The International Maritime Organization (IMO) has mandated a reduction in marine vessel sulphur emissions which is driving marine scrubber installations. Wastewater from the wet scrubbing process must be treated before being released to the environment.

H2O’s non-chemical scrubber water solution is compact, highly-efficient and offers a Zero-Liquid Discharge solution – recycling all recovered water back to the scrubber in a closed loop.

Scrubber wastewater poses several treatment challenges, including high concentrations of TDS and TSS, high temperature, and heavy metals. Due to the highly complex nature of FGD wastewater, several stages are typically required to treat the wastewater.

H2O uses electrocoagulation to precipitate dissolved metals and silicon carbide ultrafiltration membranes to remove the SOx particle, allowing the water to be reused in the scrubber.