Powder Activated Carbon Treatment Membrane Bioreactor (PACT MBR) Using Ceramic Flat Sheet Membrane (CFM)

摘要

Ceramic Flat sheet Membrane (CFM) elements are used as water processing membranes having favorable features such as high durability and long operational life. For these reasons, the CFM has been applied in water treatment systems of the Power Activated Carbon Treatment Membrane Bioreactor (PACT MBR) by Siemens Corporation. This system is used to treat the oil containing wastewater discharged from petroleum refineries and petrochemical plants. The PACT MBR is capable for simultaneous treatment of activated sludge, powdered activated carbon via filtration in a single tank. This compact system reduces approximately 50% tank installation footprint comparing with conventional treatment. The powdered activated carbon can adsorb decomposable organic matters and oily substances. In addition, it can remove the membrane foulants (substances cause membrane blockade) from the membrane surface so that stable filtration treatment can be carried out. In order to determine CFM applicability in the PACT MBR, abrasion test was conducted for 36 months using CFM and powered activated carbon in an actual system. Compared with unused items, it has been verified that no damage is perceived on the membrane surface due to abrasion and we concluded that a long time of use is possible.