Discussion
Statement I: A wet scrubber solves the particulate problem outright.
Statement II: Collected dust leaves a scrubber as a slurry requiring thickening, dewatering and disposal.
In the light of the above statements, choose the correct answer.
Answer: A
Correct answer: Statement I is incorrect but Statement II is correct
Statement II is correct and it is precisely why statement I is wrong. A scrubber transfers the dust from the gas to the water; it does not destroy it. The resulting slurry must be thickened, dewatered and the solids disposed of, and the water treated or recirculated. The air problem has become a water and solid waste problem, which is the standing objection to wet collection.
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