A wet scrubber is primarily designed to control air pollution by:
Correct answer: D. Using liquid contact to remove particles or gases
- A. Using a dry filter to remove dissolved salts
- B. Using gravity alone to settle all fine particles
- C. Using ultraviolet light to remove carbon monoxide
- D. Using liquid contact to remove particles or gases
Explanation
Wet scrubbers bring polluted gas into contact with a liquid that captures particles or absorbs soluble gaseous pollutants. Their effectiveness depends on the pollutant, liquid chemistry, and gas-liquid contact conditions.
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Environmental engineering examines water supply, water quality, treatment processes, wastewater collection and treatment, solid waste management, air pollution and public health protection. It covers sedimentation, coagulation, filtration, disinfection, biological treatment and disposal methods, while distinguishing drinking-water treatment from sewage treatment and BOD from COD.
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