Floating treatment wetland influences on the fate and removal performance of phosphorus in stormwater retention ponds

摘要

A field trial comparing the fate and removal performance of phosphorus (P) in two parallel stormwater retention ponds, one retrofitted with a Floating Treatment Wetland (FTW) and one without any vegetation (a control), was carried out near Auckland, New Zealand. Results suggest that inclusion of a FTW would significantly improve P removal efficiency exhibiting 27% lower TP outlet event mean concentrations (EMCs) than a conventional retention pond. The low SRP inlet EMC did not allow the performance of either pond to be differentiated.