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Water Treatment Plant Operator Test Questions > Taste And Odors > Flashcards

Taste And Odors Flashcards

1
Q

What does TON mean?

A

Threshold odor number

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2
Q

What is the SMCL for odor?

A

3

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3
Q

Name three sources of origination for taste and odor?

A

Raw water source, plant chemicals, distribution system

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4
Q

What is the first step in solving a taste and odor problem?

A

Locate origin and extent

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5
Q

The 2 broad categories of treatment for taste and odor are?

A

Destruction and removal

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6
Q

Taste and odors that have as their source volatile organics can be treated by what two methods?

A

Aeration and air stripping

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7
Q

Which of the following is a process that combines the elements of air blowers and cascades to achieve aeration and volatile organic removal?

A

Air stripping

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8
Q

How are volatile organics removed from water?

A

degasification

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9
Q

Earthly taste and odors are caused by which of the following?

A

Microorganisms

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10
Q

How would you determine the cause of an earthly / musty taste or odor?

A

Microscopic examination

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11
Q

Customers called and complained of a geranium taste and odor? What is the likely cause?

A

Trichloramines

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12
Q

Customers call and complain of a swimming pool taste and odor? What is the likely cause?

A

Low chlorine residual

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13
Q

There is a fruity taste and odor in the water . What is the likely cause?

A

Aldehydes

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14
Q

What is a cause of aldehyes in water?

A

Breakdown of amino acids by ozonation

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15
Q

There is a sweet aromatic taste and odor. What is the likely cause?

A

Phenols/ chlorophenols

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16
Q

What should you use to get rid of a phenolic taste or odor?

A

GAC ( granular activated carbon)

17
Q

The water system used a large amount of chlorine to remove a severe taste and odor problem at the plant. Which of the following would they use to remove the chlorine before the water left the plant?

A

GAC

18
Q

What is the term used for the natural process that brings about an increase in the nutritional level of a lake or reservoir?

A

Eutrophication

19
Q

Which of the following organisms move about in the water by the use of its tail-like appendages?

A

Flagellate

20
Q

What laboratory equipment is used to measure the volume of settable solids in a specific volume?

A

Imhoff cone

21
Q

Volatile solids are measured in a muffled furnace at what temperature and for how long?

A

550° c, 1 hour

22
Q

PAC should always be added at which point in the treatment process?

A

Before chlorine/chlorination

23
Q

Which of the following is the correct way to store KMnO⁴?

A

On Pallets away from heated pipes

24
Q

What color is created when? KMnO⁴ is added to water?

A

Purple/ changes to pink

25
Q

If water has signs of rust or clay, what action is needed?

A

Do not acidify sample and test immediately

Water Treatment Plant Operator Test Questions (16 decks)

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