6Smith C V, Jr Gregorio D D, Talcot R M. The use of ultrafiltration membrane for activated sludge separation. In:Banerji S K. Presented Paper at 24th Annual Purdue Industrial Waste Conference, Indiana: Purdue University, 1969. 1300-1310
7Brindle K, Stephenson T. Nitrifiication and oxygen utilisation in a membrane aeration bioreactor. J Membr Sci,1998, 144 : 197 - 209
8Scott K, Adhamy A, W Atteck, et al. Crossflow microfiltration of organic/water suspensions. Water Res, 1994, 28(1): 137-145
9Jonsson A S, Gun Tragardh. Fundamental principles of ultrafiltration. Chem Eng Process, 1990, 27 : 67 - 81