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Clothing factory waste gas purification treatment

Views: 3     Author: Xicheng EP LTD     Publish Time: 2023-08-12      Origin: Xicheng EP LTD

Garment factory exhaust gas purification is a key step to ensure environmental compliance in the production process. Garment factories produce various exhaust gases during the garment manufacturing process, such as volatile organic compounds (VOCs) produced in dyeing, printing, drying and other links. Harmful substances in these exhaust gases may cause harm to the environment and the health of employees, so appropriate measures need to be taken for purification. 

How to deal with the exhaust gas of garment factories

The following are some methods for the purification of waste gas in garment factories:

Activated carbon adsorption: Activated carbon is a commonly used adsorption material, which can effectively remove volatile organic compounds in exhaust gas. Activated carbon is placed in the exhaust gas circulation channel, and organic matter will be adsorbed on the surface of the activated carbon to purify the exhaust gas.

Wet scrubber: The wet scrubber uses the principle of liquid phase absorption to spray the exhaust gas through the liquid, so that the pollutants are dissolved or adsorbed in the liquid to achieve the effect of purification. Especially suitable for waste gas containing organic matter.

Thermal oxidation: Thermal oxidation is a high-temperature oxidation treatment technology that exposes exhaust gas to high temperature and oxygen conditions to oxidize and decompose organic compounds into harmless substances. This method is suitable for high concentrations of organic waste gas.

Electrostatic precipitator: The electrostatic precipitator uses the principle of electric field to charge the particles in the exhaust gas, and then collect them under the action of the electric field. It has a better effect on exhaust gas with more particulate matter.

Catalytic oxidation: Catalytic oxidation exposes the exhaust gas to the action of a catalyst, and oxidizes and decomposes organic matter into harmless substances at an appropriate temperature. This approach generally requires higher operating temperatures and catalysts.

UV photolysis: Ultraviolet light (UV) can decompose organic molecules, exposing the exhaust gas to UV radiation, the organic substances will gradually decompose into simpler compounds.

Combination technology: For complex exhaust gas components, a variety of different purification technologies can be used in combination to achieve better purification effects.

When choosing a waste gas purification treatment method, it is necessary to comprehensively consider factors such as waste gas composition, emission concentration, and production volume according to the specific conditions of the garment factory. At the same time, it is necessary to ensure that the methods adopted meet the requirements of local environmental protection regulations to ensure the environmental protection compliance of the factory. The best way is to cooperate with environmental protection experts or engineers to develop an exhaust gas purification treatment plan suitable for garment factories.

exhaust gas of garment factories

How wet scrubbers work

Wet scrubber, also known as gas scrubber, is a waste gas treatment equipment based on the principle of liquid phase absorption. Its working process includes three main steps of exhaust gas cooling, purification and dehydration. The exhaust gas is in contact with the sprayed liquid in the washing tower, and the pollutants are dissolved or adsorbed in the liquid, so as to achieve the effect of purification.

Composition of wet scrubber system

A wet scrubber system consists of several key components, including:

  • Exhaust air inlet: The exhaust air enters the scrubber system through the air inlet.

  • Scrubber: The scrubber is the core part of the whole system, in which the exhaust gas is in contact with the liquid spray, and the pollutants are adsorbed or dissolved.

  • Liquid spray system: The liquid spray system is responsible for spraying the liquid evenly in the exhaust gas, fully mixing with the exhaust gas, and promoting the adsorption and dissolution of pollutants.

  • Packing layer: The existence of the packing layer increases the contact area, helps the exhaust gas to fully contact with the liquid, and improves the purification efficiency.

  • Discharge port: The exhaust gas treated by the scrubber is discharged from the discharge port, which meets the environmental protection standard.

Application of wet scrubber in waste gas treatment of garment factories

  1. Wet scrubbers have important application value in the waste gas treatment of garment factories:

  2. Efficient purification effect: The wet scrubber can efficiently remove particulate matter and harmful compounds in the exhaust gas, especially for VOCs and other organic waste gases produced by clothing factories.

  3. Multi-process adaptability: The wet scrubber is suitable for a variety of waste gas types, including organic waste gas, acid waste gas, etc., with wide adaptability.

  4. Dehydration effect: The wet scrubber can not only purify the pollutants in the exhaust gas, but also remove the moisture in the exhaust gas, reducing the water pollution in the discharge process.

Application cases of exhaust gas scrubber system

Taking a garment factory as an example, the factory produces a large amount of exhaust gas containing VOCs during dyeing, printing and other processes. In order to meet environmental protection standards, the factory introduced an exhaust gas scrubber system. The system mixes the washing liquid with the exhaust gas through the spray nozzle, the harmful substances in the exhaust gas are adsorbed or dissolved, and the purified exhaust gas meets the emission requirements, achieving the goal of environmental protection.

In the waste gas treatment of garment factories, wet scrubbers and their systems show obvious advantages. Its high-efficiency purification effect, wide adaptability and ability to remove moisture in exhaust gas make it an important choice for garment factory exhaust gas treatment. By introducing wet scrubber systems, garment factories can not only achieve effective treatment of exhaust gas, but also reduce environmental risks, enhance corporate image, and promote sustainable development. Therefore, in the waste gas treatment of garment factories, the application prospect of the waste gas wet scrubber system is very broad.

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