Sewage Treatment Worker Practice Test 1 Questions with Correct 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