Field Test of Grass-Swale Performance in Removing Runoff Pollution

Field Test of Grass-Swale Performance in Removing Runoff Pollution

The ability of grassed swales to remove pollutants from storm runoff was field tested in Taiwan and Virginia. This Best Management Practice (BMP) is a low-cost technique appropriate for controlling runoff from highways and agricultural lands. A highway median swale was tested in Virginia, while agri...

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Veröffentlicht in:Journal of water resources planning and management 2001-05, Vol.127 (3), p.168-168
Hauptverfasser: Lu, Shaw L, Kuo, Jan-Tai, Fassman, Elizabeth A, Pan, Henry
Format: Artikel
Sprache:eng
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Zusammenfassung:The ability of grassed swales to remove pollutants from storm runoff was field tested in Taiwan and Virginia. This Best Management Practice (BMP) is a low-cost technique appropriate for controlling runoff from highways and agricultural lands. A highway median swale was tested in Virginia, while agricultural swales were tested in Taiwan. Pollutant removal efficiencies ranged from 14-99% for total suspended solids (TSS), chemical oxygen demand (COD), total nitrogen (TN), and total phosphorus (TP). Design variables such as length, longitudinal slope, and the use of check dams explain the variations in results.
ISSN:0733-9496