Assessment of Cyanotoxins Removal Efficiency Using a Simulated Drinking Water Treatment Process for Downstream Source Water of the Nakdong River DOI Creative Commons
Chang-Dong Seo,

Hoonsik Yoom,

Minsoo Kang

et al.

Journal of Korean Society of Environmental Engineers, Journal Year: 2024, Volume and Issue: 46(11), P. 714 - 724

Published: Nov. 22, 2024

Objectives : This study aims to evaluate the removal rates of nine cyanotoxins produced by cyanobacteria using a laboratory-scale simulated drinking water treatment process (DWTP), providing useful data for DWTP operations during algal blooms.Methods A lab-scale was used under typical operating conditions, including specific chemical dosages and contact times. The employed chlorine ozone, as well powdered activated carbon (PAC) biological (BAC).Results Discussion According experimental results efficiency chlorination ozonation, microcystin-LR (MC-LR), MC-RR, MC-LA, MC-LF, MC-LY, MC-YR, cylindrospermopsin (CYN), nodularin (NOD) were effectively removed within ranges pre- post-chlorine post-ozone concentrations in DWTP. However, anatoxin-a (ANA) exhibited significantly lower efficiency. evaluation PAC indicated that MC-LY had low rates. In contrast, other six achieved over 50% when above 25 mg/L times exceeded 30 minutes. rate BAC showed conditions with an empty bed time (EBCT) more than 5 minutes, 70% removed. When EBCT 2 reached between 95% 100%. process, MC-RR primarily facilitated biodegradation, while CYN mainly through adsorption.Conclusion Due climate change, bloom periods various domestic sources are gradually increasing, resulting rising trend both frequency concentration detected cyanotoxins. evaluated DWTPs, focusing on chlorine/ozone (oxidation), (adsorption), (adsorption biodegradation). different DWTPs at facility act multiple barriers, removing upon their introduction.

Language: Английский

Assessment of Cyanotoxins Removal Efficiency Using a Simulated Drinking Water Treatment Process for Downstream Source Water of the Nakdong River DOI Creative Commons
Chang-Dong Seo,

Hoonsik Yoom,

Minsoo Kang

et al.

Journal of Korean Society of Environmental Engineers, Journal Year: 2024, Volume and Issue: 46(11), P. 714 - 724

Published: Nov. 22, 2024

Objectives : This study aims to evaluate the removal rates of nine cyanotoxins produced by cyanobacteria using a laboratory-scale simulated drinking water treatment process (DWTP), providing useful data for DWTP operations during algal blooms.Methods A lab-scale was used under typical operating conditions, including specific chemical dosages and contact times. The employed chlorine ozone, as well powdered activated carbon (PAC) biological (BAC).Results Discussion According experimental results efficiency chlorination ozonation, microcystin-LR (MC-LR), MC-RR, MC-LA, MC-LF, MC-LY, MC-YR, cylindrospermopsin (CYN), nodularin (NOD) were effectively removed within ranges pre- post-chlorine post-ozone concentrations in DWTP. However, anatoxin-a (ANA) exhibited significantly lower efficiency. evaluation PAC indicated that MC-LY had low rates. In contrast, other six achieved over 50% when above 25 mg/L times exceeded 30 minutes. rate BAC showed conditions with an empty bed time (EBCT) more than 5 minutes, 70% removed. When EBCT 2 reached between 95% 100%. process, MC-RR primarily facilitated biodegradation, while CYN mainly through adsorption.Conclusion Due climate change, bloom periods various domestic sources are gradually increasing, resulting rising trend both frequency concentration detected cyanotoxins. evaluated DWTPs, focusing on chlorine/ozone (oxidation), (adsorption), (adsorption biodegradation). different DWTPs at facility act multiple barriers, removing upon their introduction.

Language: Английский

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