Primary sewage treatment involves
A)aeration.
B)settling.
C)chemical treatment.
D)Primary sewage treatment involves all of the above.

Question

Quizplus · Accepted Answer

Primary sewage treatment involves settling, which allows solid particles to settle to the bottom of a tank while oil and grease float to the top and are removed. Aeration and chemical treatment are processes involved in secondary and/or tertiary treatment.

Primary Sewage Treatment Involves