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Wastewater disinfection alternatives: chlorine, ozone, peracetic acid, and UV light.
Water Environ Res. 2007 Nov; 79(12):2373-9.WE

Abstract

Disinfection tests were carried out at pilot scale to compare the disinfection efficiency of ozone, sodium hypochlorite (NaOCl), peracetic acid (PAA), and UV irradiation. Total coliforms, fecal coliforms, and Escherichia coli were monitored as reference microorganisms. Total heterotrophic bacteria (THB) were also enumerated by cytometry. At similar doses, NaOCl was more effective than PAA, and its action was less affected by contact time. The results obtained by ozonation were comparable for total coliforms, fecal coliforms, and E. coli. On the contrary, some differences among the three indicators were observed for NaOCl, PAA, and UV. Differences increased with increasing values of the disinfectant concentration times contact time (C x t) and were probably the result of different initial counts, as total coliforms include fecal coliforms, which include E. coli. The UV irradiation lead to complete E. coli removals, even at low doses (10 to 20 mJ/cm2). Total heterotrophic bacteria appeared to be too wide a group to be a good disinfection indicator; no correlation was found among THB inactivation, dose, and contact time.

Authors+Show Affiliations

Mezzanotte V
Università degli Studi di Milano Bicocca, Milan, Italy. valeria.mezzanotte@unimib.it
Antonelli M
No affiliation info available
Citterio S
No affiliation info available
Nurizzo C
No affiliation info available

MeSH

AnimalsChlorineDisinfectionEnterobacteriaceaeEscherichia coliFecesHumansOzonePeracetic AcidSewageUltraviolet RaysWaste Disposal, FluidWater Purification

Pub Type(s)

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

Language

eng

PubMed ID

18044353

Citation

Mezzanotte, V, et al. "Wastewater Disinfection Alternatives: Chlorine, Ozone, Peracetic Acid, and UV Light." Water Environment Research : a Research Publication of the Water Environment Federation, vol. 79, no. 12, 2007, pp. 2373-9.
Mezzanotte V, Antonelli M, Citterio S, et al. Wastewater disinfection alternatives: chlorine, ozone, peracetic acid, and UV light. Water Environ Res. 2007;79(12):2373-9.
Mezzanotte, V., Antonelli, M., Citterio, S., & Nurizzo, C. (2007). Wastewater disinfection alternatives: chlorine, ozone, peracetic acid, and UV light. Water Environment Research : a Research Publication of the Water Environment Federation, 79(12), 2373-9.
Mezzanotte V, et al. Wastewater Disinfection Alternatives: Chlorine, Ozone, Peracetic Acid, and UV Light. Water Environ Res. 2007;79(12):2373-9. PubMed PMID: 18044353.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Wastewater disinfection alternatives: chlorine, ozone, peracetic acid, and UV light. AU - Mezzanotte,V, AU - Antonelli,M, AU - Citterio,S, AU - Nurizzo,C, PY - 2007/11/30/pubmed PY - 2008/2/1/medline PY - 2007/11/30/entrez SP - 2373 EP - 9 JF - Water environment research : a research publication of the Water Environment Federation JO - Water Environ Res VL - 79 IS - 12 N2 - Disinfection tests were carried out at pilot scale to compare the disinfection efficiency of ozone, sodium hypochlorite (NaOCl), peracetic acid (PAA), and UV irradiation. Total coliforms, fecal coliforms, and Escherichia coli were monitored as reference microorganisms. Total heterotrophic bacteria (THB) were also enumerated by cytometry. At similar doses, NaOCl was more effective than PAA, and its action was less affected by contact time. The results obtained by ozonation were comparable for total coliforms, fecal coliforms, and E. coli. On the contrary, some differences among the three indicators were observed for NaOCl, PAA, and UV. Differences increased with increasing values of the disinfectant concentration times contact time (C x t) and were probably the result of different initial counts, as total coliforms include fecal coliforms, which include E. coli. The UV irradiation lead to complete E. coli removals, even at low doses (10 to 20 mJ/cm2). Total heterotrophic bacteria appeared to be too wide a group to be a good disinfection indicator; no correlation was found among THB inactivation, dose, and contact time. SN - 1061-4303 UR - https://www.unboundmedicine.com/medline/citation/18044353/Wastewater_disinfection_alternatives:_chlorine_ozone_peracetic_acid_and_UV_light_ DB - PRIME DP - Unbound Medicine ER -