Which water-treatment process is specifically used to remove many taste and odour causing organic compounds?
Correct answer: D. Granular activated carbon adsorption
- A. Plain sedimentation
- B. Coarse screening
- C. Grit removal
- D. Granular activated carbon adsorption
Explanation
Granular activated carbon removes many organic compounds by adsorption onto its highly porous surface, improving taste and odour. Screening, grit removal and sedimentation mainly target physical particles rather than dissolved odour compounds.
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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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