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Abdalla, K. Z., and G. Hammam, "Correlation between Biochemical Oxygen Demand and Chemical Oxygen Demand for Various Wastewater Treatment Plants in Egypt to Obtain the Biodegradability Indices", International Journal of Sciences: Basic and Applied Research, vol. 13, issue 1, pp. 42-48, 2014. Abstract

Biochemical Oxygen Demand (BOD5) and Chemical Oxygen Demand (COD) are the most commonly used parameters for the characterization of wastewaters. Both of these parameters have advantages and disadvantages, and the choice usually depends on many factors such as the time period required to determine each one of them. It is essential to obtain a correlation between BOD5 and COD for various wastewater treatment plants, to help in the design and operation of these plants. In this paper, the biodegradability indices (B.I) for several wastewater treatment plants were obtained. The chosen WWTPs covered different regions in Egypt. The obtained correlation between BOD5 and COD will help in evaluating the treatment processes, which in turn leading to improve the performance of these plants. The average B.I. of all investigated wastewater plants was found to be 0.67. This indicates that generally Egyptian wastewater is fairly biodegradable. El Beheira governorate was found to have the highest mean B.I. of 0.88, while the lowest mean B.I. was found to be 0.49 in Alexandria.

Abdalla, K. Z., and S. M. Sharaf, "Cost Optimization of Sewerage Systems in Rural Areas in Egypt", International Journal of Engineering and Advanced Technology, vol. 3, issue 3, 2014.
D
Abdelhalim, H., K. Z. Abdalla, U. Zaher, and P. Vanrolleghem, "DYNAMIC MODELING OF THE ACTIVATED SLUDGE PROCESS FOR REAL TIME MONITORING AND CONTROL", Water Intelligence Online , 2004.
U
Abdalla, K. Z., and A. Fayez, "Upgrading of the Existing Wastewater Treatment Plan ts in Egypt Using Discfilter", Journal of Civil and Environmental Research , vol. 3, issue 13, pp. 131-136, 2013.
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