Stable water isotopes as a tool for assessing groundwater infiltration in sewage networks in cold climate conditions
| Autor: | Axumawit Tesfamariam, Pekka M. Rossi, Hannu Marttila, Elisangela Heiderscheidt, Heini Postila, Stefano Zilio |
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| Rok vydání: | 2022 |
| Předmět: |
Environmental Engineering
Sewage networks δ18O Sewage Nordic climate Inflow Management Monitoring Policy and Law Isotopes Infiltration/inflow Groundwater Waste Management and Disposal Hydrology Urban water Nitrogen Isotopes business.industry Water Infiltration/Inflow General Medicine Cold Climate Infiltration (HVAC) Snow Environmental science business Surface water Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Journal of Environmental Management. 302:114107 |
| ISSN: | 0301-4797 |
| DOI: | 10.1016/j.jenvman.2021.114107 |
| Popis: | Effective identification and quantification of groundwater (GW) infiltration into sewage collection networks represents an important step towards sustainable urban water management. In many countries, including northern regions, sewage networks are aging to the point where renovation is needed. This study focused on the utilization of stable water isotopes as tracer substances for GW infiltration detection. The main objectives were to investigate the validity of the method for quantifying GW infiltration in cold climate conditions and to test the robustness of this method under assumed low GW infiltration rates. In general, the stable water isotopes (δ¹⁸O) produced reliable results regarding origin identification and quantification of GW infiltration rates in winter conditions (continuous below zero temperatures and snow accumulation during preceding months). The 1.6‰ distinction between the δ¹⁸O isotope composition signals of the two water sources (drinking water from river and groundwater) in the studied network was sufficient to allow source separation. However, a larger distinction would reduce the uncertainties connected to GW-fraction identification in situations where low GW infiltration rates ( |
| Databáze: | OpenAIRE |
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