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analysis of oxygen transfer performance on sub-surface aeration systems次表面曝气系统氧传输性能分析
Int. J. Environ. Res. Public Health 2006, 3(3), 301-308
International Journal of
Environmental Research and Public Health
ISSN 1661-7827
© 2006 by MDPI
Analysis of Oxygen Transfer Performance on Sub-surface Aeration
Systems
Kossay K. Al-Ahmady*
Civil Engineering Department, College of Engineering, University of Mosul, Iraq
* Correspondence to Dr. Kossay K. Al-Ahmady, Email: k.alahmady@
Received: 10 October 2005 / Accepted: 10 June 2006 / Published: 30 September 2006
Abstract: The efficiency of oxygen transfer depends on many factors including the type, size and shape of diffusers
and the tank geometry. In this paper, the effect of the depth of water in the tank and, the extension of coverage area of
diffusers on each of oxygen transfer capacity (OC), efficiency (E) and, on a percentage of oxygen absorption (δ) is
tested. Experimental procedure is adopted to evaluate the effect of these parameters. The results of the study showed
that, both the depth of water and the extent of coverage area of diffuser had a significant effect on the tested
3
parameters. The values of oxygen transfer capacity (OC) and efficiency (E) ranged from 18 to 170 grO2/m . hr and
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