earticle

영어

BioWin 3.1 that can simulate MBRs was used to evaluate the biological nitrogen and phosphorus removal in MBR processes. Four different wastewater characteristics from combined and separated sewer systems were used as influent data. Four processes-A2O-MBR with MLR#1, A2O-MBR without MLR#1, UCT-MBR with MLR#1 and UCT-MBR without MLR#1-were tested for this evaluation. Also each process having both 1Q and 4Q of RAS flow corresponding to influent flow was tested. Total 8 configurations were simulated. Since the highest influent concentration having 4.44 as C/N and 44.4 as C/P ratios showed the highest variation in effluent characteristics, the detailed study was carried out.
With this characteristics, the phosphorus removal in anoxic tank was observed and it was believed DPAOs activity was enhanced by high MLSS concentration in anoxic tank. The variance in effluent NH3-N concentrations was observed in studied MBR processes with same total SRTs and this phenomenon should be further studied throughly.