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Monitoring of stormwater between 2002 and 2010. What is the evolution of stormwater quality ?

Deffontis, Stéphanie and Vialle, Claire and Sablayrolles, Caroline and Breton, Audrey and Vignoles, Christian and Vignoles-Montrejaud, Mireille Monitoring of stormwater between 2002 and 2010. What is the evolution of stormwater quality ? (2016) Fresenius environmental bulletin, 25 (12a). 5650-5659. ISSN 1018-4619

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Abstract

The city of Toulouse with its separate storm sewer system is ideal for studying stormwater. That is why since 2002, three stormwater sampling campaigns were conducted. Samples were taken from the outlets of two storm drains located in heavily and moderately urbanized areas. Sampling was undertaken during wet weather and dry weather during the year 2002 for the first campaign, during the year 2007 for the second one and during the year 2010 for the last one. The overall pollution parameters were analyzed (chemical oxygen demand, biological oxygen demand, total nitrogen, ammonium, nitrate, total phosphorus, suspended solid matter, volatile suspended matter, pH, conductivity, turbidity) and the presence of some micropollutants was studied (6 PAHs, MTBE and total hydrocarbons). Results showed an evolution of stormwater quality between the three campaigns and an improvement of nutrient and suspended solid concentrations. They indicated also that dry weather had an impact on annual pollution load from separate storm sewer and that level of urbanization was also a factor whatever the year of sampling.

Item Type:Article
HAL Id:hal-02466629
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Other partners > Veolia Environnement (FRANCE)
Laboratory name:
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Deposited On:04 Feb 2020 14:27

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