| 초록 |
The co-culture system, composed of microalgae and bacteria, is considered as an alternative biosystem that can sustainably be used to remove inorganic nutrients (nitrogen and phosphorous) and COD. Immobilized C. vulgaris and suspended activated sludge were used in 1-L bubble column photobioreactors with 600 mL culture volume for the removal of nutrients. Three different ratios of C. vulgaris and activated sludge (such as, 1:1, 1:2, and 2:1) were applied to check the relative performance. Co-culture system, in any given ratio, removed significantly more nitrogen, phosphorous, and COD as compared to conventional system (activated sludge only). There was no significant difference in removing phosphorous and COD under three respected ratios. However, comparatively, most nitrogen was reduced in 2:1 of C. vulgaris and activated sludge. Both the C. vulgaris and bacteria present in activated sludge were increased during the treatment time |
