The main purpose of a sanitary landfill gas-collection system is to:
Correct answer: C. Capture methane and control gas migration
- A. Increase rainwater infiltration into waste
- B. Convert plastics directly into compost
- C. Capture methane and control gas migration
- D. Remove all dissolved salts from leachate
Explanation
Decomposing organic waste produces methane and carbon dioxide. Gas collection reduces fire and explosion risks, limits migration to nearby buildings, and may allow useful energy recovery.
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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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