What device performs the same function as API separators, but with a parallel plate assembly?
A. CFI separator
B. Parallel plate interceptor
C. Corrugated plate interceptors
D. Circular mechanical clarifier
A. Incorrect. A CFI separator is not a device related to environmental control equipment.
B. Correct. Parallel plate interceptors (PPIs) perform the same function as API separators, but with a parallel plate assembly.
C. Incorrect. Corrugated plate interceptors are like API separators and PPIs; however, they use a series of corrugated plate packs at an inclined angle in a vessel to separate oil, water, and solids.
D. Incorrect. Circular mechanical clarifiers feed wastewater up through a pipe in the center of the clarifier and distribute it into the “settling zone,” where the bacteria settles out of the water and falls to the bottom of the clarifier.
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