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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Academy of PakistanTest & Learning

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6Chemical EngineeringMedium

ABiological oxygen pond

BGravity separator having oil skimming devices

CAerated lagoons

DTrickling filters

Correct answer

B. Gravity separator having oil skimming devices

Explanation

The correct answer is Gravity separator having oil skimming devices.

The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by________? - Answer and Explanation | Academy of Pakistan