A ACTIFLO® Disc ACTIFLO® Disc is a polishing solution designed to achieve high removal levels of suspended solids and phosphorus in municipal and industrial wastewater for water reuse. Filtration E Ecodisk™ Ecodisk™ - The Ecological solution for domestic wastewater treatment plants, from 100 to 10,000 Population Equivalent. Aerobic Wastewater Treatment H Hydrotech Discfilter Discfilter offers a large filtering area in a small footprint for municipal effluent polishing and industrial water reuse. Filtration