Leaching of additives from construction materials to urban storm water runoff

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  • Mike Burkhardt, Studienævnet for historie, Danmark
  • S. Zuleeg, Department of Urban Water Management, Eawag: Swiss Federal Institute of Aquatic Science and Technology, Düsseldorf, Schweiz
  • M. Boller, Department of Urban Water Management, Eawag: Swiss Federal Institute of Aquatic Science and Technology, Düsseldorf, Schweiz
  • R. Vonbank, Swiss Federal Institute for Material Testing and Research, Dübendorf, Schweiz
  • P. Schmid, Swiss Federal Institute for Material Testing and Research, Dübendorf, Schweiz
  • S. Hean, Swiss Federal Institute for Material Testing and Research, Dübendorf, Schweiz
  • X. Lamani, Swiss Federal Institute for Material Testing and Research, Dübendorf, Schweiz
  • Kai Bester
  • M. Boller
Urban water management requires further clarification about pollutants in storm water. Little is
known about the release of organic additives used in construction materials and the impact of
these compounds to storm water runoff. We investigated sources and pathways of additives used
in construction materials, i.e., biocides in facades’ render as well as root protection products in
bitumen membranes for rooftops. Under wet-weather conditions, the concentrations of diuron,
terbutryn, carbendazim, irgarol®1051 (all from facades) and mecoprop in storm water and receiving
water exceeded the predicted no-effect concentrations values and the Swiss water quality
standard of 0.1 μg/L. Under laboratory conditions maximum concentrations of additives were in the
range of a few milligrams and a few hundred micrograms per litre in runoff of facades and bitumen
membranes. Runoff from aged materials shows approximately one to two orders of magnitude
lower concentrations. Concentrations decreased also during individual runoff events. In storm
water and receiving water the occurrence of additives did not follow the typical first flush model.
This can be explained by the release lasting over the time of rainfall and the complexity of the
drainage network. Beside the amounts used, the impact of construction materials containing
hazardous additives on water quality is related clearly to the age of the buildings and the separated
sewer network. The development of improved products regarding release of hazardous additives is
the most efficient way of reducing the pollutant load from construction materials in storm
water runoff.
OriginalsprogEngelsk
TidsskriftWater Science & Technology
Vol/bind63
Nummer9
Sider (fra-til)1974-1982
ISSN0273-1223
DOI
StatusUdgivet - 2011

    Forskningsområder

  • additives, biocides, construction materials, leaching, storm water pollution, terbutryn

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