The main objective of the present study was to identify the main natural and, locally, anthropic factors that intervene in the sedimentary dynamics of the Kneiss shoreline located at the level of the Gulf of Gabes, Tunisia. The results of mineralogical and granulometric analyses of the surface sediments taken at the level of the upper beach and shallow waters showed that these sediments are essentially constituted by quartz and calcite. The clay phase is quite heterogeneous, with an association in variable proportions of kaolinite, illite and smectite. The sands of the tidal channels show a...

The main objective of this study is the design of an ecological urban wastewater treatment plant in the region of Gabes (southern Tunisia). The treatment process by vertical flow reed filters (VFPR) was chosen. This is an extensive aerobic biological purification technique with fixed cultures on a granular support. This process is perfectly suited to small and medium-sized communities and provides good purification performance. Its principle consists in developing an aerobic biomass, fixed on filter beds, capable of ensuring the oxidation of organic and nitrogenous matter carried by the...

L'infiltration percolation est une technique extensive de traitement des eaux usées urbaines, basée sur le pouvoir épurateur du sol. L'étude expérimentale de cette technique consiste à suivre ses performances épuratoires en utilisant un bassin d'infiltration percolation et une charge hydraulique quotidienne de 0,27 m3/m2 d'un effluent secondaire de la station d'épuration de Gabès (Sud-Est tunisien). Les résultats obtenus ont montré que cette technique d'épuration est très performante vis-à-vis de l'élimination des matières en suspension et des matières dissoutes facilement...

Hauptziel der vorliegenden Studie war es, die wichtigsten natürlichen und lokal auch anthropogenen Faktoren zu ermitteln, die die Sedimentdynamik an der Kneiss-Küste im Golf von Gabes (Tunesien) beeinflussen. Die Ergebnisse der mineralogischen und granulometrischen Analysen der Oberflächensedimente, die auf der Höhe des oberen Strandes und des Flachwassers gesammelt wurden, zeigten, dass diese Sedimente im Wesentlichen aus Quarz und Calcit bestehen. Die Tonphase ist recht heterogen, wobei Kaolinit, Illit und Smektit in unterschiedlichen Anteilen vorhanden sind. Die Sande der...