WASTEWATER GRADE 1 COURSEWORK
SCRIPT ASSESSMENT FINAL PAPER 2026
GRADED A+.
◍ Racks, screens, comminutors and Grit removal:
The bar rack is used. Answer: when the bar screen is out of service
◍ Primary Sedimentation:
Typically, what is the average detention time for wastewater in a
primary clarifier?. Answer: 2 hr
◍ Sedimentation and Flotation:
Name one gas this irritates the "eyes". Answer: chlorine
◍ Primary Sedimentation:
Activated sludge clarifiers accept material to be settled from. Answer:
an aeration tank
◍ Primary Sedimentation:
,According to CWA, secondary treatment is defines as a wastewater
plant producing an effluent that has no more than____total suspended
solids and no more than_____BOD5. Answer: 30 mg/L, 30 mg/L
◍ Primary Sedimentation:
The color of bio film on a rotating Biological Contactor would
appear____under normal operating conditions. Answer: gray
◍ Activated Sludge:
A primary effluent and returned activated sludge mixture is called.
Answer: waste activated sludge
◍ Activated Sludge:
The mixture of organisms and solids in water that is removed from the
settling tank is called. Answer: mixed liquor
◍ Activated Sludge:
Under normal operating conditions, what color is activated sludge.
Answer: dark chocolate brown
, ◍ Activated Sludge:
What test(s) could an operator use to make process changes
immediately if a problem develops. Answer: COD test
◍ Activated Sludge:
The main "workers" in the activated sludge process are. Answer:
bacteria
◍ Activated Sludge:
A yellow gas flame from a digester's waste gas burner may indicate a
poor quality gas with a. Answer: high CO2 content
◍ Waste Treatment Ponds:
Ponds used in series after primary wastewater treatment are
sometimes called. Answer: oxidation ponds
◍ Waste Treatment Ponds:
The most common type of pond is. Answer: facultative pond
◍ Waste Treatment Ponds:
SCRIPT ASSESSMENT FINAL PAPER 2026
GRADED A+.
◍ Racks, screens, comminutors and Grit removal:
The bar rack is used. Answer: when the bar screen is out of service
◍ Primary Sedimentation:
Typically, what is the average detention time for wastewater in a
primary clarifier?. Answer: 2 hr
◍ Sedimentation and Flotation:
Name one gas this irritates the "eyes". Answer: chlorine
◍ Primary Sedimentation:
Activated sludge clarifiers accept material to be settled from. Answer:
an aeration tank
◍ Primary Sedimentation:
,According to CWA, secondary treatment is defines as a wastewater
plant producing an effluent that has no more than____total suspended
solids and no more than_____BOD5. Answer: 30 mg/L, 30 mg/L
◍ Primary Sedimentation:
The color of bio film on a rotating Biological Contactor would
appear____under normal operating conditions. Answer: gray
◍ Activated Sludge:
A primary effluent and returned activated sludge mixture is called.
Answer: waste activated sludge
◍ Activated Sludge:
The mixture of organisms and solids in water that is removed from the
settling tank is called. Answer: mixed liquor
◍ Activated Sludge:
Under normal operating conditions, what color is activated sludge.
Answer: dark chocolate brown
, ◍ Activated Sludge:
What test(s) could an operator use to make process changes
immediately if a problem develops. Answer: COD test
◍ Activated Sludge:
The main "workers" in the activated sludge process are. Answer:
bacteria
◍ Activated Sludge:
A yellow gas flame from a digester's waste gas burner may indicate a
poor quality gas with a. Answer: high CO2 content
◍ Waste Treatment Ponds:
Ponds used in series after primary wastewater treatment are
sometimes called. Answer: oxidation ponds
◍ Waste Treatment Ponds:
The most common type of pond is. Answer: facultative pond
◍ Waste Treatment Ponds:
