| Title |
Development of KOWACO Modified Intermittent Aeration Process ( KOMIAE ) for Advanced Wastewater Treatment |
| Authors |
김병군(Byong Goon Kim),서인석(In Seok Seo),박승국(Seung Kook Park),신익상(Ik Sang Shin) |
| Abstract |
The KOMIAE process(KOWACO Modified Intermittent Aeration process) for nitrogen and phosphorus removal was investigated to find an optimum aerobic/anoxic time, optimum HRT and to evaluate the effect of temperature and influent C/N ratio. In this research, a 1.7㎥ pilot plant was used and fed with domestic wastewater which contained 100.8㎎/L of BOD, 22.3㎎/L of T-N and 2.11㎎/L of T-P on average. From the experimental results, the removal efficiency of COD_(mn), T-N and T-P were 75%, 75% and 90% respectively. The optimum aerobic/anoxic time and optimum HRT in KOMIAE process were 2/2hour and 8hour respectively. Nitrogen removal in KOMIAE process was influenced on temperature and influent C/N ratio. In the case of 20℃, the nitrogen removal efficiency was 78% but the nitrogen removal efficiency was lower than 46% at 15℃. For the purpose of 80% of nitrogen removal efficiency, the influent C/N ratio should be over 8. |