Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

1. UT Basic/ Advanced > UTB8 Sewage Disposal Field Sanitation and Water Treatment > Flashcards

UTB8 Sewage Disposal Field Sanitation and Water Treatment Flashcards

1
Q

Chlorinators are most often classified as direct feed or what else? (Page 8-1)

A

Solution feed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Direct-feed chlorinators are used chiefly as emergency equipment and on small installations where it is not possible to obtain a water supply suitable for operating a solution-feed machine. They cannot be used where the pressure of the water being treated is more than what psi and are limited in the types of semiautomatic or automatic controls that may be used? (Page 8-1)

A

20

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Chlorination equipment to feed chlorine gas or hypochlorite solution is of how many general types? (Page 8-1)

A

Three

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

A common type of portable Hypochlorinator used is the Proportioneers Chlor-O-Feeder. The Proportioneers Chlor-O-Feeder is a positive displacement diaphragm- type pump with an electric drive or a hydraulic operating head. The maximum capacity of the most popular type, the heavy-duty Midget Chlor-O-Feeder, is how many gallons of solution in 24 hours? (Page 8-2)

A

95

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Chlorinators and all piping should be inspected how often for leaks? (Page 8-4)

A

Daily

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

At what intervals, the level and elevation of troughs should be checked? (Page 8-12)

A

Quarterly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

At how many month intervals, metal troughs should be inspected for corrosion? (Page 8-12)

A

6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What term refers to small, more or less hemispherical lumps on the walls of the pipe, which increase the friction loss and, by reducing the velocity, also reduce the capacity of the pipe? (Page 8- 13)

A

Tubercles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Self-generating what gives respiratory protection in moderately and extremely high concentration of toxic gases or vapors or in an atmosphere deficient in oxygen? (Page 8-20)

A

Oxygen-Breathing Apparatus (OBA)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Which sanitary sewer system is used to connect two or more branches?

A

Main sewer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How many different categories are associated with suspended solids?

A 
4
Settleable 
Non settleable 
floatable
Organic & inorganic
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

At what percentage of salt concentration is salt water used in flushing to arrest sludge digestion in a septic tank?

A

1.2%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which test is used to determine the fall per minute rate of a disposal system?

A

Percolation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which test is used for determining the proper chemical dosages for the coagulation of water to remove turbidity?

A

Jar test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How many feet away from the structure’s foundation should the house sewer extend?

A

3 to 5 feet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which sanitary system sewer connects to a branch and has no common sewer tributary?

A

Lateral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Which sanitary system sewer contains many branches, providing an outlet for a large area?

A

Trunk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Forced main piping carrying sewage under pressure to a pumping station requires a minimum velocity speed of what value, in fps?

A

3 feet per second

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Which sanitary system sewer contains the treatment plant line leading to a final disposal point?

A

Outfall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q 
Which construction material is NOT used in the making of manholes?
A. Brick
B. Shale concrete
C. Precast reinforced concrete
D. Concrete
A

B. Shale concrete

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Which type of manhole construction material has the widest application use?

A

Precast concrete ring

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Which type of construction material is best suited for modifications to existing structures?

A

Brick

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Shaft type manholes can be constructed to a depth of how many feet?

A

130

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

When a 36-inch sewer line is utilized, how many feet apart are manholes placed?

A

500 feet

15-48” sewer lines

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Why are storm drainage systems separated from sanitary systems?

A

Storm and surface drainage do not require treatment.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Within how many feet from sewer lines are tree roots a prevalent problem?

A

100

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What promotes the growth of sludge particles in aeration tanks?

A

Dissolved oxyge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What term is also used to refer to waste breakdown by microorganisms in dissolved oxygen?

A

Aerobic digestion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

The process that kills essentially all pathogenic bacteria in wastewater is known as what?

A

Disinfection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Which waste water treatment is used to convert suspended materials into a form more readily separated from the water being treated?

A

Secondary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What term is used to refer to the settable solids separated from liquids during processing?

A

Sludge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Which material is designated as domestic organic waste?

A

Fecal, soap, food

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

What substance will decrease as a result of an increase of wastewater in a body of water?

A

Oxygen

34
Q

The total residue of solid waste contained in wastewater is known as _______ solids.

A

Total solids

35
Q

(True or False) Organic material which includes vegetable matter is a type of solid material found in wastewater.

A

True

36
Q

Cesspools must be covered with plank of what minimum thickness, in inches, for prevention of breeding flies?

A

2”

37
Q

How many feet apart should cesspools be constructed?

A

20’

38
Q

When cesspools are located in fine sand, what can be done to increase the leaching field?

A

Surround the walls with graded gravel.

39
Q

Soils that require more than 30 minutes for a fall of how many inches are unsatisfactory for leaching?

A

1”

40
Q

The bottom of the inlet sewer should be how many inches above the water level of the tank?

A

3”

41
Q

When a septic tank is to be installed, what is the minimum desirable size, in gallons?

A

1000 gallons

42
Q

Excessive scum in septic tanks results in which condition?

A

high solids

odor increase

43
Q

To ensure food and water will be protected from contamination, latrines should be placed how many yards from mess areas?

A

100

44
Q

Straddle trenches are built how many feet long?

A

4’

45
Q

A unit containing 100 personnel requires how many feet of latrine space?

A

16’

46
Q

What type of latrine is used when you have a high groundwater level?

A

Mound latrine

47
Q

After cleaning the pails used with the pail latrine, what substance is added to the pail prior to placing it back in service?

A

1” of pine oil disinfectant

48
Q

What is the depth, in feet, of an 8-seat box type latrine in use for 2 weeks or less?

A

4 feet

49
Q

Which urine disposal facilities are the best for field use?

A

Urine soakage pit

50
Q

Pipes utilized with the pipe urinal system should extend how many inches above the ground surface?

A

30”

51
Q

Which type of soil does NOT have good leaching abilities?

A

rocky

52
Q

Which condition need NOT be met to have a properly functioning tile field?

A. Subsurface drainage towards the field
B. Groundwater well below the level of the field.
C. Soil of satisfactory leaching characteristics.
D. Adequate area for tile field installation.

A

A. Subsurface drainage towards the field

53
Q

When fiber pipe is used to lay pipe in a trench, what is the distance requirement, in inches, between the joint openings?

A

3/8”

54
Q

The distance between laterals during the layout of leaching fields is how many times wider than the trench?

A

3

55
Q

The water cycle associated with water treatment is also known by what term?

A

Hydrologic

56
Q

The capacity of the material composing any stratum to transmit water under pressure is known as what?

A

Permeability

57
Q

(True or False) Wells ending in the zone of aeration produce no water.

A

True

58
Q

The time between drinking contaminated water and the appearance of a disease is known as what period?

A

Incubation

59
Q

Impurities in water can be broken down into how many different categories of impurities?

A

2
dissolved impurities
suspended impurities

60
Q

How many methods are currently in use by the Seabees in field water treatment and purification?

A

5
coagulation, flocculation, sedimentation, filtration,
disinfection.

61
Q

Which is a common floc-forming chemical used in flocculation?

A

Aluminum sulfate

62
Q

Each pound of liquid chlorine produces how many cubic feet of chlorine gas at atmospheric pressure and at a temperature of 68 degrees?

A

5 cubic feet of gas

63
Q

(True or False) The bactericidal effectiveness of chlorine depends upon the pH chlorine residual, contact period, and pressure.

A

False

depends upon the pH chlorine residual, contact period, and temperature.

64
Q

What type of solution does a low pH value indicate?

A

Very strong acid

65
Q

Which is NOT a consideration in the safe handling of chlorine?
A. Never connect a full cylinder to a manifold with another cylinder unless temperatures are the same.
B. When not withdrawing the chlorine, keep outlet valves shut.
C. Disconnect all hoses once the cylinder is empty.
D. Ensure that the storage area contains high humidity.

A

D. Ensure that the storage area contains high humidity

66
Q

Discharge of cylinders containing chlorine should be conducted in a room with a temperature of _______ degrees Fahrenheit.

A

70

67
Q

Direct feed chlorinators cannot be used where the pressure of the water being treated is more than how many pounds per square inch?

A

20 psi

68
Q

The chlorinator operates under how many inches of vacuum?

A

5

69
Q

The dosage rate of a hypochlorinator is controlled by what piece of equipment?

A

Water flow through the meter

70
Q

When locating chlorination equipment in a room with other pieces of equipment, you should install curbing how many inches high around the chlorination equipment?

A

6”

71
Q

To prevent accidents caused by the corrosive action of hypochlorite solutions, the solution container is lined with which type of material?

A

Chlorine resistant plastic

72
Q

Cylinders containing ammonia gas will liquefy at a temperature of how many degrees Fahrenheit?

A

145

73
Q

Water samples from a lake should be taken how many feet out from the shore?

A

25’

74
Q

In an orthotolidine test, how many minutes should the sample sit after adding the orthotolidine solution?

A

5 minutes

75
Q

In an OTA test, the temperature of the sample should never be above a temperature of how many degrees Fahrenheit?

A

68

76
Q

A pH reading of 7 indicates what condition?

A

Nuetral

77
Q

How many salinity tests can be performed to determine the salt concentration of a sample of water?

A

4
alkalinity test hardness test chloride test
sulfate test.

78
Q

Which method of determining water hardness is vastly superior to other tests?

A

Titration

79
Q

Which type of odor test is most widely used to determining odor levels?

A

Threshold

80
Q

For how many years are water sampling test results kept?

A

2 years

1. UT Basic/ Advanced (25 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions