The objective of this study is to evaluate the degree of pollution of oil extraction olive waste water discharged directly to the receiving environment (Wadi R'dom the Sidi Kacem city). And the problems posed qualifies them as liquid material polluting the environment the case of surface waters and low-flow land application, the results of some physic-chemical parameters in terms of conductivity, salinity, biological demand oxygen (BOD5), chemical oxygen demand (COD), the rate of sediment dissolved (TDS) and suspended solids (SS) are respectively significant mean values of the four study sites 22.61
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