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KMID : 1171820070220040001
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Journal of Environmental and Sanitary Engineering
2007 Volume.22 No. 4 p.1 ~ p.9
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Reliability Assessment of Industrial Wastewater Treatment Plant
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Yang Hyung-jae
Kim Jae-Hoon
Lee Sung-Jong
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Abstract
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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 0.076㎎/ℓ of coper, 0.084㎎/ℓ of lead, 0.036㎎/ℓ of zinc, 0.005㎎/ℓ of nickel and 0.004㎎/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 0.009㎎/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 0.008㎎/ℓ, respectively.
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KEYWORD
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Petroleum refining industry, Coefficient of reliability, 95% reliability
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