Some environmental problems associated with the use of treated wastewater for irrigation in Jordan.
Copyright (c) 1997 Elsevier Science B.V. All rights reserved.
Treated effluent was used for eggplant (aubergine) irrigation through a trickle system at As-Samra experimental site.
The soil characteristics were determined prior to irrigation.
Physical, chemical and biological characteristics of the effluent were determined during the growing season.
Suitability of the effluent for irrigation was studied.
The crop and soil were tested for pathogenic pollution.
The accumulation of salts and heavy metals in the soil as well as concentration of the nutrients and heavy metal accumulation in the plant tissues were determined.
Clogging of the irrigation system was evaluated and treated.
Yield was determined.
Results of the study showed that the effluent has a low heavy metal content.
It showed moderate restriction for surface trickle irrigation.
Regarding the microbiological quality of the treated wastewater, it was found that the faecal coliform ranged from 2.1x103 to 1.8x10 Most Probable Number (MPN) per 100 ml at the irrigated site, while it is free from nematode eggs.
The soil surface under the effluent irrigation water was found to contain faecal coliform, but the count drastically decreased with depth.
Except for a very low coliform count on fruit skins, no coliform count was found on the crop leaves, whether they were free or in contact with the soil.
The effluent showed a rather high concentration of chlorophyll a due to the presence of algae. (...)
Mots-clés Pascal : Colmatage, Contamination biologique, Impact environnement, Irrigation goutte à goutte, Pollution chimique, Pollution eau, Pollution sol, Rendement, Réutilisation, Surveillance sanitaire, Tissu végétal, Coliforme, Solanum melongena, Solanaceae, Dicotyledones, Angiospermae, Spermatophyta, Azote, Eau usée, Fèces, Métal lourd, Phosphore, Jordanie, Asie, Sol cultivé, Essai en champ, Etude régionale, Aménagement hydraulique, Plante légumière, Elément minéral, Polluant, Bassin méditerranéen, Moyen Orient, EAU D'IRRIGATION
Mots-clés Pascal anglais : Plugging, Biological contamination, Environment impact, Trickle irrigation, Chemical pollution, Water pollution, Soil pollution, Yield, Reuse, Sanitary surveillance, Plant tissue, Coliforms, Solanum melongena, Solanaceae, Dicotyledones, Angiospermae, Spermatophyta, Nitrogen, Waste water, Feces, Heavy metal, Phosphorus, Jordan, Asia, Cultivated soil, Field experiment, Regional study, Water management, Vegetable crop, Inorganic element, Pollutant, Mediterranean Basin, Middle east, IRRIGATION WATER
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Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0004187
Code Inist : 001D16A07. Création : 17/04/1998.