상하수도학회지 (Journal of Korean Society of Water and Wastewater)
- 제13권2호
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- Pages.82-88
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- 1999
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- 1225-7672(pISSN)
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- 2287-822X(eISSN)
배·급수계통에서 유리염소와 클로라민의 소독효과에 관한 비교연구
Comparative Study on Disinfection Efficiency of Chlorine and Chloramine in the Distribution Systems
초록
This study was to evaluate disinfection efficiency of chlorine and chloramine as secondary disinfectants in the distribution systems. Indicator organism, HPC in the suspended and attached were measured for copper, galvanized steel, PVC, and carbon steel pipes. For suspended microorganism, the PVC pipe was markedly dense among the assessed pipe materials. The attached microorganism was markedly equivalent roughness of pipe materials. In copper and galvanized pipes, chloramine was more effective that free chlorine to disinfect suspended microorganism in the contact time of 2 hours. The contact time for the 99% inactivation of suspended microorganism by chloramine was longer than that of free chlorine. Regardless of pipe materials, chloramine was effective on both disinfection efficiency and 99% inactivation time for attached microorganism. In conclusion, chloramine which is good disinfectant for long contact time was recommended as secondary disinfectant in distribution system.
키워드