Treatment of polluted road run-off water: Problems and possibilities

Treatment of polluted road run-off water : Problems and possibilities

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Warzaw : Warsaw Agricultural University Press, 2004
2004
English.
In: Annals of Warsaw Agricultural University / Land Reclamation. - Warzaw : Warsaw Agricultural University Press. - 0208-5771. ; :35, s. 55-64

Abstract Subject headings

The legal aspects for conventional water production and treatment are clearly defined and not ambiguous. This is not the case for handling and treatment of run-off water. In the EU directive 1991/271/EEC run-off water is defined as sewage water. The EU Water Directive refers to 1991/271/EEC and points to run-off water as a pollutant source for ground water. Elevated levels of pollutant can be found in run-off water from catchment areas with dense traffic loads. Depending on road maintenance, use of studded tires, type of pavement, traffic flow, velocity, type of vehicle, residential and industrial areas, tunnels the degree of mobility of the pollutants will vary in the ambient air and the run-off water. An aspect that only to some extent has been elaborated on is the influence of pavement types and its wear with regard to the mobility of the pollutants. A treatment technique commonly used in many countries is storm water ponds. The pollutant removal efficiency varies for different ponds, due to different specific pond areas, i.e. pond area in relation to catchment area. Ponds act as sedimentation basins, collecting particles and bounded pollutants. However, the solute transport of e.g. heavy metals should be trapped by other means. For that purpose a filtration unit has been developed and tested in Sweden.

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