EVALUATION DE LA QUALITE DES EAUX DE SURFACE DES OUEDS FES ET SEBOU UTILISEES EN AGRICULTURE MARAICHERE AU MAROC
Journal Title: Larhyss Journal - Year 2008, Vol 7, Issue 7
Abstract
Currently, Sebou watershed is threatened by an intensive pollution, considering the enormous volume of dismissals issued from the city of Fez. The total pollution rejected by this city rises up to 100.000 m3/day; it will reach 120.000 m3/day by 2015 (RADEEF, 2007). The agricultural use of Fez stream and Sebou river wastewaters in the area of Fez is more intense and aims primarily the market gardenings. This use may be accompanied with health hazards for which evaluation requires the well knowledge of physicochemical and microbiological characteristics of this water. Obtained results during this study, indicate that physicochemical and microbiological quality the water used in irrigation, does not fit always with the criteria on conditions of the use of wastewater in agriculture. However, stations located respectively upstream of Fez city and the confluence zone between Fez stream and Sebou river are, slightly susceptible to satisfy the fixed criteria by WHO. Furthermore, irrigation waters of stations located downstream from dismissals of Fez city and downstream from the zone of confluence are highly chemically and bacteriologically polluted, they are characterized by low content in oxygen, large contents in suspended matter, DBO5, nitrate, K+, phosphates, and high concentrations in heavy metals such as Cr, Cu and Ni as well as an important presence of fecal coliformes and Streptocoques which exceed the limits fixed by WHO. The protection of this water against various contaminations is necessary and imperative in order that this water continues to be used in agriculture.
Authors and Affiliations
DERWICH E. | Centre Universitaire Régional d’Interface, Fès, Maroc, BEZIANE Z. | Faculté des Sciences, Département de Biologie, Fès, Maroc, BENAABIDATE L. | Faculté des Sciences et Techniques, Département de Géologie, Fès, Maroc, BELGHYTI D. | Faculté des Sciences, Département de Biologie, Kénitra, Maroc
Keywords
Related Articles
- EP ID EP14909
- DOI -
- Views 394
- Downloads 17
THE FOGGARA OF KENADSA (ALGERIA)
For more than seven centuries, the farmers of oasis of Kendsa, exploit the groundwater of Barga El Jebel by the using of subterranean drains. On the basis of missions in 2013 in the oasis of Kenadsa, forty Foggaras wer...
PROBLEMATIQUE D’AMENAGEMENT ET CONFLIT D’USAGE DE L’EAU EN ZONE DE MONTAGNE, CAS DES MONTS DE BENI CHOUGRANE (NORD-OUEST ALGERIEN)
The water management in mountain areas is a major concern in Algeria; due to the twin problems it poses, namely, siltation of dams and the degradation of soil fertility. To this end, a new form of organization of water...
EFFET DES PARAMETRES REACTIONNELS SUR L’ELIMINATION DE LA TYROSINE ET DE L’HISTIDINE EN PRESENCE DES SUBSTANCES HUMIQUES PAR LE CHARBON ACTIF
The main objective of our study is to test the performance of activated carbon powder and grains in the elimination of tyrosine and histidine in the presence of humic substances separately. The tests made in synthetic...
BRINGING STATISTICAL TECHNICS TO THE STUDY OF THE CLIMATE VARIABILITY : CASEOF TADLA-AZILAL BASIN
Rainfall has varied considerably over the last few decades resulting in droughts and floods. The occurrence of these extreme events implies a potential change in the stationarity of climate regime. The aim of this stud...
APPROCHE REGIONALE POUR L’ESTIMATION DES PLUIES MAXIMALES JOURNALIERES DU NORD DE L’ALGERIE
Maximum rain quantiles estimate has always been of great importance to hydrologists and water resource managers. This information is essential for planning emergency situations related to hazardous weather conditions a...