APPLICATION OF MOVING BED MEMBRANE BIOREACTOR FOR TREATMENT OF DOMESTIC WASTEWATER

Abstract

THIS STUDY INVESTIGATED THE PERFORMANCE OF MOVING BED MEMBRANE BIOREACTOR (MBMBR) PROCESS FOR THE TREATMENT OF DOMESTIC WASTEWATER TREATMENT IN FOUR PHASES. THE EFFECTS OF BIO-CARRIERS ON MITIGATION OF MEMBRANE FOULING RELIED MORE ON THE MECHANICAL EFFECTS OF BIO-CARRIERS SCOURING, RATHER THAN THE PHYSIO-CHEMICAL EFFECTS OF MIXED LIQUOR SUSPENSION. THE CONCENTRATION OF DISSOLVED ORGANIC MATTERS SHOWED A STRONG CORRELATION WITH MEMBRANE FOULING RATE. THE MBMBR PROCESS COULD REDUCE MEMBRANE FOULING PRIMARILY DUE TO THE LOWER CONCENTRATION OF BIOPOLYMERS IN THE MIXED LIQUOR SUPERNATANT, WHICH WERE PROBABLY ATTRIBUTED TO THE HIGHER ABUNDANCE OF GENUS UNCULTURED (0.1.6.5.1.16.6) WITHIN THE FAMILY OF SAPROSPIRACEAE. THE LOWER DISSOLVED OXYGEN CONCENTRATION RESULTED IN THE HIGHER TOTAL NITROGEN (TN) REMOVAL BY DENITRIFICATION IN THE MBMBR PROCESS. THE TN REMOVAL EFFICIENCY COULD BE FURTHER IMPROVED WITH HIGHER BIO-CARRIERS FILLING RATIO. THE COMBINATION OF BIO-CARRIERS SCOURING AND BACKFLUSH