A study on the main sewage channel in Erbil city

Abstract

Studying the water quality of Erbil waste water, and how much it match with the world criteria to irrigation purpose, during Spring 2007 to Winter 2008 , ten stations within and along the city wastewater channel were chosen , the first formation (Qalaa in the city centre) till the last gathering station to form the main channel in the southern west of the city (Areb qand).Important measurements were taking in consideration :T. coliform, TP, TN, BOD5, COD and TSS .The main results were :* The seasonal values followed certain rhythm which was; Summer > Spring > Winter .* Only for the reason of high number of T. cliform in the studies season except the winter season which was in low value, the wastewater in the main channel match to irrigation purpose only in Winter season.