BACTERIAL LOAD EVALUATION OF WASTEWATER TREATED BY NATURAL LAGOON: CASE OF THE BENI-MESSOUS LAGOON

摘要: The wastewater reuse is becoming increasingly important worldwide, especially in irrigation, it depends on the elimination of pathogens. For this, we choose process natural lagoon which consists purifying waste water by simple flow effluent not very deep ponds where proliferate bacteria, algae and other living organisms, under a surrounding air presence solar radiation. This study based estimated removal efficiency bacterial load Beni Messous. According to results obtained, average number germs per 100 ml after treatment stabilization pond was 6, 48.10 5 for Faecal coli forms (FC) 3, 5.10 6 Total coliforms (TC), 4.10 Escherichia 7.10 streptococci (FS), 10 3 Salmonellas 33 Sulfitereducing bacteria. Decontamination considered completed when concentration below recommended limit, comparing, purified has satisfactory bacteriological characteristics irrigation.