Sammanfattning

During the 1990s there has been a growing interest in (re)constructed wetlands and ponds for treatment of agricultural runoff, sewage water, and stormwater. Some of these facilities, however, are poorly designed in terms of hydrological and hydraulic performance, which strongly affects their treatment capacity. This paper gives an overview of the present knowledge regarding pond hydraulics in terms of effective volume ratio and dispersion. The importance of these parameters is demonstrated by modelling of nitrogen removal in 13 ponds of different design. The results show that effective volume ratio has a clear influence, which increases when removal rate coefficients increase, while dispersion is of minor importance for removal efficiency. Finally, the concept of hydraulic efficiency is discussed in the light of these results. (C) 2004 Elsevier B.V. All rights reserved

Nyckelord

design; efficiency; hydraulic; nitrogen; performance; ponds; Tank-in-series model; wetlands

Publicerad i

Ecological Engineering
2003, Volym: 21, nummer: 4-5, sidor: 259-269
Utgivare: ELSEVIER SCIENCE BV

SLU författare

• Persson, Jesper

  • Institutionen för landskapsarkitektur, planering och förvaltning, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Fisk- och akvakulturforskning
Landskapsarkitetktur


Publikationens identifierare

DOI: https://doi.org/10.1016/j.ecoleng.2003.12.004

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/2853