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[Comparison of the effects of chlorine dioxide, sodium hypochlorite and their combination on simulative water disinfection].
Wei Sheng Yan Jiu. 2008 May; 37(3):285-9.WS

Abstract

OBJECTIVE

To compare the effects of disinfection of chlorine dioxide (ClO2), sodium hypochlorite(NaClO) and their combination (ClO + NaClO) on simulative water samples.

METHOD

The simulative water samples containing 5.0 x 10(4) - 5.0 x 10(5) cfu/100ml Escherichia coli were prepared in laboratory and disinfected by different doses of chlorine dioxide, sodium hypochlorite and their combination for 60, 60, 30 + 60 min respectively. The kill ratio for Escherichia coli, and the residual chlorine dioxide, and the product of chlorite ion (ClO2-) and total residual chlorine were detected and compared by the membrane filter(MF) technique and electrometric titration.

RESULT

The minimum effective dosage (MED) for disinfect of simulative water samples were 0.4 mg/L of chlorine dioxide, 0.5 mg/L of sodium hypochlorite, and the 0.1 mg/L + 0.3 mg/L or 0.2 mg/L + 0.2 mg/L of their combination. By comparision with disinfection of ClO2 and NaClO alone, the residual chlorine dioxide increased 13.43% - 166.67% in simulative water sample under disinfection by the combination of ClO2 + NaClO, While chlorite ion decreased 13.11% - 19.97% and total residual chlorine increased 9.34% - 40.15%.

CONCLUSION

The combination of chlorine dioxide and sodium hypochlorite for disinfection of drinking water could achieve better effect of disinfection and decrease disinfection by-products as well.

Authors+Show Affiliations

Wang Y
Institute of Environmental Medicine, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, MOE Key Lab of Environmental Health, Wuhan 430030, China. happywy1980@163.com
Li N
No affiliation info available
Lu Y
No affiliation info available
Wang Y
No affiliation info available

MeSH

Chlorine CompoundsDisinfectantsDose-Response Relationship, DrugDrug SynergismEscherichia coliOxidesSodium HypochloriteWater MicrobiologyWater Purification

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

chi

PubMed ID

18646523

Citation

Wang, Ying, et al. "[Comparison of the Effects of Chlorine Dioxide, Sodium Hypochlorite and Their Combination On Simulative Water Disinfection]." Wei Sheng Yan Jiu = Journal of Hygiene Research, vol. 37, no. 3, 2008, pp. 285-9.
Wang Y, Li N, Lu Y, et al. [Comparison of the effects of chlorine dioxide, sodium hypochlorite and their combination on simulative water disinfection]. Wei Sheng Yan Jiu. 2008;37(3):285-9.
Wang, Y., Li, N., Lu, Y., & Wang, Y. (2008). [Comparison of the effects of chlorine dioxide, sodium hypochlorite and their combination on simulative water disinfection]. Wei Sheng Yan Jiu = Journal of Hygiene Research, 37(3), 285-9.
Wang Y, et al. [Comparison of the Effects of Chlorine Dioxide, Sodium Hypochlorite and Their Combination On Simulative Water Disinfection]. Wei Sheng Yan Jiu. 2008;37(3):285-9. PubMed PMID: 18646523.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Comparison of the effects of chlorine dioxide, sodium hypochlorite and their combination on simulative water disinfection]. AU - Wang,Ying, AU - Li,Na, AU - Lu,Yi, AU - Wang,Yazhou, PY - 2008/7/24/pubmed PY - 2010/9/2/medline PY - 2008/7/24/entrez SP - 285 EP - 9 JF - Wei sheng yan jiu = Journal of hygiene research JO - Wei Sheng Yan Jiu VL - 37 IS - 3 N2 - OBJECTIVE: To compare the effects of disinfection of chlorine dioxide (ClO2), sodium hypochlorite(NaClO) and their combination (ClO + NaClO) on simulative water samples. METHOD: The simulative water samples containing 5.0 x 10(4) - 5.0 x 10(5) cfu/100ml Escherichia coli were prepared in laboratory and disinfected by different doses of chlorine dioxide, sodium hypochlorite and their combination for 60, 60, 30 + 60 min respectively. The kill ratio for Escherichia coli, and the residual chlorine dioxide, and the product of chlorite ion (ClO2-) and total residual chlorine were detected and compared by the membrane filter(MF) technique and electrometric titration. RESULT: The minimum effective dosage (MED) for disinfect of simulative water samples were 0.4 mg/L of chlorine dioxide, 0.5 mg/L of sodium hypochlorite, and the 0.1 mg/L + 0.3 mg/L or 0.2 mg/L + 0.2 mg/L of their combination. By comparision with disinfection of ClO2 and NaClO alone, the residual chlorine dioxide increased 13.43% - 166.67% in simulative water sample under disinfection by the combination of ClO2 + NaClO, While chlorite ion decreased 13.11% - 19.97% and total residual chlorine increased 9.34% - 40.15%. CONCLUSION: The combination of chlorine dioxide and sodium hypochlorite for disinfection of drinking water could achieve better effect of disinfection and decrease disinfection by-products as well. SN - 1000-8020 UR - https://www.unboundmedicine.com/medline/citation/18646523/[Comparison_of_the_effects_of_chlorine_dioxide_sodium_hypochlorite_and_their_combination_on_simulative_water_disinfection]_ DB - PRIME DP - Unbound Medicine ER -