EXERCISES, LESSON 2
INSTRUCTIONS: Answer the following exercises by marking the lettered response that
best answers the exercise, by completing the incomplete statement, by providing more
than 1 response (where applicable), or by writing the answer in the space provided at
the end of he exercise.
After you have completed all these exercises, turn to "Solutions to Exercises" at
the end of the lesson and check your answers. For each exercise answered incorrectly,
reread the material referenced with the solution.
Primary wastewater treatment processes include which of the following?
c. Removal of sand and grit.
d. Removal of nonfiltrable residue by sedimentation.
e. Reduction of putrescible solids to more stable substances.
Screenings containing putrescible material may be disposed of in which of the
a. By burial.
b. As hog feed.
c. By incineration.
d. As fertilizer for crops.
e. By grinding and digesting with sludge.
Grit accumulations from grit chambers may be used for landfill if they do not
contain ______________ material.