Which method is most appropriate for reducing the moisture content of sewage sludge before final disposal?
Correct answer: B. Sludge dewatering
- A. Coarse screening
- B. Sludge dewatering
- C. Grit removal
- D. Breakpoint chlorination
Explanation
Dewatering removes a substantial portion of water from sludge, reducing its volume and handling cost. Screening and grit removal are preliminary wastewater processes, while chlorination is a disinfection process.
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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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