Document Type : Research Paper
Author
Department of Civil Engineering / College of Engineering / Al-Mustansiriya University
Abstract
Abstract : Through five months in 2003-2004 many samples of water were drawn from Al - Wathba water treatment plant in Baghdad city , certinely from the intake and before and after filtration units . Biological analysis on these samples has been done and the results show the ability of filters in removal total bacteria and coliform bacteria with rate of 53 % and 57 % respectively . Also this research denote the statistical correlation between residual turbidity and microorganisms with coefficient of determination R² equal 0.964 . The reducing in contact time required for removal of coliform bacteria was 64.12 % for filtered water compaired with raw water , so this may gain health and economical benefits .
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