| Title |
Ozone-Activated Carbon Treatment in Middle Keum River containing Ammonia-Nitrogen |
| Authors |
김충환 ( Chung Hwan Kim ) ; 정상기 ( Sang Gi Jung ) ; 김학성 ( Hag Seong Kim ) |
| Abstract |
A demonstration plant was carried out to investigate the removal efficiency of NH_3-N and KMnO_4 consumption depending on the existence of pre-chlorination for the ozonation and activated carbon process in the S water treatment plant which is located at the middle of Keum River. The averge removal efficiency of KMnO_4 consumption for O_3/GAC processes with pre-chlorination and O_3/BAC processes without pre-chlorination were 48.6% and 50% respectively. It is similar to removal effect of KMnO_4 consumption for GAC and BAC process depending on the existence of pre-chlorination. Otherwise, the removal of THMFP for GAC and BAC process was 58% and 68% respectively. NH_3-N was not almost removed by sand filter and ozonation, but the average removal efficiency in the BAC process was about 31%. Especially, NH_3-N was not almost removed by O_3/BAC processes at the low temperature (below 10℃) in the winter season, O_3/BAC processes have the advantage of removal of organic substance when it is compared to pre -chlorination followed by O_3/GAC processes. Pre-chlorination followed by O_3/GAC processes were required to remove NH_3-N in the winter season because the removal of NH_3-N was almost ineffective by O_3/BAC process. |