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Particle removal in detention ponds modelled for a year of successive rain events

Thomas J. R. Pettersson (Institutionen för vattenförsörjnings- och avloppsteknik) ; Gilbert Svensson (Institutionen för vattenförsörjnings- och avloppsteknik)
In: Proc. Novatech 1998, 3rd international conference on innovative technologies in urban storm drainage, Lyon, France, 4-6 May 1998 Vol. 1 (1998), p. 567-574.
[Konferensbidrag, refereegranskat]

The aim of this study was to model the removal of pollution in small open stormwater detention ponds by a simple method of particle settling. Simulations were made with a rain series for a normal hydrological year selected from a 19-year long rainfall series. TSS removal calculations were based on the US EPA-method. Measured TSS concentrations from the Järnbrott detention pond were used for comparison with the modelled concentrations. The model work showed that the removal efficiency is strongly dominated by inter-event settling. Removal efficiency may be improved by increasing the specific pond area up to 150 m2/ha. A consideration of the particle density has to be made since the removal efficiency is affected by low densities, often seen for urban runoff sediments.

Nyckelord: detention pond, modelling, particle removal, rain series, stormwater



Denna post skapades 2007-09-11.
CPL Pubid: 47534

 

Institutioner (Chalmers)

Institutionen för vattenförsörjnings- och avloppsteknik (1955-2000)

Ämnesområden

Vattenteknik
Annan samhällsbyggnadsteknik
Miljöteknik

Chalmers infrastruktur