MONITOJUNG CHANGES IN WATER QUALITY OF SOME DRAINS AT THE NORTHERN PART OF DELTA TO ASSESS THEIR SUITABILITY FOR IRRIGATION

Abstract

The current investigation aims to:

(i) study water quality of some drains that conjugated with Edko drain, and monitor the changes in some heavy metals, i.e., Cd, Co, pb and Ni, (ii) Assess the changes of water quality for some selected drains over a prolonged period (more than 20 years) to evaluate the salinity and sodictiy status of water to draw the policy of the possible best utilization of these types of water. And (iii), evaluate the status of some pathogenic components, total coliform, faecal colifrom and salmonella and Shigella as bacterial bioindictors used to measure the contamination, and to evaluate the suitability of drainage water for irrigation.

To achieve these objectives, water samples were monthly collected through the period from April 2002 to March 2003 and analyzed to assess their suitability for irrigation according to the standard guidelines obtained by Ayers and westcot (FAO, 1985). Previous study by EL-Wakeel (1983) was considered to evaluate the changes occurred in water quality in a prolonged period. The obtained results could be summarized as follows:

5.1. Study the monitoring status of water quality in the studied drains: This study involved the drains of Edko drain system, these drains were Shubrakhit, El-Lowia, El-Khariy, El-Alf, EL­ Kosore, Shamasma, and Toson before and after dump in Edko drain.