Wet scrubber

The wet scrubber is an odor, chemical contaminants (VOCs and particulate matter) abatement system that uses a liquid solution to remove pollutants from the air. It achieves an abatement efficiency of over 90%.

Wet scrubber: the process of transforming odorous pollutants

Wet washing towers or wet scrubbers transform pollutants in the air from the gaseous state to the liquid state through countercurrent washing of the air stream. Inside them, pollutants are stabilized and rendered odorless. This is achieved through the absorption principle employed by wet washing towers, where specific packing materials or exchange packs are placed inside a washing chamber. The chamber is constantly irrigated with a pressurized aqueous solution.

To ensure the effective treatment of polluting substances, the aqueous solution must have the appropriate pH and redox potential. Acidic pollutants are treated with alkaline solutions, while alkaline ones are treated with acidic solutions.

Storage tanks containing these aqueous solutions are equipped with complete dosing systems, including dosing pumps, allowing for the precise dosing of the necessary reagent to ensure effective odor removal.

After completing the washing process inside the tower, the airflow goes through a droplet separator, which recovers and prevents residual droplets from being released into the environment.

Scrubbers used for air treatment can be configured with one, two, or more stages, depending on the types of pollutants present and their concentration.

Main advantages of wet scrubbers

  • High deodorizing efficiency for all water soluble substances having a strong chemical reactivity
  • No substitution of exhausted materials
  • Reduced surface
  • Low load losses
  • Good pre-treatment of biofilters and dry filtering systems
  • Possibility of completion with additional sections, such as Venturi tubes for dust removal or additional equipment, such as double-step washing towers
  • Possibility of a vertical or horizontal positioning according to necessities

Wet scrubber for odor treatment: application fields

Wet scrubbers are widely used for odor treatment in various sectors, including:

  • Chemical industry
  • Wastewater treatment
  • Food industry
  • Paper industry
  • Pharmaceutical industry
  • Waste treatment
  • Composting plants
  • Oil and gas industry
  • Storage facilities

Basically, wet scrubberr rappresent versatile option for odor treatment and can be adapted to a wide range of industrial applications where odor removal is a priority

Technical characteristics

Power supply voltage
400V – 50 HZ (3F+N+T) 
Treatment flow-rate

From 50 to 90.000 m3/h


According to fan specifications

Work temperature

From +5° to +60°C

Structure material


 PP, e Inox AISI 304/316
Fan noisiness

From 65 to 82 dB(A) *

Absorption frequency

According to fan specifications

Load losses

10 - 60 mm c.a. *

Filtering material

Loose filling elements or structured material

Auxiliary equipment

Differential pressure probe, recirculation pump, dosing pump, pH - Orp electrodes, make-up liquid solenoid valve, over-flow, bottom unloading, inspections holes and demister.

Odor treatment features: optimization and improved control

We have introduced a series of features to our Scrubber system aimed at optimizing pollutant treatment, including:

  • Timed discharge: Ensures efficient liquid expulsion, preventing stagnation and ensuring optimal operation.
  • Remote control: The ability to control and monitor the system remotely, allowing greater control and facilitating remote management.
  • Temperature and pollutant flow monitoring: We have introduced a feature to monitor temperatures and pollutant flows to ensure the system is always operating under optimal conditions.
  • Remote assistance: We offer a teleassistance service to address any issues or questions, ensuring you have immediate support when needed.

These features make our system even more efficient and adaptable to specific needs

Multistage wet scrubber for maximum efficiency in odor removal

When superior efficiency in odor abatement is required, it is possible to build into a wet scrubber a series of other air/odor treatment systems, in order to create a multi-stage system.

The choice between a single-stage or multi-stage approach depends on the nature of the emission problem, constraints, and design objectives. Our ability to develop a concrete proposal, to be implemented by our technicians, is based on an accurate analysis of this information.

By introducing an additional treatment step with the help of an osmogenic barrier in traditionally designed wet abatement systems, it is possible to achieve a level of effectiveness in odor abatement that would be very difficult to obtain using a single step system.

Additives for wet scrubbers

It is possible to use some additives to increase wet scrubbers efficiency performances.
To have more information about it, contact us.