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Micropolluants issus de l'activité domestique dans les eaux urbaines et leur devenir en station d'épuration

Abstract : This work allowed to acquire new knowledge on micropollution issued from household activities. The occurrence of some micropollutants in urban wastewater (liquid and solid phases) of two urban areas, residential and mixed (houses, hospital, administrations), and in two biological wastewater treatment plants (WWTPs) was assessed. The studied micropollutants were chosen according to use and as function of their physical and chemical properties in order to consider their partitioning between liquid and solid phases. Firstly, the methods for the extraction and the analysis of micropollutants in liquid and solid matrices (wastewater and treated water, suspended matter and sludge) were developed and validated. Wastewater sampling in the sewers of the two urban catchments showed some differences of the use of certain compounds according to the catchment and to the season (summer or winter). Measurements of micropollutant concentrations at the inlet and outlet of the plants, on water and sludge, allowed to assess their removal yields and revealed a difference of efficiency of the two biological WWTPs. A statistical treatment showed that there are some correlations between concentrations of micro and macropollutants (COD, ammonium and turbidity) at the inlet and at the outlet of each studied WWTPs. The effect of the target micropollutants on bacterial activity was evaluated under laboratory conditions, by toxicity tests on Escherichia coli, and by experiments on biological sludge in batch reactors
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Submitted on : Thursday, March 29, 2018 - 12:30:15 PM
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  • HAL Id : tel-01749862, version 1


Laure Pasquini. Micropolluants issus de l'activité domestique dans les eaux urbaines et leur devenir en station d'épuration. Autre. Université de Lorraine, 2013. Français. ⟨NNT : 2013LORR0087⟩. ⟨tel-01749862⟩



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