Water pollution of oued mina under catchments, in Algerian Tiaret region

الملخص EN

This work concerns with the evaluation of the hydrous pollution evaluation of industrial effluents, in the principal manufacturing units of Tiaret industrial park, as well as in the receiving dam of worn water of this city.

Collected data were treated by correspondent factorial analysis between sites and sampling periods, in summer and winter.

This analysis made us possible to focus obvious signs of pollution with the following evolutionary tendencies: On the level of Giplait : we have recorded an increase in the COD and the BOD5 during the two periods of sampling, as well as increasing rate of suspended solids.

On the level of Sotrefit : we have recorded a strong phosphates concentration during the summer and winter periods, as well as a raised rate of Chromium (in winter) and Copper (in summer).

On the level of the ENF: We have noted that heavy metals prevail in these site effluents.

On the level of the Barrage: We have noted a high concentration of nitrates, organic matter and suspended matter, as a source of pollution of the dam, which is currently used for the supply drinking water in Tiaret region.

This work proved that Tiaret region become polluted.