Alkali Fume Scrubber

Alkali scrubbers use reagents such as sodium hydroxide (NaOH) to absorb and neutralize acid gases such as HCl, HF and SO₂. Chlorine and NOₓ require application-specific chemistry and controls. Contaminated gas is passed through a vessel, where it is treated with an alkaline liquid. Acidic pollutants are absorbed into the recirculating liquid and converted to salts, which are managed through controlled blowdown and appropriate wastewater treatment.

Alkaline scrubbers use pH control and chemical dosing for consistent performance. They’re often configured as packed-bed scrubbers to ensure high removal efficiency and ongoing removal of acidic gases, even in high-production environments.

When you work with MACH Engineering to design your system, you benefit from:

• Engineering expertise: The performance of your alkali scrubber depends on liquid distribution and overall system design. The team at MACH Engineering has decades of combined experience to create highly customized configurations that meet your operational requirements.
• System longevity: We can design systems made from fiberglass reinforced plastic (FRP), polypropylene, polyvinyl chloride (PVC) and, in some cases, other materials to provide long-term performance, even in challenging conditions. With careful design and strong materials, we create systems that require minimal maintenance, saving operational costs and downtime.
• High removal efficiency systems: Our fume scrubber systems have achieved efficiency rates above 95%.
• Full system support: Full service offerings include design services, fabrication support, installation supervision and fume scrubber rentals.
• Compliance support: With decades of experience, we know how to help facilities meet strict safety and environmental regulatory requirements.

MACH Engineering has extensive experience across industries, including chemical processing, semiconductors, wastewater treatment, metal finishing and other sectors. We’ve developed tailored wet scrubbers and fume scrubbers for companies for more than 25 years, allowing us to solve a variety of industry challenges. 

We offer customized, high-quality solutions and fast project turnaround to minimize your downtime and exposure. We use advanced process simulation to generate data about stage efficiency, sensitivity analysis results and other variables across different cases and flow rates.

Our expertise means we design for process optimization, integrating fume scrubbers with existing systems. We’ve completed projects requiring strict adherence to Factory Acceptance Testing (FAT) and other documentation requirements. In every case, we work closely with your team to find solutions that work best for you.

Trying to manage emissions requirements manually distracts your staff from core operational obligations and can lead to penalties and liability exposure. Our fume scrubber systems offer an ongoing solution — designed specifically for your facility. Contact us today to speak with an expert or request a quote.