Application of MBR Technology in Municipal Wastewater Treatment

摘要

The membrane bioreactor (MBR) is one application of membrane technology in wastewater treatment. Submerged MBRs, in which membranes are directly submerged in the aeration tank, have received significant attention because of their several advantages, including improved and more reliable effluent quality. In this study, the performance of hollow fiber micro filtration membranes immersed in a bioreactor for removal of chemical oxygen demand (COD), total suspended solids (TSS) and turbidity from municipal wastewater containing industrial wastewater was studied at different hydraulic retention times. The results demonstrate high treatment efficiencies for COD, TSS and turbidity, and the concentrations of these pollutants under all operating conditions were reduced to as low as 9 mg/L, l mg/L and 0.3 NTU, respectively. Therefore, this technology may be regarded as a promising treatment method for various applications in wastewater effluent reuse.