| Title | Intensive monitoring of conventional and surrogate quality parameters in a highly urbanized river affected by multiple combined sewer overflows |
| Abstract | The paper reports results of four intensive campaigns carried out on the Seveso River (Milan
metropolitan area, Italy) between 2014 and 2016, during intense precipitation events. Laboratory
analyses were coupled with on-site, continuous measurements to assess the impact of pollutants on
water quality based on both conventional and surrogate parameters. Laboratory data included total
suspended solids, caffeine, total phosphorus and nitrogen, and their dissolved forms. Screening of
trace metals (Cr, Cu, Pb, Ni, Cd) and PBDEs (polybromodiphenylethers) was carried out. Continuous
measurements included water level, physico-chemical variables and turbidity. Nutrient
concentrations were generally high (e.g. average total phosphorus>1,000 ?g/L) indicating strong
sewage contributions. Among monitored pollutants Cr, Cu, Pb, and Cd concentrations were well
correlated to TSS, turbidity and discharge, being bound mostly to suspended particulate matter.
A different behavior was found for Ni, that showed an early peak occurring before the flow peak, as
result of first flush events. PBDEs correlated well to nutrient concentrations, showing the highest
peaks soon after activation of the combined sewer overflows, likely because of its accumulation in
sewers. In addition to showing the existing correlations between quality parameters, the paper
highlights the importance of surrogate parameters as indicators of anthropic pollution inputs. |
| Source | Water science and technology: water supply (Print) |
| Keywords | caffeinecombined sewer overflowscontaminantsmonitoringsurrogate parametersPBDE's |
| Journal | Water science and technology: water supply (Print) |
| Editor | IWA Publishing, London, |
| Year | 2019 |
| Type | Articolo in rivista |
| DOI | 10.2166/ws.2018.146 |
| Authors | D. Copetti, L. Marziali, G. Viviano, L. Valsecchi, L. Guzzella, A. G. Capodaglio, G. Tartari, S. Polesello, S. Valsecchi, V. Mezzanotte, F. Salerno |
| Text | 398799 2019 10.2166/ws.2018.146 caffeine combined sewer overflows contaminants monitoring surrogate parameters PBDE s Intensive monitoring of conventional and surrogate quality parameters in a highly urbanized river affected by multiple combined sewer overflows D. Copetti, L. Marziali, G. Viviano, L. Valsecchi, L. Guzzella, A. G. Capodaglio, G. Tartari, S. Polesello, S. Valsecchi, V. Mezzanotte, F. Salerno National Research Council of Italy Water Research Institute,, National Research Council of Italy Water Research Institute,National Research Council of Italy Water Research Institute, National Research Council of Italy Water Research Institute, National Research Council of Italy Water Research Institute, Department of Civil Engineering Architecture University of Pavia, National Research Council of Italy Water Research Institute, National Research Council of Italy Water Research Institute, National Research Council of Italy Water Research Institute, Department of Earth and Environmental Sciences Universita degli Studi di Milano Bicocca, National Research Council of Italy Water Research Institute The paper reports results of four intensive campaigns carried out on the Seveso River Milan metropolitan area, Italy between 2014 and 2016, during intense precipitation events. Laboratory analyses were coupled with on site, continuous measurements to assess the impact of pollutants on water quality based on both conventional and surrogate parameters. Laboratory data included total suspended solids, caffeine, total phosphorus and nitrogen, and their dissolved forms. Screening of trace metals Cr, Cu, Pb, Ni, Cd and PBDEs polybromodiphenylethers was carried out. Continuous measurements included water level, physico chemical variables and turbidity. Nutrient concentrations were generally high e.g. average total phosphorus>1,000 g/L indicating strong sewage contributions. Among monitored pollutants Cr, Cu, Pb, and Cd concentrations were well correlated to TSS, turbidity and discharge, being bound mostly to suspended particulate matter. A different behavior was found for Ni, that showed an early peak occurring before the flow peak, as result of first flush events. PBDEs correlated well to nutrient concentrations, showing the highest peaks soon after activation of the combined sewer overflows, likely because of its accumulation in sewers. In addition to showing the existing correlations between quality parameters, the paper highlights the importance of surrogate parameters as indicators of anthropic pollution inputs. Published version https //dx.doi.org/10.2166/ws.2018.146 Articolo in rivista IWA Publishing 1606 9749 Water science and technology water supply Print Water science and technology water supply Print Water sci. technol. water supply Print Water science and technology water supply. Print Water supply Print Print lucia.valsecchi VALSECCHI LUCIA stefano.polesello POLESELLO STEFANO liciamaria.guzzella GUZZELLA LICIA MARIA diego.copetti COPETTI DIEGO franco.salerno SALERNO FRANCO laura.marziali MARZIALI LAURA gianni.tartari TARTARI GIANNI saramaria.valsecchi VALSECCHI SARA MARIA |
