... by keeping it on for 1.5 h and off for 0.5 h. The membranes were washed (physical washing by tap water while wiping the membrane with hand or chemical washing by submerging the membrane in 0.25% ... 35(14), 341 8-3 428. Wu J. , Chen F., Huang X., Geng W. , and Wen X. (2006). Using inorganic coagulants to control membrane fouling in a submerged membrane bioreactor, Desalination, 197, 12 4-1 36. Xu ... Systems Tuyet T. TRAN*, Md. SHAFIQUZZAMAN*, Jun NAKAJIMA* * Department of Environmental Systems Engineering, Faculty of Science and Engineering, Ritsumeikan University, 1-1 -1 Nojihigashi,...