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Quiz Chapter 6 > page 80-97 > Flashcards

page 80-97 Flashcards

1
Q

When liquid wastes contain excessive amounts of grease, garbage, flammable wastes, sand, or other ingredients that may affect the operation of a private sewage disposal system, an ___ for such waste shall be installed.

A

interceptor

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2
Q

Waste from interceptors may be discharged to a ______ or other primary system or into a separate disposal system.

A

septic tank

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3
Q

Features of Sewage Treatment Plan (STP)

A
  1. aeration system within the tank
  2. submersible mixer to mix the waste
  3. sludge waste pump that aids in clarifying
  4. decanter
  5. blowers
  6. fully electronic control system
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4
Q

2 Most Common Types of Municipal Sewage Treatment

A
  1. The Activated Sludge Process
  2. The Trickling Filter Process
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5
Q

Involves a series of stations where the raw sewage must pass through

A

The Activated Sludge Process

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6
Q

gets rid of heavy materials with the use of three different filter houses (The Activated Sludge Process)

A

First Phase

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7
Q

clarifies the effluent (The Activated Sludge Process)

A

Second Phase

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8
Q

hardens the sludge and converts it to fertilizers (The Activated Sludge Process)

A

Third Phase

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9
Q

The Activated Sludge Process produces water with ______ purity

A

99-99.5%

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10
Q

a.k.a ‘Percolating or Sprinkling Filter System’

A

The Trickling Filter Process

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11
Q

Requires less mechanical elements and less stages

A

The Trickling Filter Process

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12
Q

The Trickling Filter Process produces water with___ purity

A

95%

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13
Q

Requires a large ground area for its building

A

The Trickling Filter Process

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14
Q

______ shall not be used as soil, waste and vent pipes.

A

Rainwater piping

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15
Q

Downspout and gutter sizes are based upon the ______ of rainfall per hour falling upon a given roof area in square meters.

A

maximum depth

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16
Q

An ave. ______ rainfall intensity is used around Metro Manila.

A

102 mm/hr

17
Q

Round, square rainwater pipes may be used for ___.

A

downspouts

18
Q

Downspouts for high-rise buildings shall be of stronger pipe materials to resist the high ______, they shall be installed within a ______, and have no ______ from the roof to the ground level.

A

hydrostatic pressure
pipe chase
intermediate branch

19
Q

Roof drains shall be equipped with ______ extending 102 mm above the surface of the roof surface.

A

dome-type strainers

20
Q

Roof deck strainers shall be approved ___ type, with a total net inlet area not less than 2 times the area of the outlet pipe to which the drain is connected.

A

flat-surface

21
Q

Roof drains passing through building interiors shall be made ___ by the use of C.I. drain with integrally-cast waterstop ring around the outside of the body and placed at mid-depth of the concrete roof slab and the installation of a clamped suitable flashing material around the drain.

A

watertight

22
Q

3 Major Systems of Collecting Storm Water

A
  1. The Independent System
  2. The Combined System
  3. The Natural System
23
Q

a.k.a. ‘the Separate System’

A

The Independent System

24
Q

Brings collected water directly to the water reservoirs

A

The Independent System

25
Q

Combines storm water with sanitary wastes

A

The Combined System

26
Q

Without using any roof gutters or downspouts

A

The Natural System

27
Q

Also when rainwater is collected in cisterns

A

The Natural System

28
Q

Storm Drain Locations

A

Inside
Outside
Overhead

29
Q

Usually located along the entire perimeter of the roof

A

The Gutter

30
Q

Located every 8 to 10 meters & at every corner of the roof (but, to avoid clogging of pipes, it is best to locate them every 4 to 6 m)

A

The Downspout

31
Q

Drain designed to receive water collecting on the surface of a roof and to discharge it into a downspout. Designed to prevent clogging.

A

The Strainer or Roof Drain

32
Q

At the bottom of the roof leader to direct rainwater towards the nearest catch basin

A

The Shoe

33
Q

Downspouts should terminate in a ______ (can serve more than one downspout)

A

catch basin

34
Q

Delivers water to the sewers in the street via gravity

A

The Catch Basin

35
Q

also collects surface water

A

Area-Drain-Catch-Basin

36
Q

Connects to each catch basin

A

The Storm Line

37
Q

Carries only rainwater collected from the storm drain or from the streets

A

Storm Sewers

38
Q

Terminates at natural drainage areas (i.e. lakes, rivers, and water reservoirs)

A

Storm Sewers

39
Q

Storm Sewers require ___ to serve as clean-outs and to make sewers accessible for inspection and repair built at depths of about 2 to 3 meters; diameter ranging from 0.6 to 1.2 meters

A

manholes

Quiz Chapter 6 (5 decks)

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