11787095
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Quiz von Dean Lampman, aktualisiert more than 1 year ago
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Erstellt von Dean Lampman
vor etwa 7 Jahre
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Frage 1
Frage
What is the volume of 1 ft3 of water?
Antworten
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8.34 gal
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62.4 gal
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92.84 gal
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7.48 gal
Frage 2
Frage
What is considered to be a neutral pH?
Antworten
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6.5
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14.0
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10.0
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7.0
Frage 3
Frage
What does the units parts per million (ppm) mean ?
Antworten
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1 pound per million gallons
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1 gallon per million pounds
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8.34 pounds per million gallons
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10 milligrams per liter
Frage 4
Frage
Which is the biological process that follows primary treatment?
Antworten
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Preliminary treatement
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Tertiary treatement
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Activated sludge process
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Secondary clarification
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Chlorination
Frage 5
Frage
Which of the following is considered to be the least harmful bacteria?
Antworten
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Typhoid
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Fecal coliform
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Cholera
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Streptococcus
Frage 6
Frage
Which is the physical process that follows an aeration tank?
Antworten
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Preliminary treatement
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Tertiary treatment
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Activated sludge process
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Secondary clarification
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Chlorination
Frage 7
Frage
What does the unit parts per million (ppm) mean?
Antworten
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1 pound per million pounds
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1 gallon per million gallons
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8.34 pounds per million gallons
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1 milligram per liter
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All of the available answers
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None of the available answers
Frage 8
Frage
What is another term for inorganic solids?
Antworten
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Volatile
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Non-volatile
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Dissolved
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Soluble
Frage 9
Frage
What does the term aliquot mean?
Antworten
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Composite sample
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Grab sample
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The total volume of sample
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A portion of a sample
Frage 10
Frage
What is the BOD test a measure of ?
Antworten
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Suspended solids
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Organic content
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Dissolved solids
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Alkalinity
Frage 11
Frage
Which type of wastewater typically has the highest demand for oxygen?
Antworten
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Domestic
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Storm water
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Sanitary
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Industrial
Frage 12
Frage
What is the correct incubation time and temperature for the BOD test?
Antworten
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5 days at 20°F
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5 days at 20°C
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20 days at 5°C
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5 days at 68°C
Frage 13
Frage
What is the term for a liquid or sludge with a pH of 6.0?
Antworten
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Alkaline
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Neutral
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Basic
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Acidic
Frage 14
Frage
What are very small, finely-divided solids known as:
Antworten
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Settleable
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Total
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Colloidal
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Inert
Frage 15
Frage
Which of the following best describes the term anoxic?
Antworten
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High dissolved oxygen is present
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Nearly anaerobic; very low dissolved oxygen but nitrates and/or nitrites are present
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Completely anaerobic; no dissolved oxygen, nitrates, or nitrites
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Nitrates are very low
Frage 16
Frage
Which is a higher life form in the activated sludge process.... a free swimming ciliate, a stalked ciliate, or a rotifer?
Antworten
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Free swimming ciliate
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Stalked ciliate
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Rotifer
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They are all the same
Frage 17
Frage
Which term describes the conversion of ammonia nitrogen to oxidized (usually nitrate)?
Antworten
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Fermentation
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Log Growth
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Nitrification
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Denitrification
Frage 18
Frage
What will organic material do in a muffle furnace?
Antworten
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it will burn
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it will not burn
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it will change to inorganic material
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It will convert to dissolved solids
Frage 19
Frage
What is the best definition of a shock load?
Antworten
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An unexpected bump
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A strong influent waste strength
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A high concentration of TSS
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A heavy truck load entering the plant
Frage 20
Frage
Which environment does filamentous bacteria like best?
Antworten
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Aerobic
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Anaerobic
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Facultative
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Anoxic
Frage 21
Frage
What does one cubic foot of water weigh at 4°C?
Antworten
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7.48 pounds
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8.34 pounds
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3.14159 pounds
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62.4 pounds
Frage 22
Frage
What is a higher life form in the activated sludge process....a free swimming ciliate or a stalked ciliate?
Antworten
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Free swimming ciliate
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Stalked ciliate
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They are both the same
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Rotifers are younger than free swimmers
Frage 23
Frage
What does "F" mean in the process parameter F/M ratio?
Antworten
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lbs/day volatile microorganisms
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gpd plant flow
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lbs/day influent CBODs
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gpd waste sludge
Frage 24
Frage
What does the term adsorption mean?
Antworten
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Impregnate a liquid with air
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The taking in of one substance into the body of another
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To gather onto the surface of a substance
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Soak like a sponge
Frage 25
Frage
What does the term loading refer to?
Antworten
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The pounds of MLVSS under aeration
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The cfm of air supplied to the aeration tank
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The pounds of BOD entering the aeration tank
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The amount of waste sludge removed from the system
Frage 26
Frage
Which two age parameters are most similar to each other?
Antworten
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GSA and F/M ratio
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SRT and MCRT
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SRT and GSA
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GSA and MCRT
Frage 27
Frage
What type of solids cannot be removed with typical effluent filters?
Antworten
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Settleable
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Suspended
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Total
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Dissolved
Frage 28
Frage
What is not a typical loading equivalent in domestic wastewater?
Antworten
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About 0.17 lbs BOD/person/day
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About 0.2 lbs TSS/person/day
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About 100 gal/person/day
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About 100 mg/l /NH3/person/day
Frage 29
Frage
What does the "M" mean in the process parameter F/M ratio?
Antworten
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lbs volatile microorganisms in aeration
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gpd plant flow
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lbs/day influent BOD entering aeration
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gpd waste sludge leaving aeration
Frage 30
Frage
Which has a higher pH, sodium hydroxide or aluminum sulfate?
Antworten
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Aluminum sulfate
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Sodium hydroxide
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They are both the same
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Alum has a high PH
Frage 31
Frage
What is a typical loading equivalent for TSS in domestic wastewater?
Antworten
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About 0.17 lbs/person/day
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About 0.2 lbs/person/day
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About 300 gal/person/day
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About 200 mg/L /person/day
Frage 32
Frage
What type of solids are identified in a muffle furnace test?
Antworten
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Settleable
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Suspended
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Volatile
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Dissolved
Frage 33
Frage
What is the main difference between a conventional activated sludge process and an advanced wastewater treatment process?
Antworten
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CBOD5 Removal
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TSS removal
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Nitrogen & phosphorus removal
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Metals removal
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