| Title |
Formation Characteristics of Disinfection By - products in Pilot Scale Chloramination Proceess |
| Authors |
윤제용(Je Yong Yonn),변석종(Seok Jong Byun),염철민(Cheol Min Yeom),조순행(Soon Haing Cho),김충환(Chung Hwan Kim),채선하(Seon Ha Chae) |
| Abstract |
Chloramine is one of the disinfectants and it is produced from the reaction between ammonia and chlorine. It has long been used to curb microorganisms and disinfection byproducts from drinking water. In this study, we investigated the characteristics of Trihalomethanes (THMs), Haloacetic acids (HAAS) and Total Organic Halides (TOX) (which means a surrogate of chlorinated byproducts) as chloramine process was applied in S pilot plant near downstream of Keum river and also compared with the results of bench scale experiments. Major findings were that chloramination process reduced up to 74% of THMs, 79% of HAAS and 73% of TOX when compared with those of the breakpoint chlorination practice in pilot plant experiments. In bench experiments, the percentage of reduction increased up to approximately 90% of THMs and HAAs, and 80% of TOX. In all experimented cases, HAAs was more highly detected than those of THMs. And the least formation of HAAS was found at the Cl₂/NH₃-N ratio of 4 as a mass basis. From these results, chloramine was feasible as a secondary disinfectant in S pilot plant. |