If you collect a jar of muddy water from a puddle or ditch,and then let the mud settle out over many hours,you have separated much of the mud from the water using a process very much like the
A)grit chamber in a wastewater facility.
B)primary treatment in a wastewater facility.
C)secondary treatment in a wastewater facility.
D)trickling-filter system in a wastewater facility.

Question

Quizplus · Accepted Answer

The process described is similar to the primary treatment in a wastewater facility, where solids settle out in a sedimentation tank. The mud settling out from the jar of muddy water is analogous to solids settling out in the sedimentation tank, leaving behind cleaner water.

If You Collect a Jar of Muddy Water from a Puddle