| Records |
| Author |
Goulet, R.R. |
| Title |
Changes in dissolved and total Fe and Mn in a young constructed wetland: Implications for retention performance |
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Journal Article |
| Year |
2001 |
Publication |
Ecological Engineering |
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| Volume |
17 |
Issue |
4 |
Pages |
373-384 |
| Keywords |
mine water treatment |
| Abstract |
Surface-flow wetlands are generally considered sinks for Fe and Mn but they may also export and affect the partitioning of these metals. This study was undertaken to evaluate the effect of a young constructed wetland on the retention and transformation of both dissolved and particulate Fe and Mn. Duplicate water samples were collected every three days at the inlet and outlet structures of the Monahan Wetland, Kanata, Ontario, from spring of 1997 to 1999. While on a yearly basis the wetland showed significant retention of che dissolved phase, the retention of total Fe and Mn was poor. There were strong seasonal differences in retention and, during the winter, the wetland was a source. The wetland transformed dissolved into particulate Fe and Mn from spring to fall whereas during the winter, dissolved Fe and Mn were released. Changes in pH, alkalinity and temperature could explain 11% and 40% of the outlet variation in the ratio of dissolved to total Fe and Mn respectively. Furthermore, from spring to late summer, planktonic algal biomass was negatively related to the ratio of dissolved to total Fe and Mn implying a role in Fe and Mn transformations in young wetlands where emergent and submerged vegetation have yet to dominate the system. (C) 2001 Elsevier Science B.V. All rights reserved. |
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Changes in dissolved and total Fe and Mn in a young constructed wetland: Implications for retention performance; Wos:000169881900004; Times Cited: 5; ISI Web of Science |
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| Call Number |
CBU @ c.wolke @ 17050 |
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124 |
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| Author |
Larsen, H.P. |
| Title |
Chemical Treatment Of Metal-Bearing Mine Drainage |
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Journal Article |
| Year |
1973 |
Publication |
J. Water Poll. Control Fed. |
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45 |
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8 |
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1682-1695 |
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mine water treatment |
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Chemical Treatment Of Metal-Bearing Mine Drainage; Wos:A1973q499100009; Times Cited: 12; ISI Web of Science |
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CBU @ c.wolke @ 9257 |
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100 |
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| Author |
Wiseman, I. |
| Title |
Constructed wetlands for minewater treatment |
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RPT |
| Year |
2002 |
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125 |
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Sewage Ecology Constructed wetlands — Wales Mineral industries — Waste disposal Mine water Water quality management — Wales Pelenna minewaters Water pollution & oil pollution Hydrology & limnology |
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Environment Agency |
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Bristol, England |
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Constructed wetlands for minewater treatment; Opac |
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CBU @ c.wolke @ 7122 |
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207 |
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Laspidou, C.S. |
| Title |
Constructed wetlands technology and water quality improvement: Recent advances |
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Journal Article |
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2005 |
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Proceeding of the 9th International Conference on Environmental Science and Technology Vol B – Poster Presentations |
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B503-B508 |
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mine water treatment |
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Today's demands for improved water quality in receiving waters are widespread and require the implementation of systems that are natural, low-cost and minimal-maintenance that could effectively treat polluted discharges. Wetlands are such systems and are recently receiving a lot of attention from scientists, ecologists and engineers, as they are deemed appropriate for reducing the impact of effluent and run-off on receiving waters. Since a large part of natural wetlands have been lost-about 53% of them in the United States from the 1780s to the 1980s-management options for improving receiving water quality, water reclamation and reuse involve the application of constructed wetlands technology. |
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Constructed wetlands technology and water quality improvement: Recent advances; Isip:000237755500082; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 16966 |
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152 |
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| Author |
Lee, B.H. |
| Title |
Constructed wetlands: Treatment of concentrated storm water runoff (Part A) |
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Journal Article |
| Year |
2006 |
Publication |
Environmental Engineering Science |
Abbreviated Journal |
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| Volume |
23 |
Issue |
2 |
Pages |
320-331 |
| Keywords |
mine water treatment |
| Abstract |
The aim of this research was to assess the treatment efficiencies for gully pot liquor of experimental vertical-flow constructed wetland filters containing Phragmites australis (Cav.) Trin. ex Steud. (common reed) and filter media of different adsorption capacities. Six out of 12 filters received inflow water spiked with metals. For 2 years, hydrated nickel and copper nitrate were added to sieved gully pot liquor to simulate contaminated primary treated storm runoff. For those six constructed wetland filters receiving heavy metals, an obvious breakthrough of dissolved nickel was recorded after road salting during the first winter. However, a breakthrough of nickel was not observed, since the inflow pH was raised to eight after the first year of operation. High pH facilitated the formation of particulate metal compounds such as nickel hydroxide. During the second year, reduction efficiencies of heavy metal, 5-days at 20 degrees C N-Allylthiourea biochemical oxygen demand (BOD) and suspended solids (SS) improved considerably. Concentrations of BOD were frequently < 20 mg/L. However, concentrations for SS were frequently > 30 mg/L. These are the two international thresholds for secondary wastewater treatment. The BOD removal increased over time due to biomass maturation, and the increase of pH. An analysis of the findings with case-based reasoning can be found in the corresponding follow-up paper (Part B). |
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Constructed wetlands: Treatment of concentrated storm water runoff (Part A); Wos:000236600700007; Times Cited: 0; ISI Web of Science |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 16932 |
Serial |
112 |
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