Discussion :: Environmental Engineering
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The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by
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A.
biological oxygen pond.
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B.
aerated lagoons.
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C.
trickling filters.
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D.
gravity separator having oil skimming devices.
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Answer : Option D
Explanation :
No answer description available for this question.
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