| Title |
Studies on Chlorine Demand and Its Decay Kinetics in Chlorinated Sewage Effluents |
| Authors |
백영석 ( Young Seog Beck ) ; 손진식 ( Jin Sik Sohn ) |
| Keywords |
Total residual chlorine; Chlorination; Wastewater; Chlorine decay rate |
| Abstract |
Chlorination of wastewater is recently practiced in Korea. While many researchers have studied the kinetics of aqueous chlorine(HOCl) with nitrogeneous compounds and other organic/inorganic contaminants in drinking water, the researches of wastewater chlorination are relatively few. The purpose of this study was to investigate the chlorine decay kinetics and parameters on wastewater chlorination. Chlorine decay rate increased with increasing initial chlorine concentration. The parameters affecting chlorine decay rate were different in each wastewater treatment plant. One of the most important parameters affecting chlorine decay was initial chlorine concentration, and other parameters such as NH₃-N, total coliform, UV_(254) and Fe were also affected. The decay ratio of chlorine was decreased with increasing initial chlorine concentration, and the disinfection efficiency showed good correlation with the decay ratio. |