| There are many wastewater treatment processes combining different unit process to improve dissolved and suspended pollutants recently. SMBR system use membrane which can produce high quality water for reuse with minimal land instead of secondary clarifier as biological treatment and sand filter, ozonation, GAC, and disinfection processes as tertiary treatment. For development the BMB(Biofilter Membrane Bioreactor) system as submerged membrane bioreactor, in this study, New wastewater treatment system consisted of Rapid biofilm clarifier, Bioreactor, and Hollow fiber membrane and Plate membrane was studied to find optimal process which can meet the regulations of reuse water. This study was performed to evaluate the BMB reuse system which was composed by Rapid Biofilm Clarifier. Activated sludge Bioreactor and Membrane module. In Rapid Biofilm Clarifier replaced a conventional Primary Sedimentation, SS, BOD, COD were 40%, 20%. and 20% and turbidity, color were 30%and 10% respectively. this means Rapid Biofilm Clarifier having HRT value of 5.2min can replace a conventional Primary Sedimentation of the HRT value of 1.5∼2.5hr. And the BMB reuse system achieved a BOD < 5㎎/L, COD < 10㎎/L, Turbidity < 0.5 NTU, and Color < 20 unit respectively, and Total Coliform didn`t appear. This means this system can meet water quality standard of Water reuse system. As the flux of the plate membrane and Hollow Fiber membrane was 120∼140 L/㎡.hr.bar and 60∼90 L/㎡.hr.bar, more quantity of water was passed at the Plate membrane than Hollow fiber membrane. And a Total resistance of Hollow fiber membrane was higher than plate membrane. |
|
PDF
