Concept

Sedimentation (water treatment)

Publications associées (184)

Inactivation of Antibiotic Resistant Bacteria and Resistance Genes by Ozone: From Laboratory Experiments to Full-Scale Wastewater Treatment

Urs von Gunten, Nadine Czekalski, Helmut Bürgmann

Ozone, a strong oxidant and disinfectant, seems ideal to cope with future challenges of water treatment, such as micropollutants, multiresistant bacteria (MRB) and even intracellular antibiotic resistance genes (ARG), but information on the latter is scarc ...

American Chemical Society2016

Formation of N-nitrosodimethylamine during water disinfection with chloramine

Stephanie Spahr

Disinfection processes such as chlorination, chloramination, and ozonation are a crucial measure to provide safe drinking water because they effectively inactivate pathogenic microorganisms. However, these processes can also lead to the formation of harmfu ...

EPFL2016

Particle water and pH in the eastern Mediterranean: Source variability and implications for nutrient availability

Athanasios Nenes

Particle water (liquid water content, LWC) and aerosol pH are important parameters of the aerosol phase, affecting heterogeneous chemistry and bioavailability of nutrients that profoundly impact cloud formation, atmospheric composition, and atmospheric flu ...

Copernicus GmbH2016

Contained density currents with high volume of release

Mário Jorge Rodrigues Pereira Da Franca, Quentin Theiler

Contained density currents with high volume of release reflect against the boundaries of the reception environment commonly leading to oscillatory flow. These flows exist in sediment clarifiers, compromising their operations, and deposited signatures of co ...

Wiley-Blackwell2016

Micropollutant degradation, bacterial inactivation and regrowth risk in wastewater effluents: Influence of the secondary (pre)treatment on the efficiency of Advanced Oxidation Processes

César Pulgarin, Dominique Grandjean, Luiz Felippe De Alencastro, Stefanos Giannakis, Anoys Magnet

In this work, disinfection by 5 Advanced Oxidation Processes was preceded by 3 different secondary treatment systems present in the wastewater treatment plant of Vidy, Lausanne (Switzerland). 5 AOPs after two biological treatment methods (conventional acti ...

Elsevier2016

Use of light-supported oxidation processes towards microbiological and chemical contaminants elimination in hospital wastewaters

Stefanos Giannakis

Hospital wastewaters have been long identified as carriers of chemical and microbiological pollutants. Their amounts and risk levels have initiated numerous works on changing the existing practices of co-treatment with municipal wastewaters and safe dispos ...

EPFL2016

Predicting aqueous speciation of environmentally relevant halogen oxidants: chloramines, bromamines, and bromochloramines

Jeremy Samuel Arey, Daniela Trogolo

Chloramines, bromamines, and bromochloramines are halogen-containing oxidants that arise from the reaction between ammonia and hypohalous acids during the disinfection of drinking and wastewaters. Although involved in the formation of toxic disinfection by ...

2015

10-Day survival of Hyalella azteca as a function of water quality parameters

Estuarine systems are among the most impacted ecosystems due to anthropogenic contaminants; however, they present unique challenges to toxicity testing with regard to varying water quality parameters. The euryhaline amphipod species, Hyalella azteca, is wi ...

Elsevier2015

Correlation between flocculation and adsorption of cationic polyacrylamides on precipitated calcium carbonate

Jutta Christine Wandrey, Hamideh Ahmadloo, Ineide Cruz Pinheiro, David Hunkeler

The study of each stage of the flocculation process is essential to better understand and predict flocculation mechanisms. The adsorption of cationic polyacrylamide derivatives (C-PAM) onto precipitated calcium carbonate (PCC) has been investigated systema ...

Inst Chemical Engineers2015

Faecal sludge treatment: Optimization of Ascaris eggs enumeration and inactivation, and start-up of an anaerobic thermophilic acid-phase digester

Léa Cécile Randin

Faecal sludge (FS) accumulates in onsite sanitation technologies, which play a prevailing role in low- and middle-income countries. However, FS management is generally lacking. FS is usually directly discharged in the environment despite its high organic l ...

2015

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