Wastewater treatment by infiltration percolation: a case study
- Mottier, V. Institut d'Aménagement des Terres et des Eaux, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne EPFL, Suisse
- Brissaud, F. Hydrosciences (UM2-CNRS-IRD), Université Montpellier II, F-34095 Montpellier Cédex 05, France
- Nieto, P. Instituto Technològico Geominero de Espana, E-28003 Madrid, Espagne
- Alamy, Z. Bureau de Recherches Géologiques et Minières, F-45060 Orléans Cédex, France
Published in:
- Water Science and Technology. - IWA Publishing. - 2000, vol. 41, no. 1, p. 77-84
English
A 1700 p.e. pilot infiltration percolation plant treating the sewage of Mazagon, a seaside resort in the South of Spain, is investigated. Primary effluents, intermittently applied over twin 200 m2 infiltration basins, percolate down to the aquifer through unsaturated dune sands. Each application sequence delivers a volume of 0.25 m3 per m2 of infiltration basin. Analyses of the water sampled at five depths ranging from 0.3 to 2.0 m below the infiltration surface show that the oxidation performance of the plant is highly dependent on the applied load. Monitoring the oxygen content in the air phase of the vadose zone allows to determine the kinetics of the oxygen stock recovery and the oxidation capacity of the plant. Disappointing removal of faecal coliforms and streptococci is attributed to high pore water velocities due to infiltration heterogeneity and the high water height applied during each feeding sequence.
- Language
-
- English
- Open access status
- green
- Identifiers
-
- DOI 10.2166/wst.2000.0014
- ISSN 0273-1223
- Persistent URL
- https://folia.unifr.ch/global/documents/133243
Statistics
Document views: 11
File downloads:
- fulltext.pdf: 0