Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Assessing the impact of swales on receiving water quality
Swales are one type of sustainable drainage system (SuDS) which contribute to the management of water quality in receiving waterbodies. Using a semi-quantitative approach, an impact assessment procedure is applied to the residual water quality that is carried forward to surface waters and groundwaters following treatment within a swale. Both volumetric and pollutant distributions are considered as stormwater passes through the swale system. The pollutant pathways followed by TSS, nitrate, chloride, metals (Cd, Cu, Pb, Zn) and polyaromatic hydrocarbons (PAHs) are determined for a swale receiving highway runoff. For TSS, metals and PAHs between 20% and 29% of the total mean influent pollutant load is predicted to be directed to infiltration through the underlying soils compared to between 4% and 16% of chloride and nitrate. Although surface water impacts are deemed possible, the discharges of swales to groundwaters are assessed to represent a negligible impact for effectively maintained systems.
Assessing the impact of swales on receiving water quality
Swales are one type of sustainable drainage system (SuDS) which contribute to the management of water quality in receiving waterbodies. Using a semi-quantitative approach, an impact assessment procedure is applied to the residual water quality that is carried forward to surface waters and groundwaters following treatment within a swale. Both volumetric and pollutant distributions are considered as stormwater passes through the swale system. The pollutant pathways followed by TSS, nitrate, chloride, metals (Cd, Cu, Pb, Zn) and polyaromatic hydrocarbons (PAHs) are determined for a swale receiving highway runoff. For TSS, metals and PAHs between 20% and 29% of the total mean influent pollutant load is predicted to be directed to infiltration through the underlying soils compared to between 4% and 16% of chloride and nitrate. Although surface water impacts are deemed possible, the discharges of swales to groundwaters are assessed to represent a negligible impact for effectively maintained systems.
Assessing the impact of swales on receiving water quality
Revitt, D. Michael (Autor:in) / Ellis, J. Bryan / Lundy, Lian
Urban water journal ; 14
2017
Aufsatz (Zeitschrift)
Englisch
System effectiveness , Polyaromatic hydrocarbons , Management , Pathways , Runoff , Influents , Receiving , Surface water , Storm sewers , impact assessment approach , Drainage management , Metals , Swales , pollutant removal , Pollutants , Soils , Lead (metal) , Receiving waters , Chloride , receiving water quality , Soil (material) , Aromatic hydrocarbons , Nitrate , Discharge , Water pollution , Drainage systems , Copper , Zinc , Infiltration , Quality , Polycyclic aromatic hydrocarbons , groundwater , Water quality , Water management , Drainage , Cadmium , Pollution load , stormwater , Sustainability , Stormwater , Nitrates , Hydrocarbons
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