Monitoring infiltration under a real on-site treatment system of domestic wastewater and evaluation of soil transfer function (Paris Basin, France)
| Autor: | Olivier Fouché, Behzad Nasri, David Ramier |
|---|---|
| Přispěvatelé: | Conservatoire National des Arts et Métiers - CNAM (FRANCE), Centre d'études et d'expertise sur les risques, l'environnement, la mobilité et l'aménagement - CEREMA (FRANCE), Ecole des Ponts ParisTech (FRANCE), Laboratoire Géomatique et foncier (GeF), Conservatoire National des Arts et Métiers [CNAM] (CNAM), laboratoire Eau Environnement et Systèmes Urbains (LEESU), AgroParisTech-École des Ponts ParisTech (ENPC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Equipe-projet TEAM (Cerema Equipe-projet TEAM), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (Cerema), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Hydrodynamic properties
Soil test Soil texture Mécanique des fluides Hydraulic conductivity Soil Science Soil science Pedotransfer function [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] Field capacity Environmental Chemistry Water content Earth-Surface Processes Water Science and Technology Hydrology Global and Planetary Change Macropore Geology Pollution 6. Clean water Colluvium soil Infiltration (hydrology) Soil water |
| Zdroj: | Environmental Earth Sciences Environmental Earth Sciences, Springer, 2014, vol. 73 (n° 11), pp. 7435-7444. ⟨10.1007/s12665-014-3917-y⟩ |
| ISSN: | 1866-6280 1866-6299 |
| Popis: | International audience; The problematic of evacuation of treated domestic wastewater has been investigated through a field study on a real undrained on-site treatment system (UOSTS). This system imposes a special mode of infiltration into the soil which is irregular. In order to characterize the hydraulic properties of this type of flow, soil texture, organic matter content and in situ saturated hydraulic conductivity (Ks) were measured for each of 15 m² of soil under the bottom of the UOSTS. In addition, the variation of water table and rainfall and the evolution of soil moisture and matrix potential were monitored by using the sensors implanted under the system. The mean of the measured Ks is 100 times higher than values deduced from empirical pedotransfer functions based on the soil matrix properties. The measured Ks vary greatly on the 15 m² area. Moreover, large and variable quantities of stone fragments (> 2 mm) were found in the soil samples. These results suggest that a heterogeneous flow may occur in the stony soil via the macropores which shortcut the soil matrix. Indeed, according to their position, a non-uniform reaction of the sensors to the infiltration of treated wastewater was observed. In addition, two daily periodic peaks of water consumption in the house have been detected by the water content and tensiometer probes, confirming that the saturation rate is controlled by infiltration and not the water table. |
| Databáze: | OpenAIRE |
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