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NTIS 바로가기한국물환경학회지 = Journal of Korean Society on Water Environment, v.33 no.2, 2017년, pp.187 - 196
노유래 (연세대학교 토목환경공학과) , 박준홍 (연세대학교 토목환경공학과)
To ensure hygienic safety of drinking water in a water storage tank, the concentrations of residual chlorine should be above a certain regulation level. In this study, we conducted model simulations to investigate the effects of temperature on residual chlorine in water storage tank conditions typic...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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정수 공정을 거친 물에 존재하는 잔류 염소 농도는 여러 급수시스템을 거치며 어떻게 변화하는가? | 4 mg/L 이상을 권고하고 있다(MOE, 2009). 정수처리시설에서 정수공정을 거치고 난 물은 시민들이 음용하는 수돗물로 오기까지 여러 급수시스템을 지나는데 이 과정에서 상당량의 잔류염소가 소실되며(Kiene and Levi, 1993; Vasconcelos et al., 1997; Zhang et al., 1992), 정수지에서부터 급수과정을 거처 수도꼭지로 오기까지 급수배관과 저수조 등을 통해 약 30-60%의 잔류염소가 감소되는 것을 볼 수 있다(Noh et al., 2016). | |
저수조 내 잔류염소 농도 감소에 관여하는 기작은 무엇으로 구분되는가? | 이러한 문제를 방지하기 위해서는 저수조 내 잔류염소 농도 감소에 관여하는 기작들의 정량적 영향에 대한 정보와 지식이 필요하다. 저수조 내 잔류염소 감소에 관여하는 주요 기작은 (i) 수체 내 분해 반응(Bulk decomposition), (ii)증발(탈기) 반응(Evaporation), 그리고 (iii)벽체 흡착 반응(Sorption)으로 구분될 수 있다. | |
수돗물 관리 시 국내 잔류염소의 기준은 얼마인가? | 국내에서는 기본적으로 수계 내 미생물 사멸 효과가 있는 염소를 주입하고 있으며, 수돗물까지 잔류염소의 지속적인 잔류가 요구되고 있다(MOE, 2010). 먹는물 수질기준 및 검사 등에 관한 규칙 제4조에 따르면 국내 잔류염소의 기준은 0.1 ~ 4.0 mg/L이며 수인성질병 감염위험성이 높을 경우 혹은 단수 이후 재급수시에는 0.4 mg/L 이상을 권고하고 있다(MOE, 2009). 정수처리시설에서 정수공정을 거치고 난 물은 시민들이 음용하는 수돗물로 오기까지 여러 급수시스템을 지나는데 이 과정에서 상당량의 잔류염소가 소실되며(Kiene and Levi, 1993; Vasconcelos et al. |
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