SEWAGE TREATMENT WORKER PRACTICE TEST 1 UPDATED QUESTIONS AND
ANSWERS
Velocity of flow through tank - CORRECT ANSWER✅✅The rate at which solids settle out of sewage in a
sedimentation tank is dependent Mainly on the
Sluice Gate - CORRECT ANSWER✅✅Flow of sewage to the treatment plant from the intercepting sewer
is controlled by a
Flocculation - CORRECT ANSWER✅✅The process of adding chemicals to the sewage to increase the rate
of settlement of suspended solids is known as
Bar Rack - CORRECT ANSWER✅✅Large objects such as sticks are removed from raw sewage by a
Compressed Air - CORRECT ANSWER✅✅Grit is Most frequently moved from the grit chamber to the grit
storage tank by
Diffusers - CORRECT ANSWER✅✅The porous plates through which air enters the aeration chamber in
the activates sludge process are known as
B.O.D - CORRECT ANSWER✅✅The strength of sewage is measured by determining its
Continuously removed - CORRECT ANSWER✅✅In order to prevent digestion of sludge in sedimentation
tanks, the sludge is
Copper - CORRECT ANSWER✅✅One of the chemicals used to increase the rate of settling of suspended
solids in sewage is
Kill Bacteria - CORRECT ANSWER✅✅Chlorine is added to sewage to
Combined - CORRECT ANSWER✅✅A sewer which receives BOTH rain water and sewage from
residences is known as a ________ sewer
ANSWERS
Velocity of flow through tank - CORRECT ANSWER✅✅The rate at which solids settle out of sewage in a
sedimentation tank is dependent Mainly on the
Sluice Gate - CORRECT ANSWER✅✅Flow of sewage to the treatment plant from the intercepting sewer
is controlled by a
Flocculation - CORRECT ANSWER✅✅The process of adding chemicals to the sewage to increase the rate
of settlement of suspended solids is known as
Bar Rack - CORRECT ANSWER✅✅Large objects such as sticks are removed from raw sewage by a
Compressed Air - CORRECT ANSWER✅✅Grit is Most frequently moved from the grit chamber to the grit
storage tank by
Diffusers - CORRECT ANSWER✅✅The porous plates through which air enters the aeration chamber in
the activates sludge process are known as
B.O.D - CORRECT ANSWER✅✅The strength of sewage is measured by determining its
Continuously removed - CORRECT ANSWER✅✅In order to prevent digestion of sludge in sedimentation
tanks, the sludge is
Copper - CORRECT ANSWER✅✅One of the chemicals used to increase the rate of settling of suspended
solids in sewage is
Kill Bacteria - CORRECT ANSWER✅✅Chlorine is added to sewage to
Combined - CORRECT ANSWER✅✅A sewer which receives BOTH rain water and sewage from
residences is known as a ________ sewer
