H Hydrotech Discfilter Discfilter offers a large filtering area in a small footprint for municipal effluent polishing and industrial water reuse. Filtration Hydrotech™ Cloth Filter: Confidence Series The Hydrotech Cloth Filter: Confidence Series unique engineering design provides: Health and safety for operators, Less plant downtime and site disruption, Robust TSS and phosphorus reduction to <5 and <0.2 mg/l Filtration Hydrotech™ Drum Filters Patented mechanical self-cleaning drum filter for municipal and industrial recovery water applications. Filtration