Definitions

Question 1

Aliquot

Answer 1

Portion of sample

Often an equally divided portion of a sample

Question 2

Ambient temperature

Answer 2

Temperature of surrounding air

Question 3

Amperometric

Answer 3

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

Question 4

Amperometric titration

Answer 4

Means of measuring concentrations of certain substances in water

Question 5

Aerobic

Answer 5

condition in which free or dissolved oxygen is present in water

Question 6

Anaerobic (Septic)

Answer 6

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

Question 7

Digester

Answer 7

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

Question 8

Community Wastewater System

Answer 8

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

Question 9

Carcinogen

Answer 9

Any substance which tends to produce cancer in an organism

Question 10

Facultative Bacteria

Answer 10

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

Question 11

Indicator (chemical)

Answer 11

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

Question 12

Lagoon

Answer 12

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

Question 13

Percent saturation

Answer 13

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

Question 14

Percent Saturation

Answer 14

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

Question 15

Corrosivity

Answer 15

indication of corrosiveness of water (pH, Alkalinity, Hardness

Question 16

Disinfection

Answer 16

the process designed to kill or inactivate most microorganisms in water

Question 17

influent

Answer 17

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

Question 18

Effluent

Answer 18

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

Question 19

Organic compound

Answer 19

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

Question 20

Inorganic compounds

Answer 20

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

Question 21

Hydrologic Cycle

Answer 21

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

Question 22

Representative sample

Answer 22

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

Question 23

Supernatant

Answer 23

Liquid removed from settled sludge

Question 24

Surfactant

Answer 24

Abbreviation for Surface-active agent.

the active agent in detergents that possesses a high cleaning ability

Question 25

water-borne disease

Answer 25

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

Question 26

NPDES

Answer 26

National Pollutant Discharge Elimination System

Question 27

OPDES

Answer 27

Oklahoma Pollutant Discharge Elimination System

Question 28

Preliminary Treatment

Answer 28

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

Question 29

Primary Treatment

Answer 29

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

Question 30

Secondary Treatment

Answer 30

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.

Question 31

Sludge (Biosolids)

Answer 31

The settleable solid separated from liquid during the processing of wastewater

Question 32

Stabilize

Answer 32

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

Question 33

Stabilized material

Answer 33

no odor

Question 34

Tertiary Treatment

Answer 34

Third treatment process following the secondary process. | Processes that remove waste which are not removed by conventional treatment (secondary)

Question 35

Wastewater Collection System (sanitary sewer system)

Answer 35

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

Question 36

Water Pollution

Answer 36

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

Question 37

Average wastewater production per person per day

Answer 37

70-100 gpd

Question 38

Average water usage per person per day

Answer 38

100-130 gpd/person