Kubota Corporation has constructed five full-scale anaerobic membrane bioreactor (AnMBR) systems in Japan for treatment of stillage from shochu alcohol production. These systems were commissioned from 2006 to 2008. The AnMBR process has been demonstrated to have numerous process advantages
over more conventional technologies, such as superior effluent quality, and ability to handle high concentrations of COD, TSS, and FOG, while attaining high organic loading rates (10 to 15 kgCOD/m3·d). AnMBR installations typically operate at 55 °C, which provides additional
benefits of higher bacterial kinetic rates and less sludge production. The flat sheet Kubota membranes ensure no biomass is lost to the effluent. COD, BOD, TSS, and FOG removals are typically over 98 percent in the AnMBR process. Despite the very high strength of alcohol stillages, the pairing
of the AnMBR with an aerobic MBR (designed for biological nutrient removal), provides a twostage process that can produce an effluent with less than 10 mg/l TSS and BOD, and very low total nitrogen (TN) and total phosphorus (TP) concentrations.
Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.