Kayaalp, NecatiOzturkmen, Gokmen2024-04-242024-04-2420160273-12231996-9732https://doi.org/10.2166/wst.2016.194https://hdl.handle.net/11468/18816In this study, for the first time, a venturi device was integrated into a submerged membrane bioreactor (MBR) to improve membrane surface cleaning and bioreactor oxygenation. The performances of a blower and the venturi device were compared in terms of membrane fouling and bioreactor oxygenation. Upon comparing membrane fouling, the performances were similar for a low operation flux (18 L/m(2).h); however, at a medium flux (32 L/m(2).h), the venturi system operated 3.4 times longer than the blower system, and the final transmembrane pressure was one-third that of the blower system. At the highest flux studied (50 L/m(2).h), the venturi system operated 5.4 times longer than the blower system. The most notable advantage of using a venturi device was that the dissolved oxygen (DO) concentration of the MBR was in the range of 7 to 8 mg/L at a 3 L/min aeration rate, while the DO concentration of the MBR was inadequate (a maximum of 0.29 mg/L) in the blower system. A clean water oxygenation test at a 3 L/min aeration rate indicated that the standard oxygen transfer rate for the venturi system was 9.5 times higher than that of the blower system.eninfo:eu-repo/semantics/openAccessAerationFoulingMembrane Bioreactor (Mbr)Venturi DeviceArticle741147156WOS:0003796621000152-s2.0-849800096572738699210.2166/wst.2016.194Q2Q3