Settling velocity increases with_______________? Read More »
Environmental Engineering A. 1/3
B. 2/3
C. 3/4
D. 1.0
The ratio of 5 day BOD to ultimate BOD is about_______________? Read More »
Environmental Engineering A. 1 ppm
B. 4 ppm
C. 10 ppm
D. 40 ppm
A. maximum at noon
B. minimum at noon
C. maximum at midnight
D. same throughout the day
Dissolved oxygen in streams is______________? Read More »
Environmental Engineering A. inlet
B. manhole
C. drop manhole
D. catch basin
A. maximum flow only
B. minimum flow only
C. average flow only
D. maximum and minimum flow
Sewage treatment units are designed for_______________? Read More »
Environmental Engineering A. septic conditions
B. dissolved oxygen
C. chlorine
D. nitrogen
Corrosion in concrete sewers is caused by______________? Read More »
Environmental EngineeringA. only (1)
B. (1) and (2)(Correct)
C. (1) and (3)
D. only (3)
Septic tank is a______________? Read More »
Environmental Engineering A. 1 minute
B. 5 minutes
C. 2-4 hours
D. 12 hours
Generally the detention period for grit chambers is kept as_______________? Read More »
Environmental Engineering