Which process is most suitable for stabilizing biodegradable municipal solid waste under controlled aerobic conditions?
Correct answer: D. Composting
- A. Mechanical screening alone
- B. Open burning
- C. Pyrolysis without oxygen
- D. Composting
Explanation
Composting uses controlled aerobic microbial activity to stabilize biodegradable waste and produce a humus-like material. Pyrolysis is a thermal process, while screening only separates materials and does not biologically stabilize them.
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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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