Pentair has developed the anaerobic membrane bioreactor (AnMBR) technology, together with partner Biothane. The new technology achieves a complete retention of the biomass in the anaerobic digester and brings a significant improvement of the digestion process: more robust, smaller footprint, fully automated operation, higher biogas production efficiency and superior effluent quality (free of suspended solids and typically 99% COD reduction). The technology turns waste into water for reuse and produces energy-rich biogas.