CA Wastewater Grade III Practice Exam Questions with Verified Answers| Latest Update
Graded A+
How long does aerobic sludge digestion take? 30 days
Starting up and shutting down an activated sludge plant: Should follow a written plan
Ammonia-nitrogen in the effluent of treatment plants may cause Potential health hazards to
newborns, ammonia toxicity to fish, increased MPN and increased dissolved oxygen depletion
What is an anaerobic process? Contains no DO
Microorganisms in MLSS include: Free crawling ciliates, stalked ciliates, flagellates and
amoeboid
The easiest digestible waste are: food waste
Worms and rotifers are an example of what in MLSS? animals in the MLSS
What does WAS stand for? Waste Activated Sludge
What can Sodium Nitrate be used for? Provide oxygen for facultative organisms
A major advantage of water hyacinth systems are: It's a natural process requiring little
energy input
Do in a pond will increase: During the day
Careful chlorination of the RAS will inactive filamentous causing bulking
Graded A+
How long does aerobic sludge digestion take? 30 days
Starting up and shutting down an activated sludge plant: Should follow a written plan
Ammonia-nitrogen in the effluent of treatment plants may cause Potential health hazards to
newborns, ammonia toxicity to fish, increased MPN and increased dissolved oxygen depletion
What is an anaerobic process? Contains no DO
Microorganisms in MLSS include: Free crawling ciliates, stalked ciliates, flagellates and
amoeboid
The easiest digestible waste are: food waste
Worms and rotifers are an example of what in MLSS? animals in the MLSS
What does WAS stand for? Waste Activated Sludge
What can Sodium Nitrate be used for? Provide oxygen for facultative organisms
A major advantage of water hyacinth systems are: It's a natural process requiring little
energy input
Do in a pond will increase: During the day
Careful chlorination of the RAS will inactive filamentous causing bulking
