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water treatment 4 - ut > C1 Ops & Maint - A. Sources, Pre-Treatment/Acronyms > Flashcards

C1 Ops & Maint - A. Sources, Pre-Treatment/Acronyms Flashcards

A. Sources and Pre-Treatment/Acronyms

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1
Q

A. Sources & Pre-Treatment

The continuous exchange of water between the earth and atmosphere is called?

A: Reverse Osmosis

B: Evapotranspiration

C: Hydrologic Cycle

D: Cycle of Filtration

A

C: Hydrologic Cycle

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2
Q

A. Sources & Pre-Treatment

Of the following terms, which one is NOT considered to be part of the Hydrologic Cycle:

A: Condensation

B: Evaporation

C: Percolation

D: Adsorption

E: Precipitation

A

D: Adsorption

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3
Q

A. Sources & Pre-Treatment

The movement of water through the interstices or pores of soil within the earth is called:

A: Condensation

B: Runoff

C: Transpiration

D: Percolation

A

D: Percolation

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4
Q

A. Sources & Pre-Treatment

A water-bearing geological formation is commonly called:

A: An aqueduct

B: The Zone of “Saturation”

C: Water Table

D: Aquifer

A

D: Aquifer

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5
Q

A. Sources & Pre-Treatment

The top of the aquifer is called:

A: Water Table

B: Impervious Stratum

C: Line of Declination

D: Watershed

A

A: Water Table

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6
Q

A. Sources & Pre-Treatment

The process by which water changes from a vapor state to a liquid is called:

A. Condensation

B. Evaporation

C. Precipitation

D. Vaporization

A

A. Condensation

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7
Q

A. Sources & Pre-Treatment

Erosion on the raw water source watershed should be prevented or limited to reduce:

A. Trihalomethanes

B. Sludge Accumulation

C. Hardness

D. Turbidity

A

D. Turbidity

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8
Q

A. Sources & Pre-Treatment

What is the formula for water?

A

H2O

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9
Q

A. Sources & Pre-Treatment

TRUE or FALSE

mg/L = Milligrams per Liter and PPM = Parts per Million are the same.

A

TRUE

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10
Q

A. Sources & Pre-Treatment

Whats does TON Stand for?

A

Threshold Odor Number (for odor in the water)

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11
Q

A. Sources & Pre-Treatment

What does MGD stand for?

A

Million Gallons per Day

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12
Q

A. Sources & Pre-Treatment

What does NTU stand for?

A

Nephelometric Turbidity Unit

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13
Q

A. Sources & Pre-Treatment

TON (Threshold Odor Number) should be conducted at what degree Celcius?

A

60 C

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14
Q

A. Sources & Pre-Treatment

Surface water may best be described as:

A. Water taken from a spring that flows from openings in a rock formation.

B.Water that percolates through the surface if the earth and is found just below the surface.

C. Water that partially occupies the interstices in the zone of saturation.

D. Water taken from lakes, rivers & streams.

A

D. Water taken from lakes, rivers & streams.

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15
Q

A. Sources & Pre-Treatment

What does PSI stand for?

A

Pounds per Square Inch

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16
Q

A. Sources & Pre-Treatment

During the Hydrologic Cycle, water will pick up forms of organic matter.

Which of the following is NOT Organic matter?

A: Minerals

B: Bacteria

C: Protozoa

D: Fungi

A

A: Minerals

17
Q

A. Sources & Pre-Treatment

What does TTHM stand for?

A

Total Trihalomethane

18
Q

A. Sources & Pre-Treatment

The process by which water becomes a vapor at a temperature below boiling it is commonly known as:

A: Condensation

B: Evaporation

C: Precipitation

D: Saturation

E: Transpiration

F. A & C

G. B & E

A

B: Evaporation

OR

G. B) Evaporation & E) Transpiration

19
Q

A. Sources & Pre-Treatment

What does GPM Stand for?

A

Gallons Per Minute

20
Q

A. Sources & Pre-Treatment

Are suspended solids the same as turbidity?

A. Yes, all particles refractor light the same.

B. No, particles in water refract light differently.

C. Only under a microscope.

D. During sedimentation.

A

B. No, particles in water refract light differently.

21
Q

A. Sources & Pre-Treatment

Non-setteable solids are classified as _________, _________ and _________ solids.

A. suspended, colloidal and dissolved

B. colloidal, dissolved and total dissolved

C. colloidal, bacterial and suspended

D. coarse, fine and very fine

A

A. suspended, colloidal and dissolved

22
Q

A. Sources & Pre-Treatment

Algae can cause problems of:

A. Filter clogging

B. Taste and odors

C. Slime growth

D. All of the above

A

D. All of the above

23
Q

A. Sources & Pre-Treatment

What is the most likely season of algal blooms?

A. After Fall or Spring Turnover

B. After the decay of calcium carbonate compounds

C. During Winter Turnover

D. During the Summer Equinox

A

A. After Fall or Spring Turnover

24
Q

A. Sources & Pre-Treatment

What is the common and nickname for CuSO4?

A. Copper Sulfate, Blue Stone

B. Calcium Hypochlorite, Quick Lime

C. Aluminum Sulfate, Alum

D. Polymer, Fish Eyes

A

A. Copper Sulfate, Blue Stone

25
Q

A. Sources & Pre-Treatment

Which chemical is used to treat reservoirs and lakes with algal blooms?

A. Alum

B. Copper Sulfate

C. Ferric Chloride

D. Polymer

A

B. Copper Sulfate

26
Q

A. Sources & Pre-Treatment

A heavy growth of algae in a surface water reservoir will have which one of the following effects on the water?

A. Lower the pH

B. Raise the pH

C. Will have no effect on the pH

D. Increase pH acid and lower pH basic

A

B. Raise the pH

27
Q

A. Sources & Pre-Treatment

What is the purpose of intake facilities?

A. To filter microorganisms.

B. To inactivate viruses.

C. To protect stream bottoms from deteriorating.

D. To remove fish and debris.

A

D. To remove fish and debris.

28
Q

A. Sources & Pre-Treatment

Why is it necessary to have flow into and out of plant as well as backwash water metered?

A. To calculate the amaount of plant use

B. To know how to bill customers

C. To account for all water and provide adequate treatment

D. To determine the amount of solids that are removed from the water

A

C. To account for all water and provide adequate treatment

29
Q

A. Sources & Pre-Treatment

Given the following data, what is the most likely cause of the mechanically cleaned bar screen problem?

DATA: Normal water flow; Motor running but unit not operating; Drive chain tight; Water differential across screen above 16 inches; Controls on “auto”; Pin sheared or auto clutch tripped

A. Shear pin is wrong size

B. Broken coupling

C. Rocks lodged in screen

D,Motor running at too high rpm’s

A

C. Rocks lodged in screen

30
Q

A. Sources & Pre-Treatment

Which of the following is a type of pre-sedimentation system:

A. Impoundments

B. Weed Harvesting

C. Dewatering

D. Copper Sulfate

A

A. Impoundments

31
Q

A. Sources & Pre-Treatment

Water that is high in sulfate can cause:

A. Diarrhea

B. Hardening of the arteries

C. Motteling of tooth enamel

D. Staining of plumbing fixtures

E. All of the above

A

A. Diarrhea

32
Q

A. Sources & Pre-Treatment

Travelers from one community to another can become ill, EVEN IF drinking water meets health standards.

The digestive tract may be disturbed by changes in the __ _____ & _______ _______.

A. coliform bacteria count

B. filtration rate

C. pH value and mineral count

D. amount of chlorine

A

C. pH value and mineral count

33
Q

A. Sources & Pre-Treatment

Which word best describes the chemical combination of substances in a solutions so as to cause seperation in the insoluble form?

A. Stabiilization

B. Saturation

C. Precipitation

D. Coagulation

A

C. Precipitation

34
Q

A. Sources & Pre-Treatment

Iron and manganese react with _________ ______.

A. Hydrogen sulfide gases

B. Calcium Carbonate compounds

C. Alkalinity

D. Dissolved oxygen

A

D. Dissolved oxygen

35
Q

A. Sources & Pre-Treatment

Iron and manganese problems generally occur in systems that draw water from either deep wells or from the lower levels of large reservations because:

A. Soluble forms of these minerals reach much higher concentrations under anaerobic conditions.

B. Iron and manganese can combine with trihalomethanes.

C. Hydrogen sulfide is mixed with these minerals and causes taste and odor problems.

D. Decomposition of organic matter with iron and manganese for troublesome consituents.

A

A. Soluble forms of these minerals reach much higher concentrations under anaerobic conditions.

36
Q

A. Sources & Pre-Treatment

Primary water quality variables that an operator should be concerned about include:

A. Hardness and corrosion

B. Turbidity and chlorine residual

C. Tastes and odor

D. All of the above

A

B. Turbidity and chlorine residual

37
Q

A. Sources & Pre-Treatment

Fertilization of crops and lawns near surface waters can cause what kinds of problems?

A. High levels of nutrients causing algal growth.

B. Very low levels of ammonia, thus reducing the formation of chloramines.

C. It causes the water to taste and smell like manganese compounds.

D. It causes high levels of methyl-blue.

A

A. High levels of nutrients causing algal growth.

water treatment 4 - ut (6 decks)

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