Which solid-waste treatment method uses microorganisms to convert biodegradable waste into a soil-like product?
Correct answer: B. Composting
- A. Open dumping
- B. Composting
- C. Magnetic separation
- D. Pyrolysis of metals
Explanation
Composting is an aerobic biological process that converts biodegradable organic waste into a relatively stable soil-like material. Open dumping provides little process control and does not reliably stabilize the waste.
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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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