Wastewater Exam Class C Questions and Answers Already Passed
0 view 0 purchase
Course
Wastewater
Institution
Wastewater
The Activated Sludge 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 effectively. C. Is an Aerobic biological
process
A complete mix activated sludge pla...
wastewater exam class c questions and answers alre
Written for
Wastewater
All documents for this subject (418)
Seller
Follow
Jessypeace
Content preview
Wastewater Exam Class C Questions
and Answers Already Passed
The Activated Sludge 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 effectively. ✔✔C. Is an Aerobic biological
process
A complete mix activated sludge plant has a fast settling sludge and high amounts of pin floc
leaving the 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. ✔✔D. Increase the F/M Ratio by Wasting More
Which of the following flow rates should be measured 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 ✔✔E. all the above
During start up your aeration tank produces excessive amounts of billowing white foam. This
can be corrected by:
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 ✔✔C. Seeding the process with sufficient good quality sludge
In solving an operational problem at a treatment plant:
A. there is almost always a good technical solution. It may require considerable experience and
time to learn whaat it is.
B. Human errors have to be corrected since the operator 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. ✔✔A. there is almost
always a good technical solution. It may require considerable experience and time to learn whaat
it is.
When the return sludge rate is too low, what happens?
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 become too high.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Jessypeace. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.99. You're not tied to anything after your purchase.
