Seasonal Variations of Natural Organic Matter (NOM), Residual Chlorine, and pH in Water Distribution Networks of Shiraz City

Tabatabaei, Zeynab; Baghapour, Mohammad Ali; Lotfi, Vafa; Samzadeh, Amin

doi:10.30476/jhsss.2021.89111.1160

Document Type : Original Article

Authors

¹ Research Center for HealthSciences,Department of Environmental HealthEngineering, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran

² Research Center for Health Sciences, Department of Occupational Health Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran

https://doi.org/10.30476/jhsss.2021.89111.1160

Abstract

Background: Natural Organic Matters (NOMs) react in the presence of residual chlorine in distribution network pipes, producing such byproducts as Trihalomethanes which are carcinogenic and mutagenic. The present study was conducted to investigate the quality of drinking water in Shiraz.
Methods: In this cross-sectional study, 54 samples were taken from 27 locations in both summer and winter. For each sample, temperature, residual chlorine, pH, and NOM were measured during the two seasons. Residual chlorine and temperature measurement were performed at the sampling sites, but pH and NOM were measured in the laboratory.
Results: According to the results, the mean concentrations of Total NOM (TNOM), residual chlorine, pH, and temperature varied from 0.9 to 5 m^-1, 0 to 1.2 mg/L, 7.4 to 8 and 18 to 23.5 ᵒC in summer and from 0.3 to 1.5 m^-1, 0 to 0.8 mg/L, 7.6 to 8.2 and 9.7 to 10.8 ᵒC in winter, respectively. In addition, the concentrations of all measured parameters, except for pH, were reported to be higher in summer than in winter.
Conclusion: As a result, since the amount of NOM in the drinking water distribution network of Shiraz was not zero, regular monitoring of these compounds in the distribution networks is recommended to be done by engineers.

Keywords

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Journal of Health Sciences & Surveillance System

Seasonal Variations of Natural Organic Matter (NOM), Residual Chlorine, and pH in Water Distribution Networks of Shiraz City

References

References

Volume 9, Issue 4
October 2021
Pages 291-297

Seasonal Variations of Natural Organic Matter (NOM), Residual Chlorine, and pH in Water Distribution Networks of Shiraz City

References

References

Volume 9, Issue 4October 2021Pages 291-297

Volume 9, Issue 4
October 2021
Pages 291-297