Advanced search
2 files | 1.47 MB

Distribution and mobilization of pollutants in the sediment of a constructed floating wetland used for treatment of combined sewer overflow events

(2011) WATER ENVIRONMENT RESEARCH. 83(5). p.427-439
Author
Organization
Abstract
Sediments in combined sewer overflow treatment systems may exhibit elevated pollutant concentrations. Concentrations measured in the sediment of a floating treatment wetland ranged from 0.17 to 1.6 (cadmium), 28 to 142 (copper), 10 to 33 (chromium), 50 to 141 (manganese), 5 to 20 (nickel), 50 to 203 (lead), and 185 to 804 (zinc) mg/kg dry matter and 7.4 to 17 (iron), 2 to 8 (total nitrogen), and 1.3 to 4.4 (total phosphorus) g/kg dry matter. During overflow events, the entering water volumes can disturb the sediments. A greenhouse experiment was set up to evaluate the possible mobilization of pollutants through disturbation. The disturbation did not result in an increased mobilization of cadmium, copper, chromium, nickel, lead, zinc, nitrogen, phosphorus, and organic carbon towards the pore and surface water. Calcium concentrations in the surface water increased for all sediments, as a result of release from the exchangeable sediment pool and dissolution of carbonates. Geochemical speciation modeling indicated that, in the pore water, the free ion form was the most abundant for calcium, iron, manganese, cadmium, and nickel, with its fraction increasing with time.
Keywords
mobility, metals, Visual MINTEQ, wastewater treatment, stormwater, phosphorus, nitrogen, ACID-MINE DRAINAGE, DETENTION PONDS, SUBMERSED MACROPHYTES, METAL CONCENTRATIONS, STORMWATER, REMOVAL, ACCUMULATION, GEOCHEMISTRY, FACILITIES, MOBILITY

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 1.22 MB
  • article final revised.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 248.71 KB

Citation

Please use this url to cite or link to this publication:

Chicago
Van de Moortel, Annelies, Gijs Du Laing, Niels De Pauw, and Filip Tack. 2011. “Distribution and Mobilization of Pollutants in the Sediment of a Constructed Floating Wetland Used for Treatment of Combined Sewer Overflow Events.” Water Environment Research 83 (5): 427–439.
APA
Van de Moortel, A., Du Laing, G., De Pauw, N., & Tack, F. (2011). Distribution and mobilization of pollutants in the sediment of a constructed floating wetland used for treatment of combined sewer overflow events. WATER ENVIRONMENT RESEARCH, 83(5), 427–439.
Vancouver
1.
Van de Moortel A, Du Laing G, De Pauw N, Tack F. Distribution and mobilization of pollutants in the sediment of a constructed floating wetland used for treatment of combined sewer overflow events. WATER ENVIRONMENT RESEARCH. 2011;83(5):427–39.
MLA
Van de Moortel, Annelies et al. “Distribution and Mobilization of Pollutants in the Sediment of a Constructed Floating Wetland Used for Treatment of Combined Sewer Overflow Events.” WATER ENVIRONMENT RESEARCH 83.5 (2011): 427–439. Print.
@article{1075808,
  abstract     = {Sediments in combined sewer overflow treatment systems may exhibit elevated pollutant concentrations. Concentrations measured in the sediment of a floating treatment wetland ranged from 0.17 to 1.6 (cadmium), 28 to 142 (copper), 10 to 33 (chromium), 50 to 141 (manganese), 5 to 20 (nickel), 50 to 203 (lead), and 185 to 804 (zinc) mg/kg dry matter and 7.4 to 17 (iron), 2 to 8 (total nitrogen), and 1.3 to 4.4 (total phosphorus) g/kg dry matter. During overflow events, the entering water volumes can disturb the sediments. A greenhouse experiment was set up to evaluate the possible mobilization of pollutants through disturbation. The disturbation did not result in an increased mobilization of cadmium, copper, chromium, nickel, lead, zinc, nitrogen, phosphorus, and organic carbon towards the pore and surface water. Calcium concentrations in the surface water increased for all sediments, as a result of release from the exchangeable sediment pool and dissolution of carbonates. Geochemical speciation modeling indicated that, in the pore water, the free ion form was the most abundant for calcium, iron, manganese, cadmium, and nickel, with its fraction increasing with time.},
  author       = {Van de Moortel, Annelies and Du Laing, Gijs and De Pauw, Niels and Tack, Filip},
  issn         = {1061-4303},
  journal      = {WATER ENVIRONMENT RESEARCH},
  keywords     = {mobility,metals,Visual MINTEQ,wastewater treatment,stormwater,phosphorus,nitrogen,ACID-MINE DRAINAGE,DETENTION PONDS,SUBMERSED MACROPHYTES,METAL CONCENTRATIONS,STORMWATER,REMOVAL,ACCUMULATION,GEOCHEMISTRY,FACILITIES,MOBILITY},
  language     = {eng},
  number       = {5},
  pages        = {427--439},
  title        = {Distribution and mobilization of pollutants in the sediment of a constructed floating wetland used for treatment of combined sewer overflow events},
  url          = {http://dx.doi.org/10.2175/106143010X12851009156169},
  volume       = {83},
  year         = {2011},
}

Altmetric
View in Altmetric
Web of Science
Times cited: