Water-bloom and red tide due to eutrophication have been overgrown and have caused various environmental problems.
Recently, however, research on bid-diesel that can utilize algae as an energy source has been actively carried out. In particular,
many studies variously have been conducted to utilize algal photosynthesis oxygen as a supply method for reducing the energy
by an air blower in MWTP. In this study, a lab scale algae-nitrification reactor was operated to replace the oxygen required
for nitrogen removal and the operation period was largely divided into three sections. In the first section, ammonia nitrogen
removal efficiency was 24 ~ 38% according to the MLSS (Mixed Liquer Suspended Solid) concentration. In the second section,
ammonia nitrogen removal efficiency was 38 ~ 50% according to the micro-algae concentration and in the last section
ammonia nitrogen removal efficiency was 61 ~ 80% according to HRT (Hydraulic Retention Time). As a result, as the MLSS
decreased and algae biomass increased, the ammonia nitrogen removal efficiency tended to increase, but the effect of Algae
biomass was greater than that of MLSS.