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Assessment of agricultural drainage water quality for safe reuse in irrigation applications-a case study in Borg El-Arab, Alexandria
Authors: Mahmoud Nasr, Hoda Farouk Zahran
Number of views: 504
Objective: To demonstrate the technical feasibility of the reuse of agricultural drainage water
for irrigation.
Methods: The agricultural drainage water near Banjar El-Sokar, Borg El-Arab City,
Alexandria, Egypt was collected. The measured heavy metals in the drainage water were
compared with the permissible levels stated in environmental regulations, Law No. 48 of 1982
concerning the protection of the Nile River and waterways from pollution.
Results: Heavy metals and trace elements were detected in this agricultural drainage water as
following: Al (1.64 mg/L), Ca (175.00 mg/L), Cd (1.87 mg/L), Co (2.23 mg/L), Cu (1.71 mg/L),
Fe (1.64 mg/L), K (20.50 mg/L), and Pb (2.81 mg/L). According to allowable limits, item such
as Fe is lower than permissible level of 3.00 mg/L, while Pb and Cu are higher than 0.10 mg/L
and 1.00 mg/L, respectively.
Conclusions: Vegetables irrigated with such drainage water are not safe for human and animal
consumption. Accordingly, the study suggests and recommeds remediation of drainage water
using physical, chemical and/or biological methods.