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초록· 키워드
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Cyanobacteria blooms in waters have become a worldwide issue for drinking water production. Microcystin-LR (MC-LR), a toxic compound produced by cyanobacteria, is very toxic and poses a threat to public health. The World Health Organization has proposed a provisional guideline concentration of no more than 1.0 ㎍/L for MC-LR in drinking water. In conventional water treatment, chlorination is applied for the elimination of MC-LR, but when the influent pH is higher than 8.0, a higher chlorine dose is required, which may increase disinfection by-products. In this study, low pressure UV/chlorine oxidation precess has been evaluated for effective removal of MC-LR. MC-LR with an initial concentration of 100 ㎍/L was reduced by about 90 % under the condition of a chlorine concentration of 1.0 ㎎/L and UV dose of 200 mJ/㎠ which was much higher than 50 % removal under UV process alone and 60 % removal under chlorination alone. In UV/chlorine oxidation process, reactive chemical species such as OH radicals and chlorine radicals were involved, showing synergistic efficient than UV and chlorination alone process. These results shows the UV/chlorine is one of the effective oxidation process for MC-LR elimination.
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참고문헌 (25)
참고문헌 신청
Paerl, H. W / 2012 / Climate change: links to global expansion of harmful cyanobacteria / Water Res 46(5):1349~1636
Preece, E. P / 2017 / A review of microcystin detections in Estuarine and Marine waters:environmental implications and human health risk / Harmful Algae 61:31~45
Shen, Q / 2011 / Enhanced algae removal by drinking water treatment of chlorination coupled with coagulation / Desalination 271:236~240
Hitzfeld, B. C / 2000 / Cyanobacterial toxins: removal during drinking water treatment, and human risk assesment / Environ. Health Perspect 108:113~122
AWWARF / 1995 / Cyanobacterial(blue-green algal) toxins: A resourece guide
Preece, E. P / 2017 / A review of microcystin detections in Estuarine and Marine waters:environmental implications and human health risk / Harmful Algae 61:31~45
Shen, Q / 2011 / Enhanced algae removal by drinking water treatment of chlorination coupled with coagulation / Desalination 271:236~240
Hitzfeld, B. C / 2000 / Cyanobacterial toxins: removal during drinking water treatment, and human risk assesment / Environ. Health Perspect 108:113~122
AWWARF / 1995 / Cyanobacterial(blue-green algal) toxins: A resourece guide
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