Abstract

A detention pond used for the treatment of road water runoff and the flow control was tested for deicing salt storage. To that purpose, samples were collected from the pond's water (influent entering the pond and effluent exiting the pond) and sludge. NaCl and heavy metals concentrations in those samples were measured. In parallel, meteorological conditions and information about deicing salt application will be followed in order to evaluate the proportion of salt collected by the road drainage system. Na+ and Cl- exchange and transfer processes in the detention pond and their influence on the heavy metals remobilisation were assessed.

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