What is the principal function of a grit chamber in a wastewater-treatment plant?
Correct answer: A. To remove sand and other heavy inorganic particles
- A. To remove sand and other heavy inorganic particles
- B. To oxidize dissolved organic matter biologically
- C. To disinfect sewage before discharge
- D. To concentrate dissolved salts by evaporation
Explanation
Grit chambers remove dense inorganic materials such as sand, gravel and eggshells that could damage pumps or accumulate in later units. Organic matter is mainly treated in subsequent biological processes.
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About Environmental Engineering
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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