If the volume of a treatment tank remains constant while its inflow rate doubles, its theoretical detention time will:
Correct answer: C. Become half as large
- A. Double
- B. Become four times greater
- C. Become half as large
- D. Remain unchanged
Explanation
Theoretical detention time equals tank volume divided by flow rate. With constant volume, doubling the flow rate reduces the detention time to one half.
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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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