| 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 38%, 20%, and 20% and turbidity, color were 28%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 2∼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 1/㎡.hr.bar and 60∼90 1/㎡.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. Because the HRT of the BMB reuse system was shorter than water reuse systems using conventional Activated sludge in maintaining HRT of 6.6hr, it can save capital investment in space and meet water quality standard of Water reuse system. |
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