A Aquilair™ Aquilair™ is a chemical scrubber which transfers odorous molecules to an aqueous solution. Biogas and Odour Treatment E Evaled™ Evaporation technologies for wastewater treatment, water reuse and zero liquid discharge (ZLD), waste volume and disposal cost reduction, and by-products recovery. Evaporation - Distillation - Crystallization H Hydrex™ Comprehensive range of water treatment chemicals to suit all water treatment needs. Sludge treatment