정수처리에서 염수요구량 및 반응거동에 관한 연구

• 영문명: Evaluation of Chlorine Demand and Chlorine Decay Kinetics for Drinking Water
• 발행기관: 한국환경보건학회
• 저자명: 이윤진 조관형 최종헌 명복태 남상호
• 간행물 정보: 『1. 한국환경보건학회지』제27권 제1호, 27~35쪽, 전체 9쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2001.03.30

영문 초록

This aim of the work presented in this paper is to investigate the factors that affcet chlorine decay and to develop functional relationships that can be used to enhance the durability of network models. predictive relationships were established that correlated the rate of chlorine decay to the various water conditions such as DOC, NH3-N, initial chlorine, contact time, temperature and pH values. Free chlorine residual decreased with increasing temperature, DOC, NH3-N, reaction time and chlorine dose. At 20 ℃, pH 7, The initial chlorine demand per mg as DOC/L and mg as NH3-N/L was about 0.43, 2.69 mg/ ℓ respectively at 180 minutes contact time. The Reaction between chlorine and humic acids was lasted intil 48hr, but the reaction between chlorine and NH3-N was almost completed in 180 min. When the temperature is raised by 10 ℃, chlorine is more consumed about 0.25 mg/ ℓ in the absence of organic substances and it is more consumed about 3.4 mg/ ℓ in the presence of humic acid (5 mg/ ℓ) in water at pH 7 for 180 min. Regression Analysis created the resulting prediction equation for the chlorine decay in a SPSS package of the computer system. The model is as follows; Ct=1.239+0.707(Co)-0.000529(Time)-0.0112(Temp)+0.02227(pH)-0.42(DOC)-2.132(NH3-N).).

키워드

Chlorine Decau Model Kinetics Factors