jet aeration;

[0081] This process adopts the co...

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Abstract

The invention relates to a volatile organic compound treatment reaction system and application thereof. The reaction system comprises a biological washing reactor (1), and the biological washing reactor (1) internally comprises activated sludge and a renewable volatile organic compound adsorbent. The biological washing reactor (1) further comprises a gas inlet (11) for introducing volatile organic compounds into the biological washing reactor (1), an inlet spraying device (13) for pumping out activated sludge and an adsorbent in the biological washing reactor (1) and capturing volatile organic compounds to the lower part of the biological washing reactor (1), an aeration disc (14) for aerating the biological washing reactor (1) and providing oxygen, and a gas outlet (12) for discharging the aerated gas. Compared with the prior art, the system has the advantages of high capturing capability for non-water-soluble substances and the like.

Description

technical field [0001] The invention relates to the field of volatile organic compound treatment, in particular to a volatile organic compound treatment reaction system and its application. Background technique [0002] In many industrial fields such as plastics, rubber processing, paint production, automotive painting and coating production, the production and processing of industrial products produce a large amount of waste gas (VOCs waste gas) containing volatile organic compounds (Volatile Organic Compounds, VOCs). These exhaust gases are discharged into the atmosphere without treatment, and under certain conditions, they will form photochemical pollution, which will affect air quality, animal and plant growth, and human health. Certain toxic VOCs exhaust gases have disabling, teratogenic, and carcinogenic effects, and cause serious harm to the human body exposed to them for a long time. To this end, countries have promulgated corresponding laws and regulations to limit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/84B01D53/85B01D53/44B01D53/96
CPCB01D53/44B01D53/84B01D53/85B01D53/96B01D2251/95B01D2257/708Y02A50/20
Inventor 王蕾
Owner 上海沁泰环境科技有限公司