In other words, any grass added to the surface of a swale system would represent a positive influence on metal uptake. However centipede is possibly be the best choice for its resilience to drought, its nutritional frugality, and its greater ability to accumulate key contaminant metals such as Cu, Zn and Pb.
This study, on innovative methods for the capture of metals from stormwater, mainly focused on two major areas of investigation: media filters and swales. Twelve media were chosen for initial evaluation. The three best performing media: peat-sand mix, compost, and zeolite were then selected for in-depth study. The results of this investigation emphasize the importance of characterizing the stormwater before selecting a treatment media since the type and quantity of metals, pH, and other runoff characteristics can vary a great deal between sites.
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