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Titre :
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The effectiveness of capillary barriers to hydraulically isolate salt contaminated soils
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|
Auteurs :
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D. Rooney ;
K. Brown ;
J. Thomas
|
|
Type de document :
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article/chapitre/communication
|
|
Année de publication :
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1998
|
|
Format :
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p. 403-411
|
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Langues:
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= Anglais
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Catégories :
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SCIENCES FONDAMENTALES ET APPLIQUEES
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Mots-clés:
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SALINITE DU SOL
;
BARRIERE
;
AMELIORATION DU SOL
;
DECONTAMINATION
;
SOL SALIN
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Résumé :
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The use of capillary barriers overlayed with topsoil to hydraulically isolate highly saline soils was investigated in a greenhouse study. Capillary barriers of 8 cm or greater thickness effectively prevented salt from migrating upward into the topsoil, thus allowing vegetation to be established. The water which drained from the capillary barrier had electrical conductivities on the order of one third that of the underlying saline soil, and should be acceptable for stream discharge. The capillary barriers reduced the flux of water and salt to the groundwater to about one third of that of the control. The results of the study show that capillary barriers can be used effectively to contain salt contaminated soils.
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Source :
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Water Air and Soil Pollution, vol.104
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