Abstract Trihalomethanes (THMs) are generated in the drinking water treatment plant, due to reaction of halogenated disinfection compounds with natural organic matter (NOM). They related health problems both from point view cancer development and other important diseases. This study aimed assess quality tap Madrid terms prevention control THMs risks supply treated by Canal de Isabel II (CYII) a...

During water treatment, chlorine reacts with naturally occurring organic matter in surface water to produce a number of by-products. Of the by-products formed, trihalomethanes (THMs) are among the highest in concentration. We conducted a retrospective cohort study to evaluate the relationship between the level of total THM and specific THMs in public water supplies and risk for stillbirth. The ...

We present the results of an in-depth study in a small Southern Illinois town looking at the public’s preferences with respect to reducing trihalomethanes (THMs) in their public drinking water system. THMs are an interesting environmental risk to study. First they are a low-level risk created as a byproduct (via chlorination) of reducing the much larger risk of bacterial contamination. Second, ...

OBJECTIVES For many decades chlorination has been used as a major disinfectant process for public drinking and swimming pool water in many countries. However, there has been rising concern over the possible link between disinfectant byproducts (DBPs) and adverse reproductive outcomes. The purpose of this study was to estimate the concentrations of trihalomethanes (THMs) in some indoor swimming ...

Dynamic Fini te Element (FE) model updat ing may be considered as an opt imisat ion process . Over the pas t few years two powerful new opt imisa t ion a lgor i thms have been developed independent ly of each other, namely simulated annealing and the genetic algori thm. These are bo th probabi l i s t i c search a lgor i thms capable of f inding the global minimum amongst many local minima for ...

In this study, the changes in UV absorbance of water samples were characterized using defined differential UV spectroscopy (DUV), a novel spectroscopic technique. Chlorination experiments were conducted with water samples from Terkos Lake (TL) and Büyükçekmece Lake (BL) (Istanbul, Turkey). The maximum loss of UV absorbance for chlorinated TL and BL raw water samples was observed at a wavelength...

in this research, the chloroform (chcl3) removal effectiveness of two water treatment systems including membrane technology and granular activated carbon (gac) adsorption were studied. two bench-scales were designed and set up: 1) nanofiltration (nf) spiral-wound modules and 2) gac adsorption column. chloroform was considered as trihalomethanes (thms) basic indicator compound. the inlet and out...

Rainwater harvesting systems are one way to address the worldwide increase in water demand. If the harvested rainwater is for indoor use, residential users often disinfect it. If it is disinfected with chlorine, the presence of dissolved organic carbon (DOC) can lead to the formation of harmful disinfection by-products such as trihalomethanes (THMs). Although the quality of harvested rainwater ...

The present study aimed to determine the concentrations of several disinfection byproducts (DBPs), including trihalomethanes (THMs), haloacetic acids (HAAs), and haloacetonitriles (HANs), in the public and private swimming pools in Sanandaj, Iran (n=16). Correlations between DBP levels with water quality parameters (free chlorine, pH, total organic carbon, temperature, number of swimme...