Etude de la qualité des eaux des oueds dans la région de Mila.

Abstract

Water is a natural element essential to the life of all living organisms, it is a wealth necessary for all human activity because of its role in the environment and development. The purpose of this work is to study the water quality of the oued, which is considered as surface water in the Mila region. Twelve samples were taken in two different oued during three months (February, March and April) four samples were taken per month, two amples from the oued El kotone and two samples from the oued El Kebir. This study showed that the physical rameters are affected by temperature (27.5°C), ph (8.62), salinity (1.1mg/l), dissolved oxygen (76.9 mg/l), turbidity (558, 33 NTU), suspended solids (416.66mg/l), TDS (1093.33), electrical conductivity reflects fairly strong (3200 μs/cm), for nutrients: NO3 (3.44mg/l), NO2 (1.17mg/l), PO4(1.41mg/l), NH(0.16mg/l), SIO4(14.45mg/l) and the chemical parameters TA(2.93mg/l), TAC(21 .53mg/l), sulphate (30.13mg/l). the results obtained showed that most of the mean values of the parameters are high. By referring to WHO standards and Algerian standards for surface water and irrigation were analyzed for the majority of the parameters are not in accordance with these standards, therefore the waters of oued El Kotone and oued El Kebir are poor quality and cannot be used for irrigation.