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Survival, transport and dissemination of Escherichia coli and enterococcci in a fissured environment. Study of a flood in a karstic aquifer
- Source :
- Journal of Applied Microbiology. 84:431-438
- Publication Year :
- 1998
- Publisher :
- Oxford University Press (OUP), 1998.
-
Abstract
- In fissured aquifers, hydrodynamic phenomena combined with a network of permeable fissures imparts varying degrees of vulnerability depending on the type of contaminant. The study presented here examines the impact on a karst aquifer of a river which receives effluents from a sewage treatment plant just upstream from the point of recharge. This recharge constitutes a source of bacteriological and chemical pollution. The aquifer is accessible by boreholes at discrete points, facilitating investigation of the evolution of three of the contaminants characteristic of treatment station effluents, NH4+ and two biological contaminants with different survival capacities. The study was undertaken both under normal climatic conditions and during a flood occurring after a long dry period. The rate of infiltration, of subsurface transport, and of dissemination of contaminants into a zone usually protected from contamination was recorded. The results confirm the vulnerability of fissured aquifers to contamination.
- Subjects :
- Hydrology
Geological Phenomena
geography
geography.geographical_feature_category
Sewage
Flood myth
Water Pollution
Geology
Aquifer
General Medicine
Groundwater recharge
Karst
Applied Microbiology and Biotechnology
Calcium Carbonate
Disasters
Infiltration (hydrology)
Escherichia coli
Environmental science
Sewage treatment
Water Microbiology
Water pollution
Enterococcus
Groundwater
Biotechnology
Subjects
Details
- ISSN :
- 13652672 and 13645072
- Volume :
- 84
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Microbiology
- Accession number :
- edsair.doi.dedup.....6ea6380eafdbfea266936fe26f6d503c