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Reliability Assessment of Industrial Wastewater Treatment Plant  

Yang, Hyung-Jae (Environmental Cap System Research Dept. National Institute of Environmental Research)
Kim, Jae-Hoon (Environmental Cap System Research Dept. National Institute of Environmental Research)
Lee, Sung-Jong (Environmental Cap System Research Dept. National Institute of Environmental Research)
Publication Information
Journal of environmental and Sanitary engineering / v.22, no.4, 2007 , pp. 1-9 More about this Journal
Abstract
A wastewater treatment plant, operating process is physico-chemical/biological activated sludge attached sand filtration, was selected to evaluate effluent quality and pollutants removal efficiencies consideration for deriving the technology-based effluent limitation for petroleum refining industry discharge. The results of influent and effluent analysis were as follows: Average effluent quality were 0.076mg/l of copper, 0.084mg/l of lead, 0.036mg/l of zinc, 0.005mg/l of nickel and 0.004mg/l of cadmium, and the range of coefficient of reliability from 0.007 of copper to 1.0 of lead. Also, 95% of reliability, 0.112, 0.15, 0.063, 0.015 and 0.009mg/l, respectively, were remarkably lower than their effluent limitations. And to reach 95% reliability of effluent limitation at cleanness area, designed effluent quality of copper, lead, zinc and cadmium should be 0.268, 0.099, 0.526 and 0.008mg/l, respectively.
Keywords
Petroleum refining industry; Coefficient of reliability; 95% reliability;
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