How is most of the energy required for secondary wastewater treatment consumed?
A) as electricity to power air pumps for aeration
B) as electricity to illuminate UV lamps
C) as heat to run distillation equipment
D) as electricity to power hydraulic pumps for reverse osmosis
E) none of the above
Answer: A
You might also like to view...
For the lead-tin phase diagram in Figure 5.11a,
Intensity: A light source radiates 60.0 W of single-wavelength sinusoidal light uniformly in all directions. What is the amplitude of the magnetic field of this light at a distance of 0.700 m from the bulb?(?0 = 8.85 × 10-12 C2/N ? m2, ?0 = 4? × 10-7 T ? m/A, c = 3.0 × 108 m/s)
A. 1.76 × 10-7 T B. 2.02 × 10-7 T C. 2.22 × 10-7 T D. 2.86 × 10-7 T
There are a total of 88 constellations. Roughly how many of these can be seen at any given time from a single location on a clear night?
A) 66 B) 22 C) 11 D) 44 E) 80-85
Steep-sided stratovolcanoes are made from lava that
A) is as runny as liquid water.
B) has a medium viscosity.
C) has a high viscosity.
D) can have any viscosity.