Landfill leachates are often treated on-site before disposal to municipal wastewater treatment plants, although variations in leachate composition and organic loading continue to have negative impacts on downstream treatment processes. Leachate samples were collected from four landfills both before and after on-site treatment to evaluate the extent of biological treatment. The samples vary in a...

During rain storm events, land surface runoff and resuspension of bottom sediments cause an increase in Trihalomethane (THM) precursors in rivers. These precursors, when chlorinated at water treatment facilities will lead to the formation of THMs and hence impact drinking water resources. In order to evaluate the wet weather impact on the potential formation of THMs, river samples were collecte...

UV254 disinfection strategies are commonly applied to inactivate pathogenic viruses in water, food, air, and on surfaces. There is a need for methods that rapidly predict the kinetics of virus inactivation by UV254, particularly emerging difficult-to-culture viruses. We conducted systematic literature review rate constants wide range Using these data characteristics, we developed evaluated line...

background: natural organic matter is the cause of many problems associated with water treatment such as the presence of disinfection by-products (dbps) and membrane fouling during water filtration. in this study, the performance of the peroxi-electrocoagulation process (pep) was investigated for the removal of humic acids (has) from aqueous solutions. methods: pep was carried out for the remov...

Bromate formation is a complex process that depends on the properties of water and ozone used. Due to fluctuations in quality, surface waters require major adjustments treatment process. In this work, we investigated how time year, dose duration, ammonium affect bromides, bromates, absorbance at 254 nm (UV254), near-infrared (NIR) spectra, fluorescent components (humic-like tyrosine-like) durin...

Rapid detection of chemical contamination in the distribution system is essential in protecting public health, and using water quality surrogates to signal a contamination event offers the advantage of detecting a large number of chemicals. The concern over using surrogate parameters is whether they offer the ability to detect contaminants at concentrations low enough to prevent serious illness...

A dispersed-ozone flotation (DOF) separator was devised for a pilot study of tertiary wastewater treatment for re-use purposes. As a compact device combining coagulation, ozonation and flotation in an integrated unit, the DOF separator achieved a very high removal of SS, TOC, UV254 and colour, as well as effective inactivation of coliform and total bacteria within a short hydraulic retention ti...