Which sewer arrangement carries domestic sewage and stormwater in the same pipe?
Correct answer: C. Combined sewer system
- A. Separate sewer system
- B. Intercepting sewer system
- C. Combined sewer system
- D. Pressure sewer system
Explanation
A combined sewer system conveys sanitary sewage and stormwater together. A separate system uses different pipes, reducing the hydraulic burden on sewage treatment plants during rainfall.
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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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