WASTEWATER OPERATOR EXAM TN

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WASTEWATER OPERATOR EXAM TN

Actual Qs and Ans - Expert-Verified Explanation -Guaranteed passing score -100 Questions and Answers

-Format: Multiple-choice / Flashcard

Question 1: According to TN regulations when renewing an NPDES permit how long before the permit expiration date must the owner submit their application?

Answer:

No later than 180 days Question 2: The amount of iron salts fed to the collection system should be increased whenever

the:

Answer:

Hydrogen sulfide level increases Question 3: What safety equipment should an operator use in areas containing gaseous and particulate contaminants?

Answer:

Supplied air respirator Question 4: Activated sludge describes a process by which waterborne wastes are converted

into:

Answer:

Biomass

Question 5: What should an operator do if the communicator is not operating properly?

Answer:

Check the motor and look for blockage Cut off the electricity Lock out and tag the breaker Place the bar screen into service Question 6: What is a mechanical problem caused from excessive speeds of the distributor of a trickling filter?

Answer:

Damage to the bearing races of the turntable Question 7: According to TDEC rule regarding NPDES permits, a loss of MLSS suspended solids of 30% or more from the aeration basin to the receiving stream due to improper operation of from peak flows causes by I/I

Answer:

Washout Question 8: Where should the flow meter sensor be located at the parshall flume?

Answer:

At a specified location in the convergence of the flume

Question 9: How do you control the flies around a trickling filter?

Answer:

Carefully applying insecticides Cleaning around the filter, including pruning grass and shrubbery Flooding the filter weekly Question 10: How does an increase of the flow rate to primary clarifiers affect the detention time and surface loading rate?

Answer:

Detention time decreases, and loading rate increases Question 11: Which of the following can poison the atmosphere in a room and should always be handled with special care?

Answer:

Mercury

Question 12: Which of the following is NOT a type of nitrogen removal system?

Answer:

Sand filtration Question 13: Alum is added to the secondary clarifiers of an activated sludge plant to remove?

Answer:

Phosphates Question 14: An accident prevention program in generate involves which of the following sets of steps?

Answer:

Recognition of hazards, evaluation of hazards, and control of hazards Question 15: Which of the following is NOT a water quality characteristic that should be measured in the receiving waters and in the plant effluent?

Answer:

Chloride Question 16: Unless there is equal flow distribution between two clarifiers, increasing the RAS will

Answer:

Cause an uneven surface loading rate between two clarifiers Question 17: Which of the following statements is not true concerning the operation of a magnetic flow meter?

Answer:

It operates partially full Question 18: When must all monthly discharge monitoring reports be submitted to the state?

Answer:

Postmarked no later than the 15th of each month Question 19: One advantage of rotating screens over stationary screens is that rotating screens generally

Answer:

Do not dam the flow

Question 20: What is the danger level as defined by federal refs, to individuals whose normal noise exposure might equal or exceed this dangerous level

Answer:

• hour (TWA) of 85 decibels

Question 21: When the F/M ratio is increased, what happens to the sludge age?

Answer:

Decreases

Question 22: What are four true statements concerning washouts?

Answer:

A written report must be submitted to the state within 5 days It is the loss of MLSS of 30% or more It must be reported to the state within 24 hours by telephone It refers ONLY to the MLSS in the aeration tank Question 23: What is the filtrate called that passing through a membrane filter?

Answer:

Permeate Question 24: What could be a cause of "washing out" of the belt on a belt filter press?

Answer:

Belt binding Belt speed too low Hydraulic load too high Polymer dosage insufficient Question 25: According to TN regulations regarding NPDES permits the intentional diversion of

waste water away from any portion of a treatment facility is called a:

Answer:

Bypass

Question 26: How often should communicators be operated?

Answer:

Continuously