التفاصيل البيبلوغرافية
| العنوان: |
Impacts of Salinity on Saint-Augustin Lake, Canada: Remediation Measures at Watershed Scale |
| المؤلفون: |
Gaëlle Guesdon, Ana De Santiago-Martín, Sébastien Raymond, Hamdi Messaoud, Arthur Michaux, Samuel Roy, Rosa Galvez |
| المصدر: |
Water; Volume 8; Issue 7; Pages: 285 |
| بيانات النشر: |
Multidisciplinary Digital Publishing Institute |
| سنة النشر: |
2016 |
| المجموعة: |
MDPI Open Access Publishing |
| مصطلحات موضوعية: |
de-icing salt, trace metals, surface water, groundwater, watershed, remediation, ecoengineering |
| جغرافية الموضوع: |
agris |
| الوصف: |
Winter road network management is a source of anthropogenic salinity in the Saint-Augustin Lake watershed (Quebec City, QC, Canada). To prevent the potential impact caused by road runoff involving de-icing salts (NaCl) and trace metals (Cd and Pb) on the watershed, a full-scale treatment chain system (including a detention basin, a filtering bed, and a constructed wetland) was built. Average Cl and Na concentrations in groundwater were higher in wells affected by road network (125 mg/L Cl and 64 mg/L Na) than in control wells (13 mg/L Cl and 33 mg/L Na) suggesting a contamination by de-icing salts. The monitoring of influent and effluent surface water in the treatment system has shown a seasonal dependence in NaCl concentrations and electrical conductivity values, being the highest in summer, linked with the lower precipitation and higher temperature. Concentration ranges were as follows: 114–846 mg/L Na and 158–1757 mg/L Cl (summer) > 61–559 mg/L Na and 63–799 mg/L Cl (spring and autumn). The treatment system removal efficiency was significant, however with seasonal variations: 16%–20% Cl, 3%–25% Na, 7%–10% Cd and 7%–36% Pb. The treatment system has shown an interesting potential to mitigate the impact of anthropogenic salinity at watershed scale with higher expected performances in the subsequent years of operation. |
| نوع الوثيقة: |
text |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
Hydrology; https://dx.doi.org/10.3390/w8070285 |
| DOI: |
10.3390/w8070285 |
| الاتاحة: |
https://doi.org/10.3390/w8070285 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: |
edsbas.5572EDA5 |
| قاعدة البيانات: |
BASE |