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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water resources and hydroinformatics : Vulnerability assessment after chlorine disinfection in drinking water distribution system
Vulnerability assessment after chlorine disinfection in drinking water distribution system
Author : CRISTIANA DI CRISTO(1), ANGELO LEOPARDI(2), CLAUDIA QUINTILIANI(3)& GIOVANNI DE MARINIS(4)
ABSTRACT
Disinfection of drinking water is usually achieved by means of chlorine compounds for their effectiveness and low cost.
They ensure a residual concentration in the water supply system (WSS), which reduces the risk of pathogenic
contamination and limits the proliferation of microbial species. However, chlorine reacts with the organic matter in the
water producing disinfection byproducts (DBPs). Some DBPs, such as trihalomethanes (THMs) have carcinogenic effects
on human health and then their concentration has to be monitored and maintained below fixed values. In this context, the
objective of present paper is to show a procedure for performing a vulnerability analysis respect elevated THMs exposure
in WSS. The introduction of specific index parameters allows to identify the more critical nodes of the system respect to
different kind of exposure, high concentration exposure for a short period or chronic exposure to low THMs concentrations,
which are both important for epidemiological studies. The analysis is applied to the real water distribution system of
Cimitile, a town in South Italy, in which water is disinfected through sodium hypochlorite. The results show that the
considered parameters identify different vulnerable nodes respect to the different kind of exposure. The presented
procedure may be also useful for implementing methodologies for the optimization of the chlorination process in water
supply systems.
File Size : 498,201 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water resources and hydroinformatics
Date Published : 20/08/2015
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