دراسة بعض الملوثات البكتيرية في مياه نهر الفرات وبحيرتي الحبانية والثرثار

Abstract

This research included a study about the pollution of environment that out came from public efficiencies and humanity activities on the quality and context of Euphrates river from the Ramadi entrance city to its end in Falluja city involving Habbanyah and Therthar lakes. This study included some bacterial pollution involving the Total Plate Count of the aerobic microbes in addition to isolation and identification of some bacteria that present in the Euphrates river and Habbanyah and Therthar lakes and Dissolved Oxygen and the rate of Biological Oxygen Demand. The results have shown an average allowable values of dissolved oxygen were (7.7) mg/L and (4.67) mg/L the biological oxygen demand which was exceeded the allowable values average. Microbial study showed that the total aerobic bacteria which have recorded different results as it reached aminimum levels in some sites (F1 station (70 C\Cm3 ) and maximum levels in others (F2 station) (314×104 C\Cm3 ). The results of isolation and identification of bacteria have shown the presence of the follwing genera :Enterobacter (24%) ،Klebsiella Pneumoniae (17.6 % ) ،Pseudomonas spp (16.2%) ، Citrobacter (12.5%) ، Escherichia coli (12.1%) ،Proteus mirabilis (5.5)، Salmonella spp (5%) Shigella spp (3.7%)، Flavimonas Oryzihabitas (2.8%) . Enterobacter spp was the dominant genus compared with others bacteria have indicated surely the organic and microbial pollutions of the Euphrates water at the studied sites.