Abstract
This paper reviewed the development of bioretention systems with a focus on its abilities to control phosphorus in stormwater. Bioretention systems takes full advantage of the matrix-microbes-plant system with simultaneous removal of organic matter, nitrogen, phosphorus, total suspended solids (TSS), heavy metal, and pathogens. But phosphorus removal has been found inconsistent in bioretention systems, which can be observed phosphorus leaching in some systems. The phosphorus forms in stormwater, the distribution and transfer pathways of phosphorus in bioretention system need to be figured out and simulated in order to solve the phosphorus leaching. Some new matrix materials, such as aluminum-based water treatment residual, were also employed to adsorb and trap the phosphorus in stormwater. The latest study progress and further research needs of bioretention systems were summarized.
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