TEXAS WASTEWATER CLASS C EXAM TEST BANK | ALL QUESTIONS AND
CORRECT ANSWERS | ALREADY GRADED A+ | VERIFIED ANSWERS | LATE
VERSION
Study online at https://quizlet.com/_gimqto
1. The Activated Sludge Process: C. Is an Aerobic biological
process
A. requires preaeration
B. requires Activated Carbon
C. is an aerobic biological process.
D. Usually precedes primary sedimentation.
E. Requires 50% by volume old sludge to work effec-
tively.
2. A complete mix activated sludge plant has a fast set- D. Increase the F/M Ratio
tling sludge and high amounts of pin floc leaving the by Wasting More
clarifier. One way to correct this problem is to :
A. Increase the RAS Flow
B. Reduce Wasting Rates
C. Increase dissolved oxygen levels.
D. Increase the F/M ratio by wasting more
E. Increase the sludge age by wasting less.
3. Which of the following flow rates should be measured E. all the above
if the operator is to control plant properly?
A. Aeration rate or resulting dissolved oxygen level.
B. Influent or effluent.
C. return sludge
D. waste sludge
E. all the above
4. During start up your aeration tank produces excessive C. Seeding the process
amounts of billowing white foam. This can be correct- with sufficient good quality
ed by: sludge
, TEXAS WASTEWATER CLASS C EXAM TEST BANK | ALL QUESTIONS AND
CORRECT ANSWERS | ALREADY GRADED A+ | VERIFIED ANSWERS | LATE
VERSION
Study online at https://quizlet.com/_gimqto
A. Doing nothing, it will go away in a few hours
B. Increasing the sludge wasting rate
C. Seeding the process with sufficient good quality
sludge
D. Spraying water on the foam until it is gone
E. Taking a weeks vacation
5. In solving an operational problem at a treatment A. there is almost always
plant: a good technical solution.
It may require consider-
A. there is almost always a good technical solution. It able experience and time
may require considerable experience and time to learn to learn whaat it is.
whaat it is.
B. Human errors have to be corrected since the oper-
ator is at fault.
C. don't let the laboratory personnel influence you're
judgement as to what the best solution is.
D. standard textbooks in sanitary engineering are the
best source of information.
E. It is best to do nothing until the TNRCCC sends a
violation notice.
6. When the return sludge rate is too low, what happens? E. B and D
A. the aeration tank will not fill
B. There will be insufficient organisms to treat the wast
load entering the aeration basin
C. the activated sludge in the aerator will starve.
D. the sludge blanket in the secondary clarifier could
CORRECT ANSWERS | ALREADY GRADED A+ | VERIFIED ANSWERS | LATE
VERSION
Study online at https://quizlet.com/_gimqto
1. The Activated Sludge Process: C. Is an Aerobic biological
process
A. requires preaeration
B. requires Activated Carbon
C. is an aerobic biological process.
D. Usually precedes primary sedimentation.
E. Requires 50% by volume old sludge to work effec-
tively.
2. A complete mix activated sludge plant has a fast set- D. Increase the F/M Ratio
tling sludge and high amounts of pin floc leaving the by Wasting More
clarifier. One way to correct this problem is to :
A. Increase the RAS Flow
B. Reduce Wasting Rates
C. Increase dissolved oxygen levels.
D. Increase the F/M ratio by wasting more
E. Increase the sludge age by wasting less.
3. Which of the following flow rates should be measured E. all the above
if the operator is to control plant properly?
A. Aeration rate or resulting dissolved oxygen level.
B. Influent or effluent.
C. return sludge
D. waste sludge
E. all the above
4. During start up your aeration tank produces excessive C. Seeding the process
amounts of billowing white foam. This can be correct- with sufficient good quality
ed by: sludge
, TEXAS WASTEWATER CLASS C EXAM TEST BANK | ALL QUESTIONS AND
CORRECT ANSWERS | ALREADY GRADED A+ | VERIFIED ANSWERS | LATE
VERSION
Study online at https://quizlet.com/_gimqto
A. Doing nothing, it will go away in a few hours
B. Increasing the sludge wasting rate
C. Seeding the process with sufficient good quality
sludge
D. Spraying water on the foam until it is gone
E. Taking a weeks vacation
5. In solving an operational problem at a treatment A. there is almost always
plant: a good technical solution.
It may require consider-
A. there is almost always a good technical solution. It able experience and time
may require considerable experience and time to learn to learn whaat it is.
whaat it is.
B. Human errors have to be corrected since the oper-
ator is at fault.
C. don't let the laboratory personnel influence you're
judgement as to what the best solution is.
D. standard textbooks in sanitary engineering are the
best source of information.
E. It is best to do nothing until the TNRCCC sends a
violation notice.
6. When the return sludge rate is too low, what happens? E. B and D
A. the aeration tank will not fill
B. There will be insufficient organisms to treat the wast
load entering the aeration basin
C. the activated sludge in the aerator will starve.
D. the sludge blanket in the secondary clarifier could
