Assessment of water quality for Euphrates river in AL-Nasiriyah city by using organic pollution index

الملخص EN

The present study was conducted to demonstrate the effect of organic matter on characteristics of the Euphrates river at the center of Al-Nasiriyah city and its feasibility for domestic, industrial and agricultural uses.

[This index is an efficient and successful method for descriptive and quantitative assessment of organic pollution in different aquatic systems].

Four stations were selected, the first station near Al-Sharif, the second station near the thermal of electric power, the third station near the Zaytoon Bridge at the city center and the fourth station near the waste water treatment station, the samples were collected from water monthly starting October 2017 Until September 2018.

Some physical and chemical properties were measured: Biological oxygen demand (BOD5), Nitrate (NO3), phosphate (PO4), Ammonium (NH4).

The results of variables of water in the studied stations showed that the values of Biological Oxygen Demand ranged between (1.3-24.6) mg/L, nitrates between (9.24-61.98) mg /L, phosphate recorded values ranged between (0.10 – 1.30) mg /L, and ammonium (0.10 – 1.4) mg /L.