Evaluation of quality of some water sources and their suitability for irrigation

Abstract EN

The investigation aims at evaluating the quality of some waste water and their suitability for irrigation.

Samples of agricultural drainage water, domestic waste-water and mixed water were taken from Moshtohor agricultural drain, Moshtohor station of sewage water treatment Qalyobiya drain.

Tap water of EC 0.65 dSm-1 considered suitable for irrigation.

Waste-waters and the agricultural drainage waters of EC 0.98 to 1.42 dS m-1 were unsuitable for irrigation.

The SAR ranged from 0.36 to 0.96 and the RSC ranged from -1.0 to -3.4, and the waters can be classified as of low soluble.

According to the classification of Ayers and Westcot (1987), water having EC of < o.75 dS m-1hasnosalinity problems.

Agricultural drainage water was of no problems regarding Cl content.

Increasing problems would be expected due to the use of the wastewaters for irrigation if the overhead sprinkler irrigation system is used since their contents of HCO3 - ions exceed 1.5 mmolcL-1 .Both of domestic and the mixed waste-waters contained Fe, Zn, Mn, Co, Ni and Pb in a concentration exceeding the permissible limits except for Coin the mixed waste-water.