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Waste > waste chp 2 > Flashcards

waste chp 2 Flashcards

1
Q

Aerobic Bacteria

A

Bacteria which live and reproduce only in an environment containing free oxygen

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2
Q

Anaerobic Bacteria

A

Bacteria which live and reproduce only in an environment containing no free or dissolved oxygen

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3
Q

Pathogenic Organism

A

Bacteria, viruses, cysts, or protozoa which can cause disease

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4
Q

Milligrams per Liter

A

A measure of the concentration by weight of a substance by unit volume.

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5
Q

pH

A

An expression of the intensity of the acidic or basic (alkaline) condition of a liquid.

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6
Q

Describe the chemical structure of pure water

A

Combination of two parts hydrogen and one part oxygen, H2O

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7
Q

Substances naturally dissolved in water include:

A

A.Gases
B.Inorganic Minerals
C.Organics from plant and animal matter

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8
Q

How are impurities dissolved into water

A

A. Gases as precipitation falls through the atmosphere
B. Inorganic minerals as is flows over and erodes the earth’s surface C. Organic matter as it picks up plant and animal waste

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9
Q

Sources of organic wastes in wastewater include:

A

Domestic sewage, Dairy Proccessing, and meat packing

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10
Q

When biodegradable organic wastes are discharged into a river

A

Bacteria consume the dissolved oxygen while breaking down waste

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11
Q

(T or F)Hydrogen Sulfide gas is produced by anaerobic bacteria which thrive when little or no dissolved oxygen is present.

A

TRUE

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12
Q

Hydrogen Sulfide gas is undesirable in a treatment plant because:

A

A. It has a “rotten egg” odor
B. It may form explosive mixtures with air
C. It is capable of paralyzing the respiratory system

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13
Q

(T or F)Diseases caused by pathogenic bacteria known to be transmitted in wastewater include: typhoid, cholera, dysentery, polio, and hepatitis..

A

TRUE

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14
Q
  1. The purpose for chlorinating wastewater treatment effluents is:
A

C. Only to provide a complete kill of pathogenic organisms

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15
Q
  1. Wastewater discharges may cause fish to have an unpleasant taste or odor
A

TRUE

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16
Q
  1. Two primary nutrients of concern to wastewater discharges are:
A

Nitrogen and Phosphorus

17
Q

Total Solids is comprised of:

A

A. Dissolved Solids
B. Suspended Solids (settleable and non-settleable)
C. Floatable Solids

18
Q

NPDES, as in NPDES Permit, stands for:

A 
National\_\_\_\_\_\_
	Pollutant\_\_\_\_\_\_
	Discharge\_\_\_\_\_\_
Elimination\_\_\_\_
System\_\_\_\_\_\_\_\_\_

Waste (1 decks)

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