| Title |
A Study on the Variation of Chlorine Demand for Ammonia and Dissolved Organic Materials in the Advanced Water Treatment Process |
| Authors |
구이경 ; 황덕흥 ; 이상봉 ; 김동윤 ( Lee Kyoung Ku ; Deok Heung Hwang ; Sang Bong Lee ; Dong Youn Kim ) |
| Abstract |
Since 20th century began, chlorine has been used as a primary disinfectant for the water treatment. But it was suggested that disinfection by chlorine should be modified because the undesirable disinfection byproduct such as THMs had been found in drinking water. And so this study was carried out to understand the characteristics of chlorine demand variation through the water treatment process. Investigated results from this study were as following. The short term and the total chlorine demand during research period in Nakdong river, varied over the range of 3.09∼6.69 and 4.78∼9.78㎎/ℓ, respectively. The total chlorine demand was reduced about 80% after BAC filtration. Because NH₃-N reacted with chlorine rapidly, this reaction influenced the short term chlorine demand and the mean correlation coefficient was 0.99. The relationship between chlorine demand and NBDOC among DOC portion showed low correlation coefficient of 0.24, but that between chlorine demand and BDOC showed high correlationship. The correlation coefficients of 4hr, 72hr and 168hr were 0.77, 0.88 and 0.87, respectively. |