100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
2024 WASTE WATER OPERATOR LV 1 EXAM PREP WITH CORRECT ANSWERS  $13.99   Add to cart

Exam (elaborations)

2024 WASTE WATER OPERATOR LV 1 EXAM PREP WITH CORRECT ANSWERS 

 8 views  0 purchase
  • Course
  • WASTE WATER OPERATOR LV 1
  • Institution
  • WASTE WATER OPERATOR LV 1

2024 WASTE WATER OPERATOR LV 1 EXAM PREP WITH CORRECT ANSWERS 

Preview 2 out of 9  pages

  • September 9, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • WASTE WATER OPERATOR LV 1
  • WASTE WATER OPERATOR LV 1
avatar-seller
Elitaa
2024 WASTE WATER OPERATOR LV
1 EXAM PREP WITH CORRECT
ANSWERS



What is the purpose of a rectangular sedimentation basin scum trough?

A. Collects the settled wastewater flowing over the weirs
B. Drags sludge to the deep end of the sump for removal by pumping
C. Ensures equal flow over all weirs
D. Receives the floating material from the scum skimmer for removal -
CORRECT-ANSWERSD. Receives the floating material from the scum skimmer
for removal

Why must fats, oils, hair, and other light material be removed by flotation?

A. To allow for the recover and recycling of this valuable resource
B. To prevent the material from settling to the bottom of the tank
C. To protect the aesthetics of receiving wasters
D. To remove the material as quick as possible to avoid odor complaints -
CORRECT-ANSWERSC. To protect the aesthetics of receiving wasters

For a combined sedimentation-digestion unit what is the purpose of inflow
measurement?

A. To determine if effective digestion is taking place
B. To determine if sufficient chlorine is being applied to the effluent
C. To determine the efficiency of clarifier removal
D. To determine the hydraulic loading on the facility - CORRECT-ANSWERSD.
To determine the hydraulic loading on the facility

What is the name for the biological slime growth that develops on the
trickling filter media?

A. Biosolids
B. Schmutzdecke
C. Volatile acid film
D. Zoogleal film - CORRECT-ANSWERSD. Zoogleal film

When evaluating trickling filter operating records operators should adjust the
process according to which main principle?

, A. To minimize all operational costs
B. To obtain the best possible results for the least cost
C. To use the least amount of chlorine
D. To use the lowest recitculation rates - CORRECT-ANSWERSB. To obtain the
best possible results for the least cost



In the activated sludge process, some of the activated sludge must be
wasted to...

A. Prevent excessive solid buildup
B. Prevent clogging of the sludge return line
C. Prevent overloading of sludge return pumps
D. Increase digester gas production - CORRECT-ANSWERSA. Prevent
excessive solid buildup

The best operating strategy for feeding primary sludge to an anaerobic
digester is to feed...

A. Several time a day
B. Large quantities once or twice a day
C. Once a day
D. When the volatile solids drop below 60% - CORRECT-ANSWERSA. Several
time a day

Why is scum skimmed from the liquid surface of a primary settling tank?

A. To reduce load on the digester
B. To eliminate interference with sludge removal
C. To allow aeration of the tank contents
D. To reduce odor and insect nuisance - CORRECT-ANSWERSB. To eliminate
interference with sludge removal

Which of the following test would give the fastest indication of toxicity in an
activated sludge process?

A. Oxygen Uptake Rate (OUR)
B. Settleometer
C. MLSS
D. Microscopic Observation - CORRECT-ANSWERSA. Oxygen Uptake Rate
(OUR)

Filamentous bulking of activated sludge may be controlled temporarily by...

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 Elitaa. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $13.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

79271 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$13.99
  • (0)
  Add to cart