5TH International Congress on Technology - Engineering & Science - Kuala Lumpur - Malaysia (2018-02-01)

Selection Of A Membrane Module Treating Organized Industrial Zone Wastewater With A Membrane Bioreactor (mbr)

Organized Industrial Zones (OIZs) are the central industrial zones which reduce/prevent environmental problems in Turkey. OIZs collect all the wastewater from different industrial sectors whose wastewater is brought to discharge standards put by regional authorities to further treat in a central wastewater treatment plant. Treated wastewater is discharged in those regions because generally it is not proper to be reused for irrigation purposes. Membrane bioreactor system is known to serve good water quality and flexible operation. A laboratory scale membrane bioreactor (MBR) is set to treat this mixed wastewater with a volume of 20 L. Raw wastewater is taken from the primary sedimentation tank that is after primary treatment and equalization tank. Three different membranes are used to investigate the operational problems, fouling tendencies and membrane performances. One of the membrane module is hollow fiber (HF) membrane with 0.45 µ pore size and 0.11 m2 membrane area. The other two membrane modules are flat sheet (FS) ones with 0.1 and 0.22 µ pore sizes. Microfiltration (MF) and ultrafiltration FS membranes are used with 0.07 m2 and 0.11 m2 membrane areas, respectively. Each membrane module is operated 60 days and performances are monitored. The first operated module (MF-FS) in MBR was rapidly fouled while UF-FS membrane module was operated 20 days at low pressure. MF-HF membrane was also operated more than 30 days without a significant pressure increase, however, HF module could not reach this performance unless it was chemically cleaned, externally. Water quality parameters did not show a significant difference between the modules.
İbrahim Uyanık, Mehmet Mükerrem Rençber, Oktay Özkan