상수처리에서 염소 및 오존산화를 이용한 색도제거

서지정보

ㆍ발행기관 : 대한상하수도학회 ㆍ수록지정보 : 상하수도학회지 / 31권 / 4호
ㆍ저자명 : 이정훈, 김진근

영어 초록

Optimal processes to remove chromaticity at E water treatment plant(WTP) mainly caused by algae of E lake in Jeju island were investigated based on lab-tests of chlorine and ozone oxidation. 42.9% of chromaticity of filtered water was removed by chlorine oxidation under pH 7.08.0, dose of 1.0 mg/L with contact time of 3060 min. On the other hand, chromaticity removal was 71.4% when post-ozone dose of 0.91.9 mg/L and pH 9.0, while it was increased to 86.7% under post-ozone dose of 3.17.3 mg/L and pH 9.0. However, there was no significant chromaticity removal efficiency increase when ozone doses were higher than 5.0 mg/L regardless of feeding point(i.e., pre-ozonation and post-ozonation) and pHs(i.e., 7.0 and 9.0.) under the experimental conditions. Based on the results, chlorine oxidation using existing chlorination facilities at the WTP is recommended for lower chromaticity while ozone oxidation is recommended for higher chromaticity by installing new ozone feeding facilities.

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