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Advantages of a ClO2/NaClO combination process for controlling the disinfection by-products (DBPs) for high algae-laden water.
Environ Geochem Health. 2019 Jun; 41(3):1545-1557.EG

Abstract

Chlorine dioxide (ClO2) has been widely used in the process of preoxidation and disinfection as an excellent water treatment reagent. However, the inorganic by-products produced by ClO2, such as chlorite (ClO2-) and chlorate (ClO3-) are harmful to human health, and this has become a potential problem when using ClO2 in drinking water treatment. In this study, ClO2 alone and a ClO2/NaClO combination process were carried out to evaluate the algae removal efficiency of the treatment and the formation of disinfection by-products (DBPs: chlorite, chlorate, trihalomethanes and haloacetic acids) for high algae-laden water with 124.16 µg L-1 chlorophyll a (Chl.a) content. The results show that disinfection with 1.5 mg L-1 ClO2 alone results in a ClO2- concentration exceeding 0.7 mg L-1. ClO2 preoxidation/ClO2 disinfection is applicable for the control of effluent quality, but the ClO2- concentration still has an excessive risk when using 0.8 mg L-1 and 0.6 mg L-1 ClO2 for the two process, respectively. In the ClO2/NaClO combination process, the ClO2- concentration is below 0.6 mg L-1, and trihalomethane (THM) and haloacetic acid (HAA) concentrations are lower than 60% of the maximum contaminant levels (MCLs) set by the World Health Organization (WHO). Further, the formation of ClO2- is more effectively controlled by NaClO preoxidation/ClO2 disinfection than ClO2 preoxidation/NaClO disinfection.

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Authors+Show Affiliations

Ye B
Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China. State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
Cang Y
Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China. cangy@mail.sustc.edu.cn. State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China. cangy@mail.sustc.edu.cn. School of Environmental Science and Engineering, Harbin Institute of Technology, Shenzhen, 518055, China. cangy@mail.sustc.edu.cn.
Li J
School of Environmental Science and Engineering, Harbin Institute of Technology, Shenzhen, 518055, China.
Zhang X
School of Environmental Science and Engineering, Harbin Institute of Technology, Shenzhen, 518055, China.

MeSH

ChinaChloridesChlorine CompoundsChlorophyll ACyanobacteriaDisinfectantsDisinfectionOxidation-ReductionOxidesSodium HypochloriteTrihalomethanesWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30604306

Citation

Ye, Bin, et al. "Advantages of a ClO2/NaClO Combination Process for Controlling the Disinfection By-products (DBPs) for High Algae-laden Water." Environmental Geochemistry and Health, vol. 41, no. 3, 2019, pp. 1545-1557.
Ye B, Cang Y, Li J, et al. Advantages of a ClO2/NaClO combination process for controlling the disinfection by-products (DBPs) for high algae-laden water. Environ Geochem Health. 2019;41(3):1545-1557.
Ye, B., Cang, Y., Li, J., & Zhang, X. (2019). Advantages of a ClO2/NaClO combination process for controlling the disinfection by-products (DBPs) for high algae-laden water. Environmental Geochemistry and Health, 41(3), 1545-1557. https://doi.org/10.1007/s10653-018-0231-8
Ye B, et al. Advantages of a ClO2/NaClO Combination Process for Controlling the Disinfection By-products (DBPs) for High Algae-laden Water. Environ Geochem Health. 2019;41(3):1545-1557. PubMed PMID: 30604306.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Advantages of a ClO2/NaClO combination process for controlling the disinfection by-products (DBPs) for high algae-laden water. AU - Ye,Bin, AU - Cang,Yan, AU - Li,Ji, AU - Zhang,Xiaolei, Y1 - 2019/01/02/ PY - 2018/08/09/received PY - 2018/12/05/accepted PY - 2019/1/4/pubmed PY - 2019/10/31/medline PY - 2019/1/4/entrez KW - Algae KW - Chlorine dioxide (ClO2) KW - Disinfection KW - Disinfection by-products (DBPs) KW - Sodium hypochlorite (NaClO) SP - 1545 EP - 1557 JF - Environmental geochemistry and health JO - Environ Geochem Health VL - 41 IS - 3 N2 - Chlorine dioxide (ClO2) has been widely used in the process of preoxidation and disinfection as an excellent water treatment reagent. However, the inorganic by-products produced by ClO2, such as chlorite (ClO2-) and chlorate (ClO3-) are harmful to human health, and this has become a potential problem when using ClO2 in drinking water treatment. In this study, ClO2 alone and a ClO2/NaClO combination process were carried out to evaluate the algae removal efficiency of the treatment and the formation of disinfection by-products (DBPs: chlorite, chlorate, trihalomethanes and haloacetic acids) for high algae-laden water with 124.16 µg L-1 chlorophyll a (Chl.a) content. The results show that disinfection with 1.5 mg L-1 ClO2 alone results in a ClO2- concentration exceeding 0.7 mg L-1. ClO2 preoxidation/ClO2 disinfection is applicable for the control of effluent quality, but the ClO2- concentration still has an excessive risk when using 0.8 mg L-1 and 0.6 mg L-1 ClO2 for the two process, respectively. In the ClO2/NaClO combination process, the ClO2- concentration is below 0.6 mg L-1, and trihalomethane (THM) and haloacetic acid (HAA) concentrations are lower than 60% of the maximum contaminant levels (MCLs) set by the World Health Organization (WHO). Further, the formation of ClO2- is more effectively controlled by NaClO preoxidation/ClO2 disinfection than ClO2 preoxidation/NaClO disinfection. SN - 1573-2983 UR - https://www.unboundmedicine.com/medline/citation/30604306/Advantages_of_a_ClO2/NaClO_combination_process_for_controlling_the_disinfection_by_products__DBPs__for_high_algae_laden_water_ DB - PRIME DP - Unbound Medicine ER -