Membrane Bioreactors for Water Repurification-Phase I. Desalination Research and Development Program Report, No. 34

摘要

This report evaluates the feasibility of Membrane Bioreactors (MBRs) for water repurification projects. The MBR process uses membrane filters to substitute for the sedimentation and filtration processes in conventional suspended growth biological treatment. Thus, the MBR effluent can be adequate for the subsequent reverse osmosis membranes typically employed in water repurification projects. The study has shown that the MBR process is cost competitive with other conventional wastewater treatment processes and offers several advantages. It was also concluded that a parallel comparison of several commercially available MBR systems needs to be performed at pilot-scale in order to adequately demonstrate the effectiveness of the h4BR technology for water repurification. A preliminary plan for the pilot-scale evaluation study has been developed. This plan identifies the MBR manufacturers to be evaluated, which are Mitsubishi Rayon Corporation, Zenon Municipal Systems, and Suez-Lyormaisedes-Eaux. The plan also includes a description of the pilot test site located at the Aqua 2CKJO Research Center in Escondido, California. It is projected dxa 24 months will be required to conduct Phase II of the project, with 12 months allocated for the operation of the pilot units.