Abstract The presence of toxic algae, such as Microcystis aeruginosa (MA), in drinking water treatment plants (DWTPs) would contribute to algal organic matter (AOM) precursors toward disinfection by-products (DBPs). Electrocoagulation–flotation (ECF) has shown promising performance minimizing cells from and dissolved AOM. This study aimed investigate the effect current density (CD) pH on alumin...

Ozone has been widely used for drinking water treatment recently. This study was conducted to investigate the effect of dosing ozone on the formation potentials and speciation of disinfection by-products (DBPs, brominated DBPs in particular) during subsequent chlorination. Trihalomethanes (THMs), trihaloacetic acids (THAAs), dihaloacetic acids (DHAAs), dihaloacetonitriles (DHANs), chloral hydra...

The contribution of two blue-green algae species, Anabaena flos-aquae and Microcystis 16 aeruginosa, to the formation of trihalomethanes (THMs) and haloacetic acids (HAAs) was 17 investigated. The experiments examined the formation potential of these disinfection by-products 18 (DBPs) from both algae cells and extracellular organic matter (EOM) during four algal growth 19 phases. Algal cells an...

This study assesses the prevalence of disinfection by-product (DBP) precursors in some Southeast Queensland drinking water sources by conducting formation potential experiments for the four regulated trihalomethanes (THMs), and the potent carcinogen, N-nitrosodimethylamine (NDMA). NDMA formation potentials were consistently low (<5-21 ng/L), and total THM (tTHM) formation potentials were consis...

We investigated the association between total trihalomethanes (TTHMs) and risk of stillbirth and low and very low birth weight in three water regions in England, 1992-1998; associations with individual trihalomethanes (THMs) were also examined. Modeled estimates of quarterly TTHM concentrations in water zones, categorized as low (< 30 microg/L), medium (30-59 microg/L), or high (> or = 60 micro...

Co-treatment of landfill leachate and sewage in a traditional wastewater treatment plant (WWTP) is a very common leachate management method in the United States. However, biologically recalcitrant and humic-like leachate organic matters (the major fraction of mature leachate organics) cannot be truly removed by the aerobic biodegradation in WWTPs. Prior to effluent discharge from WWTPs, chlorin...

A survey of 16 US drinking water treatment plants was conducted on the occurrence, formation, and control of emerging disinfection by-products (DBPs). The formation and control trends of certain emerging carbonaceous (haloacetaldehyde) and nitrogenous (haloacetonitrile, halonitromethane, cyanogen halide, nitrosamine) DBPs were different from those of the regulated trihalomethanes (THMs). This w...

This paper describes a new method for predicting trihalomethanes (THMs) presence in networks of water supply systems, using a low-cost device that permits a fast monitoring of concentrations without need of complex analysis made in laboratories. This method, based on statistical models, allows the estimation of THM concentration by monitoring parameters whose determination is direct and easy, a...

OBJECTIVES We examined the relationship between adverse reproductive outcomes and exposure to several disinfection by-products including haloacetic acids (HAAs), trihalomethanes (THMs), and the brominated THMs sum (THMBr). METHODS Second- and third-trimester exposure scores were estimated from quarterly town-level average THM and HAA concentration data and were examined relative to mean birth...