A Model For Predicting THM Presence In
Networks Of Water Supply Systems
Author(s)
F. Osorio, D. Ribes, A. González-Martínez,
J. M. Poyatos & P. García
Abstract
The European normative, implemented in the Spanish national legislation in
2003, reduced the acceptable maximum concentration of THMs in drinking
water, from 150 to 100 μ/L. This implies that many existent facilities could not
achieve this requirement. Generally speaking, the problems related to THMs in
the area studied occur in certain periods during the year, mainly in summer. The
present concentration of trihalomethanes (THM) in networks samples of water
supply systems was predicted based on a set of easy parameters measured
continuously at the site, which evidently did not include THM concentration.
Consequently, when these values started being high, it was possible to take
necessary measures (e.g. to modify the water source, reduce chlorination, etc.) to
prevent higher values which are not permitted by law. The analysis of
disinfection by-products is expensive and to develop a simple tool that will allow
measuring the concentrations of trihalomethanes, particularly in small, poorly
resourced water supplies is therefore a worthy intention. Other studied aspects
have been the season of sampling or the sampling point. Data of drinking water
supply systems coming from four regions in Spain have been used. In total 893
complete analyses have been managed. For obtaining the model, a statistical
analysis of multiple regression and diverse Anova tests have been carried out.
Keywords: DBP, drinking water, model, THM.
Keywords
DBP, drinking water, model, THM
Related Book
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