Sustained phosphorus removal from sew age by artifical wetlands - M/03/5085, SB/1/20; LWRRDC Project number MDR4
MDFRC Technical Report
The short term capacity for phosphorus in plan led artificial wetlands, and the equilibrium orthophosphate concentration in their effluent are determined by the sorptive potential of the gravel. The long term capacity is determined by the plants, which can have seasonal fluctuations in uptake. The speed of uptake to gravel is diffusion controlled. The major orthophosphate sorption sites are iron, associated with the biofilm. In reducing conditions when Fe (1111) is reduced to Fe (111) the equilibrium orthophosphate concentrations rise greatly. Suggestions for managing constructed wetlands so as 10 sustain maximal phosphorus removal are discussed in a separate confidential report.
MDFRC funding agency: Land and Water Resources Research and Development Corporation
MDFRC client: Land and Water Resources Research and Development Corporation
Open Access. This report has been reproduce with the publishers permission.
Permission to reproduce this report must be sought from the publisher.
Copyright (1994) Murray-Darling Freshwater Research Centre.