ABSTRACT
The membrane bioreactor (MBR) is not new in wastewater technology. It has been used and explored since the 1960s in solid-liquid separation where the bioreactor acts as a biological treatment process and the membrane is used as the filter in the filtration process. By controlling the parameters such as solids retention time (SRT), hydraulic retention time (HRT), transmembrane pressure (TMP), flux, and mixed liquor suspended solids (MLSS) to optimum conditions the best MBR performance can be produced. This chapter discusses the treatment of spent caustic wastewater performance by using an aerobic submerged MBR (ASMBR). The focus on the ASMBR is because of the efficiency in removing the contaminants and the production of high-quality effluent. There are some methods to reduce fouling problems and enhance the performance of MBRs and produce high-quality effluents. This technology grows and many researchers are aggressively modifying the MBR system based on wastewater conditions in order to increase the performance and to reduce operational cost.
