CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Modelling of different measures for improving removal in a storm pond

K. Jansons ; Gilbert Svensson (Institutionen för bygg- och miljöteknik, Vatten Miljö Teknik) ; D. Karlsson ; L. G. Gustafsson ; Jonas German (Institutionen för bygg- och miljöteknik, Vatten Miljö Teknik)
Water Science and Technology (0273-1223). Vol. 52 (2005), 5, p. 105-112.
[Artikel, refereegranskad vetenskaplig]

The effect of retrofitting an existing pond on removal efficiency and hydraulic performance was modelled using the commercial software Mike21 and compartmental modelling. The Mike21 model had previously been calibrated on the studied pond. Installation of baffles, the addition of culverts under a causeway and removal of an existing island were all studied as possible improvement measures in the pond. The subsequent effect on hydraulic performance and removal of. suspended solids was then evaluated. Copper, cadmium, BOD, nitrogen and phosphorus removal were,also investigated for that specific improvement measure showing the best results. Outcomes of this study reveal that all measures increase the removal efficiency of suspended solids. The hydraulic efficiency is improved for all cases, except for the case where the island is removed. Compartmental modelling was also used to evaluate hydraulic performance and facilitated a better understanding of the way each of the different measures affected the flow pattern and performance. It was concluded that the installation of baffles is the best of the studied measures resulting in a reduction in the annual load on the receiving lake by approximately 8,000 kg of suspended solids (25% reduction of the annual load), 2 kg of copper (10% reduction of the annual load) and 600 kg of BOD (10% reduction of the annual load).

Nyckelord: compartmental modelling, numerical model, removal efficiency, retrofitting, stormwater pond, pollutant removal, detention, wetland

Denna post skapades 2010-02-25.
CPL Pubid: 114970


Institutioner (Chalmers)

Institutionen för bygg- och miljöteknik, Vatten Miljö Teknik



Chalmers infrastruktur