| 초록 |
Using real municipal wastewater (RMW), simultaneous removal of inorganic nutrients (N and P) and organic contaminants was accomplished in a single reactor with co-culture of immobilized C. vulgaris and suspended activated sludge. Co-culture successfully reduced the significant amount of N (93% removal) after 2.5 d of retention time. Complete removal of P was achieved after 1-d treatment, but after that, co-culture excreted some stored P in the culture medium. The concentrations of N and P in the effluent were less than 2 and 0.1 mg L-1, respectively. However, the performance of co-culture for COD reductions was not satisfactory (only 50% removal). The growth of C. vulgaris was enhanced in the co-culture system that indicates the importance of synergistic effect of activated sludge. The current co-culture system is proved to be a good candidate in treating the inorganic nutrients, still, further improvement is needed for the elimination of organics. |
