Abstract—In this paper a mathematical model for prediction
of phosphorus removal with total phosphorus (TP) as the check
index in horizontal subsurface flow constructed wetlands was
developed. The model considered the water flow and
transportation, diffusion, dispersion and biochemical reaction
of phosphorus. The physical and biochemical parameters of the
model were calibrated by one set of the experimental data. Then
the model was valided by another set of the experimental data.
The predicted effluent TP concentrations were well agreed with
the actual effluent TP concentrations. The model can be used to
simulate the phosphorus removal effect in horizontal
subsurface flow constructed wetlands. The average removal
rate of TP for domestic sewage in planted and unplanted
constructed wetland with high concentration of influent were
88.22% and 85.06% respectively, while their removal rates
were 94.23% and 90.77% respectively with low concentration of
influent. So vegetation had improvement effect on TP removal.
Index Terms—Horizontal subsurface flow constructed
wetlands, mathematical model, numerical method, phosphorus
removal.
L. H. Gao and L. Xie are with Pearl River Water Research Institute,
Guangzhou 510611, China (e-mail: cyxlong@163.com).
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Cite:Longhua Gao and Long Xie, "Modelling Phosphorus Removal in Horizontal Subsurface Flow Constructed Wetlands," Journal of Clean Energy Technologies vol. 2, no. 2, pp. 104-107, 2014.
