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Wet Scrubber System For Waste Gas Treatment

Hệ thống xử lý khí thải bằng tháp khí Wet Scrubber Air Filter 젖은 스크러버 공기 필터 (1)

What is a wet scrubber system?

A wet scrubber system is a liquid waste gas absorption technology used to remove contaminants in industrial exhaust gases, in order to minimize negative impacts on the environment.

Operation mechanism of wet scrubber system

The treatment process in a wet scrubber system goes as follows: Contaminated exhaust is sucked into the system and passes through a system of aerosols or sprinklers. In the process, water is sprayed into the exhaust gas, creating a moist environment. Contaminants in the exhaust interact with the water and are absorbed or dissolved in the water.
Contaminants in exhaust gases can be removed in the wet scrubber system by the following mechanisms:
  1. When large dust particles or dissolved particles interact with water, they can clump together into larger particles and fall as sediments or sludge.
  2. Toxic gases and contaminants dissolved in water can undergo chemical reactions to convert to more nontoxic substances.
  3. Contaminants dissolved in water can be removed by the absorption process, in which they leach into the water and are retained in the system.
After the treatment process, the exhaust gas that has passed the wet scrubber system will have a significantly reduced level of pollution, and the water containing pollutants is further treated or safely discharged according to environmental regulations.
The wet scrubber system can be customized and adapted to suit the specific exhaust gas treatment requirements of each industry or manufacturing process. It is a popular and effective technology in reducing air pollution and protecting the environment.

What is a wet scrubber system?

The wet scrubber system consists of the following main components:
  1. Contactor: This is the component in a wet scrubber system where flue gas and liquid come into contact with each other for the absorption and removal of contaminants to occur. Contactors can come in many different shapes and sizes, including structures such as radiation, between substance and substance, between substance and solid, and between substance and surface.
  2. Pump system: The pump system is used to deliver fluid to the contact equipment in the wet scrubber system. The pump has the role of pushing the fluid from the supply to the contact equipment and maintaining the fluid flow during the operation of the system.
  3. Spraying system: Spraying system is commonly used in wet scrubber system to disperse liquid in contact equipment. It consists of sprayers or nozzles that are strategically located to produce small droplets of liquid and spray into the contact space with exhaust gas. This spraying process increases the contact area and effectively absorbs contaminants.
  4. Waste treatment system: The wet scrubber system also includes parts for the treatment of waste after the absorption process. This may include contaminated solution tanks, filtration devices, wastewater treatment systems and other measures for the treatment and removal of waste that has been absorbed.

Hệ thống xử lý khí thải bằng tháp khí Wet Scrubber Air Filter 젖은 스크러버 공기 필터 (1)

What types of wet scrubber systems are available?

Wet scrubber systems come in many different types, which are suitable for exhaust gas treatment requirements and operating conditions. Here are some common types of wet scrubber systems:
  1. Venturi Scrubber: Venturi scrubber uses the principle of vacuum pressure to create an absorption effect. The exhaust gas is sucked into a miniature suction throat and combines with the spray water to create a low pressure flow of liquid. This process eliminates dust particles and other contaminants in the exhaust gas.
  2. Foam Scrubber: Foam scrubbers use water and foaming agents to create a foam membrane in the system. Exhaust gases pass through the foam membrane, and contaminants are absorbed in the foam. Foam scrubbers are often used to remove toxic gases, evaporated organics, and odors in the exhaust gases.
  3. Impingement Scrubber: Impingement scrubber uses the collision principle to separate dust particles and contaminants from the flue gas. The flue gas is pushed through a series of radiation or mesh plates and the dust particles touch the surface, which is then collected and removed.
  4. Spray Tower: Spray tower (also known as ejector scrubber) uses top-down spray water to treat waste gases. The spray water creates a mist or a fluid stream in the tower. The waste gases pass through the mist or fluid stream, and the contaminants are absorbed or separated.
  5. Packed Bed Scrubber: Packed bed scrubber uses a layer of packaging material such as marbles, activated carbon or structural materials to create a large surface for the absorption process to take place. Waste gases pass through the packaging material layer and contaminants interact and are absorbed.
These are just some examples of common types of wet scrubber systems. Each has its own advantages and limitations, and choosing the right type depends on the specific requirements of the exhaust treatment system.

Reviews of the wet scrubber system:

The wet scrubber system has many advantages and limitations as follows:
Advantages:
  • Effectively remove contaminants: The wet scrubber system is capable of effectively removing contaminants such as fine dust, acid gas, organic compounds and unpleasant odors in industrial exhaust gases.
  • Flexible and Customizable: The wet scrubber system can be designed and adapted to suit the specific exhaust gas treatment requirements of each industry. It can be customized to handle specific pollutants and meet stringent environmental standards.
  • No solid waste generation: Compared with some other waste gas treatment technologies, the wet scrubber system does not generate large amounts of solid waste. This helps reduce the problem of waste treatment and removal after the waste gas treatment process.
Limitations:
  • Water consumption: Wet scrubber systems require large amounts of water to operate. Water consumption can be a problem in water-scarce areas or in industries with other large water demands.
  • Large space requirements: Wet scrubber systems are typically large in size and require sufficient space for installation. This can make it difficult to integrate it into plants or areas with limited space.
  • Operation and maintenance of wet scrubber systems can be costly. The maintenance of fluid quality, replacement and maintenance of components such as pumps, injection systems, and contact equipment require special attention and significant expense.

Hệ thống xử lý khí thải bằng tháp khí Wet Scrubber Air Filter 젖은 스크러버 공기 필터 (1)

Important application of wet scrubber system:

Wet scrubber systems have wide application in many industries for waste gas treatment. Here are some important applications of wet scrubber systems:
  • Energy sector: emissions from power plants, thermal power plants, solid waste treatment plants and other sources of emissions in the energy industry.
  • Chemical industry: exhaust gases in chemical manufacturing plants, such as the production of acids, alkalis, organic compounds and additives.
  • Steel and metal manufacturing industry: exhaust gases from metallurgical and heating processes. It helps to remove contaminants such as sulfur compounds, heavy metal compounds and organic compounds.
  • Woodworking industry: waste gas from the distillation, drying and burning of wood. This helps remove contaminants such as formaldehyde vapor, volatile organic compounds and organic substances that affect the environment and human health.
  • Other industries: such as food processing, paper making, fiber manufacturing, and ore mining industry.

FAQ About Wet Scrubber Systems:

  • What kind of contaminants is the Wet Scrubber capable of removing? Wet scrubber is capable of removing contaminants such as dust particles, toxic gases, volatile organic matter and acid gases.
  • Is wet scrubber effective in reducing exhaust gas pollution? Yes, wet scrubber is an effective method to reduce exhaust gas pollution. It can significantly remove dust particles and other contaminants in exhaust gas, helping to achieve environmental standards and protect human health.
  • Do wet scrubbers need to use detergents? Depending on the specific exhaust gas treatment requirements, wet scrubbers may use detergents such as alkalis or acids to increase their ability to absorb and remove contaminants. However, not all wet scrubber systems use detergents.

Conclusion about wet scrubber system:

Wet scrubber system is a common and effective technology in waste gas treatment. It helps to remove contaminants such as dust particles, toxic gases and acid gases from industrial and factory exhaust gases. Wet scrubber can be customized and applied in many different industries.
However, the water treatment and waste water management during the operation of wet scrubber must be taken care of to ensure sustainability. Need a team of consultants on the design, construction and operation of wet scrubber systems in the treatment of waste gas at enterprises please contact us Natural Star Vina.
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