In this study, the occurrence in wastewater of two non-steroidal anti-inflammatory drugs (NSAIDs), naproxen and ibuprofen, and one personal care product, triclosan, was assessed using the polar organic chemical integrative sampler (POCIS). The samplers were initially calibrated in the laboratory to obtain sampling rates (Rs) for each target compound followed by deployment in the influent and ef...

Assessing the compatibility of industrial discharges with biological process a municipal wastewater treatment plant (WWTP) may represent critical task. Indeed, either focusing only on chemical characterization or ecotoxicity tests designed to assess impact surface waters lead questionable misleading conclusions. The feasibility an connection sewer should better take into account features downst...

Rivers used for drinking water production might be subject to anthropogenic pollution discharge upstream of the intake point. This problem was investigated in the case of the Moselle River, used for water production in Nancy (350,000 inhabitants) and which might be impacted by industrial activities 60 km upstream. The arsenic flux of a pulp and paper mill discharging in the Moselle River at thi...

This paper introduces DAI-Depur, an Environmental Decision Support System (EDSS). This systems supports the supervision of Municipal Waste Water Treatment Plants (WWTP). The paper highlights the succesful application of AI techniques to a complex environmental problem as the wastewater treatment that has both social and economic impact as well as in the environment. DAIDepur is successfully per...

Fecal contamination is a major concern for water quality management, since the fecal materials are associated with pathogens that can cause illness wherever water is used for recreational, drinking and aquaculture purposes. In order to monitor source(s) of fecal contamination in Oklahoma water systems, sterol profiles were previously examined in rural and urban samples collected from the Illino...

The development of integrated ecotoxicological approaches is of great interest in the investigation of global concerns such as impacts of municipal wastewater effluents on aquatic ecosystems. The objective of this study was to investigate the effects of a major wastewater municipal effluent on fish using a multi-level biological approach, from gene transcription and enzyme activities to histolo...

We present an analytical study about the prediction of Suspended Solids in the effluent of a Wastewater Treatment Plant by means Neural Networks. The inputs variables are constituted by ten state variables and three operational parameters. We have implemented two kind of architectures depending on if we consider only one output variable or five variables that describe the water quality at the e...

This work deals with the development of a digital image analysis procedure to characterize microbial flocs obtained in three different WWTP: a bench-scale Sequencing Batch Reactor (SBR) dealing with phenol and nitrogen biological removal, a municipal treatment unit (Ilha do Governador, Rio de Janeiro, Brazil) and an industrial wastewater treatment plant (Ciba – Estrada do Colégio, Rio de Janeir...

Coagulant dosing control in drinking and wastewater treatment plants (WWTPs) is often limited to flow proportional concepts. The advanced multi-parameter-based dosing control systems have significantly reduced coagulant consumption and improved outlet qualities. Due to the long retention time in separation stages, these models are mostly based on feed-forward (FF) models. This paper demonstrate...