Topic
Effluent
About: Effluent is a research topic. Over the lifetime, 32668 publications have been published within this topic receiving 533991 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: Fluorescence excitation-emission matrices combined with parallel factor analysis (PARAFAC) were used to characterize the dissolved organic matter in wastewater effluent, which provided insights into the nature of organic Matter in wastewater samples with different characteristics and originating sources.
135 citations
TL;DR: A mass balance was developed to determine river flowrates that requires only wastewater discharge flowrates and boron concentrations in wastewater effluents and in the river upstream and downstream of these discharges, and permits calculation of the percentage of the river deriving from wastewater.
Abstract: Using boron as a conservative tracer of municipal wastewater effluents, a mass balance was developed to determine river flowrates that requires only wastewater discharge flowrates and boron concentrations in wastewater effluents and in the river upstream and downstream of these discharges. Furthermore, this method permits calculation of the percentage of the river deriving from wastewater. This method could be useful within river sections featuring no independent data regarding river discharge. We assessed the decay of nitrate and N-nitrosodimethylamine (NDMA) precursors within an engineered treatment wetland and, using our boron analysis technique to account for dilution, within the Quinnipiac River (CT). Although both decayed with several day half-lives, their slow decay indicates they can persist to impact downstream drinking water supplies. Concentrations of NDMA and N-nitrosomorpholine (NMOR) were measurable within the river, but concentrations of four other nitrosamines, their precursors, and NMOR p...
135 citations
TL;DR: Fluorescence spectroscopy analysis on different fractions indicated that some free or combined aromatic amino acids might produce highly genotoxic byproducts during the chlorination of wastewater with a high NH3-N content, and this was then demonstrated through experiments on the chlorinations of free aromatic amino amino acids.
Abstract: Chlorine is a widely used disinfectant which prevents the spread of harmful pathogens when reusing wastewater, but harmful byproducts might be formed and cause adverse ecological and health effects In this study, the potential effects of chlorination on the genotoxicity of different biologically treated wastewater samples were investigated using the umutest For the firsttime, ammonia nitrogen (NH3-N) was found to significantly influence genotoxicity during wastewater chlorination After chlorination, the genotoxicity decreased in wastewater with a low NH3-N concentration ( 10-20 mg/L) By fractionating the DOM (dissolved organic matter) in wastewater into different fractions, it was found that the hydrophilic substances (HIS) fraction of DOM was the key fraction involved in decreasing genotoxicity during the chlorination of wastewater with a low NH3-N concentration, while the hydrophobic acids (HOA) fraction of DOM was the key fraction involved in increasing genotoxicity during chlorination of wastewater with a high NH3-N concentration Furthermore, fluorescence spectroscopy analysis on different fractions indicated that some free or combined aromatic amino acids might produce highly genotoxic byproducts during the chlorination of wastewater with a high NH3-N content, and this was then demonstrated through experiments on the chlorination of free aromatic amino acids
134 citations
TL;DR: While the wastewater effluents had a significant contribution to micropollutant burden downstream, both chemical analysis and bioanalysis showed a relevant contribution of diffuse sources from upstream during low flow conditions, suggesting that upgrading WWTPs will not completely reduce the micropolutants burden, but further source control measures will be required.
134 citations
TL;DR: There were significant differences in the concentrations of ciprofloxacin, azithromycin, and erythromycin in Firozabad ditch and Kan River which demonstrated that WWTPs discharges could be an important source of antibiotics being released in water bodies.
133 citations