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Caleb C Lab Test > Definitions > Flashcards

Definitions Flashcards

1
Q

Aliquot

A

Portion of sample

Often an equally divided portion of a sample

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2
Q

Ambient temperature

A

Temperature of surrounding air

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3
Q

Amperometric

A

Method of measurement that records electronic current flowing or generated, rather than recording voltage.

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4
Q

Amperometric titration

A

Means of measuring concentrations of certain substances in water

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5
Q

Aerobic

A

condition in which free or dissolved oxygen is present in water

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6
Q

Anaerobic (Septic)

A

condition in which free or dissolved oxygen is not present in water

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7
Q

Digester

A

tank in which sludge is placed to allow decomposition by microorganisms.
Anaerobic or aerobic condition

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8
Q

Community Wastewater System

A

A public system with at least 15 service connections or 5000 gallons of wastewater per day
Must be operated by certified operators

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9
Q

Carcinogen

A

Any substance which tends to produce cancer in an organism

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10
Q

Facultative Bacteria

A

Can use either DO or O2 or oxygen obtained from compounds such as sulfate and nitrate ions
They can live under aerobic or anaerobic conditions

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11
Q

Indicator (chemical)

A

A substance that gives a visible change, usually of color, at a desired point in a chemical reaction, at a specific endpoint.

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12
Q

Lagoon

A

the most common type of treatment pond used to treat domestic wastewater (facultative pond).
The upper portion is aerobic, bottom layer is anaerobic.
Algae supply most of the oxygen in aerobic layer

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13
Q

Percent saturation

A

The amour of substance that is dissolved in solution compared with amount that could be dissolved in the solution

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14
Q

Percent Saturation

A

(amount of substance that is dissolved)(100%)/(amount that could be dissolved in solution)

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15
Q

Corrosivity

A

indication of corrosiveness of water (pH, Alkalinity, Hardness

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16
Q

Disinfection

A

the process designed to kill or inactivate most microorganisms in water

17
Q

influent

A

wastewater or other liquid, raw or partially treated, flowing INTO a reservoir, basin, treatment process or treatment

18
Q

Effluent

A

Wastewater, raw or partially treated, flowing OUT of reservoir, basin treatment process or treatment plant

19
Q

Organic compound

A

Substances that come from animal or plant sources. Organic substances always contain carbon (C)

20
Q

Inorganic compounds

A

Material such as sand, salt, iron, calcium salts and other minerals

21
Q

Hydrologic Cycle

A

the process of evaporation of water into the air and the return to earth by precipitation (rain, snow)

22
Q

Representative sample

A

a sample portion of material or water that is as nearly identical in content and consistency as possible to that in the large body of material or water being sampled

23
Q

Supernatant

A

Liquid removed from settled sludge

24
Q

Surfactant

A

Abbreviation for Surface-active agent.

the active agent in detergents that possesses a high cleaning ability

25
Q

water-borne disease

A

diseases that are caused by biological life forms (baster, viruses) carried by water
Ex: Typhoid Fever, Dyssentery, Polio, Hepatitis

26
Q

NPDES

A

National Pollutant Discharge Elimination System

27
Q

OPDES

A

Oklahoma Pollutant Discharge Elimination System

28
Q

Preliminary Treatment

A

The removal of rocks, rags, sand, eggshells, and other heavy materials by screen/grit removal systems

29
Q

Primary Treatment

A

A wastewater treatment process in which those substances in wastewater that readily settle of float are separated from water being treated

30
Q

Secondary Treatment

A

A wastewater treatment process used to convert dissolved and suspended materials into a form more readily separated from the water being treated. This process is commonly a type of biological treatment process.

31
Q

Sludge (Biosolids)

A

The settleable solid separated from liquid during the processing of wastewater

32
Q

Stabilize

A

To convert to a form that can resist changes. Organic material is stabilized by microorganisms which covert the material to gasses and other substances

33
Q

Stabilized material

A

no odor

34
Q

Tertiary Treatment

A

Third treatment process following the secondary process.

Processes that remove waste which are not removed by conventional treatment (secondary)

35
Q

Wastewater Collection System (sanitary sewer system)

A

a network of pipes and equipment intended to carry wastewater from homes, business, and industries to treatment facilities

36
Q

Water Pollution

A

any change in the natural state of water which interferes with its beneficial reuse or causes failure to meet water quality requirements

37
Q

Average wastewater production per person per day

A

70-100 gpd

38
Q

Average water usage per person per day

A

100-130 gpd/person

Caleb C Lab Test (1 decks)

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