Yes. Exeon’s scrubX™ wet scrubber system can operate as a standalone treatment system or be combined with other air filtration technologies as part of a multi-stage odour and emission control process.
Combining treatment methods can be particularly effective where an industrial air stream contains several different pollutants, contaminant concentrations fluctuate or a single technology cannot efficiently achieve the required discharge conditions.
For example, wet scrubbing may provide the primary removal stage for ammonia, hydrogen sulphide or acidic gases, while activated carbon is installed downstream to remove residual odours or other gaseous pollutants.
Can scrubX™ Be Combined with Activated Carbon?
Yes. Wet scrubbing and activated carbon filtration can complement one another particularly well.
The scrubber can remove or neutralise the bulk of suitable contaminants before the treated air reaches the carbon bed. A hi-flo™ activated carbon system can then act as a final polishing stage, adsorbing remaining odours, VOCs or other suitable compounds.
Reducing contaminant concentrations before the carbon stage can also reduce the load placed on the media, potentially helping to extend its working life.
Exeon has demonstrated this approach in a combined scrubX™ and hi-flo™ tank and process extraction system. The installation at an anaerobic digestion facility incorporated a combination scrubber and carbon filter unit to treat emissions from multiple sources within a compact footprint.
Can a Wet Scrubber Be Combined with a Biofilter?
Depending on the contaminant profile, wet scrubbing may also form part of a treatment process incorporating biological filtration.
Exeon’s airo-flo™ biofilter system uses microorganisms to treat biodegradable contaminants and is particularly suited to high-moisture air streams containing hydrogen sulphide, mercaptans and other waste-related emissions.
Where several contaminant types are present, different stages can be selected according to the compounds each technology is best suited to treating. The correct sequence will depend on the chemistry of the air stream and should be established during system design.
What Other Pre-Treatment Can Be Used?
Dust or particulate pre-filtration may also be required before wet scrubbing or another treatment stage.
Industrial sites dealing with waste, powders or dusty processes can produce both gaseous pollutants and particulate matter. Removing excessive dust before the main treatment equipment can help reduce deposits, protect downstream components and maintain reliable airflow.
In some complex applications, more than one scrubber stage may also be required where pollutants have different chemical properties and need different treatment solutions.
When Is a Multi-Stage System Recommended?
A combined air treatment system may be appropriate where:
- Several different pollutants are present
- Contaminant concentrations are particularly high
- Emission levels vary during production
- A final polishing stage is required
- Activated carbon would otherwise become saturated quickly
- Dust or particulate matter requires separate treatment
- Different contaminants require different chemical treatments
The correct arrangement should be based on airflow, contaminant concentrations, pollutant chemistry, required removal efficiency and ongoing operating costs.
Exeon provides a range of industrial odour and emission control systems and air filtration technologies, allowing scrubX™, hi-flo™ and airo-flo™ to be specified individually or incorporated into a wider treatment strategy.
By matching each treatment stage to the pollutants it handles most effectively, a multi-stage system can provide reliable emission reduction while improving the efficiency and working life of downstream equipment.
Contact Exeon today to arrange a site consultation or request a tailored proposal. Our technical team will assess your airflow volumes and contaminant profile to design a system that delivers consistent emission control.