Engineering Board Exam Reviewer · Environmental Engineering · medium

The primary purpose of a stack (chimney) in air pollution control is to:

1. Remove all pollutants from the gas
2. Disperse pollutants high enough to reduce ground-level concentrations
3. Convert pollutants into harmless gases
4. Cool the gas to ambient temperature

Answer

B. Disperse pollutants high enough to reduce ground-level concentrations

Solution

Dispersion does not reduce total emissions.

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