There are several different types of scrubber systems used in various industries to control air pollution. The choice of scrubber system depends on the specific pollutants to be removed and the operational requirements. Here are some common types:

Wet Scrubbers: Wet scrubbers use a liquid (usually water or a chemical solution) to remove pollutants from the gas stream. They are effective for removing particulate matter and gases like sulfur dioxide (SO2) and hydrogen chloride (HCl). Examples include Venturi scrubbers, packed bed scrubbers, and spray towers.

Dry Scrubbers: Dry scrubbers use dry sorbents or adsorbents to capture pollutants from the gas stream. They are commonly used for removing acid gases like sulfur oxides (SOx) and acid mists. Dry scrubbers are often utilized when water availability is limited or when the byproducts of wet scrubbing are undesirable. Examples include dry lime scrubbers, dry sodium bicarbonate scrubbers, and dry activated carbon systems.

Electrostatic Precipitators (ESPs): ESPs use an electrostatic charge to capture and remove particulate matter from the gas stream. They are particularly effective for collecting fine particles and can handle high-volume gas streams. ESPs are commonly used in power plants and industrial boilers.

Fabric Filters (Baghouses): Fabric filters or baghouses use fabric filter bags to capture particulate matter from the gas stream. They are suitable for capturing fine particles and can handle high-temperature gas streams. Baghouses are widely used in industries such as cement, steel, and asphalt production.

Scrubber Systems for Specific Pollutants: Certain scrubber systems are designed specifically for the removal of particular pollutants. For example, acid gas scrubbers are used to remove acidic gases like hydrogen sulfide (H2S) and chlorine (Cl2). Ammonia scrubbers are employed to capture ammonia (NH3) emissions. Mercury scrubbers are utilized to remove mercury from flue gases.

Each type of scrubber system has its advantages and limitations, and the selection depends on factors such as pollutant characteristics, volume of gas to be treated, space availability, and regulatory compliance requirements. Consulting with experts, like ERGIL, can help determine the most suitable scrubber system for specific industrial applications.