The ability of some physical and biological methods to improve the quality of well water

Relatively the specific high salinity ground water in Nineveh province were physically improved with freezing and melting treatment. Also, the algal treatment with Chara vulgaris as a biological treatment were applied, this algae have salt absorbance ability and precipitate it on the external algae surface . The results indicated that the complete freezing and slow melting gave low concentrations of the studied parameters, which depends on the melted water quantity after freezing, the impurity reduction efficiency %E of electrical conductivity, total alkalinity and total hardness with high values at the first treatment were (95 , 96 , 95%) respectively, the previous parameters were decreased to (73 , 74.7 and 77%) after the third treatment, also, the results were reported decreasing in case of partial freezing, so, the releasing percentage of electrical conductivity, total alkalinity, chlorides and sulfates to ( 56 - 55 - 42 and 85%) respectively. After six days of the biological treatment with Chara vulgaris algae indicates that the releasing percentage of total alkalinity and total hardness were decreased by ( 38.7 and 66%) respectively, finely it was found after 13 days of the treatment, the above parameters were raised to ( 55.1 and 92% ) respectively