Effect of Media Type and Number of Dry Days on the Performance of Packed-bed Wetland
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This paper deals with how type of media and number of dry days(NDDs) in the packed-bed wetlands for stormwater treatment affect their performance. Depending on the media, there are some clear features contributing to the reduction of specific pollutants in the stormwater. In the first place, effect of NDDs on the effluent TSS, TN, and TP concentrations was significant, indicating that more time or chance for the treatment were provided as an increase in the number of passage through the media through recycling except for COD in woodchip wetland due to the release of organics by itself and NO3--N in pumice and volcanic gravel wetlands due to the lack of carbon source. However, It was found out that woodchip wetland was the best one in reducing nitrogen due to the abundant carbon supplied from the woodchip and pumice wetland was the better one due to its nice adsorption capacity. Removal efficiencies of TSS by pumice wetland and volcanic gravel wetland were similar while wetland filled with woodchip was worse due to the debris by itself.
Abstract
This paper deals with how type of media and number of dry days(NDDs) in the packed-bed wetlands for stormwater treatment affect their performance. Depending on the media, there are some clear features contributing to the reduction of specific pollutants in the stormwater. In the first place, effect of NDDs on the effluent TSS, TN, and TP concentrations was significant, indicating that more time or chance for the treatment were provided as an increase in the number of passage through the media through recycling except for COD in woodchip wetland due to the release of organics by itself and NO3--N in pumice and volcanic gravel wetlands due to the lack of carbon source. However, It was found out that woodchip wetland was the best one in reducing nitrogen due to the abundant carbon supplied from the woodchip and pumice wetland was the better one due to its nice adsorption capacity. Removal efficiencies of TSS by pumice wetland and volcanic gravel wetland were similar while wetland filled with woodchip was worse due to the debris by itself.
참고문헌 (33)
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