11787095
Descripción
Test por Dean Lampman, actualizado hace más de 1 año
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Creado por Dean Lampman
hace alrededor de 7 años
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Pregunta 1
Pregunta
What is the volume of 1 ft3 of water?
Respuesta
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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
Pregunta 2
Pregunta
What is considered to be a neutral pH?
Respuesta
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6.5
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14.0
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10.0
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7.0
Pregunta 3
Pregunta
What does the units parts per million (ppm) mean ?
Respuesta
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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
Pregunta 4
Pregunta
Which is the biological process that follows primary treatment?
Respuesta
-
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
Pregunta 5
Pregunta
Which of the following is considered to be the least harmful bacteria?
Respuesta
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Typhoid
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Fecal coliform
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Cholera
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Streptococcus
Pregunta 6
Pregunta
Which is the physical process that follows an aeration tank?
Respuesta
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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
Pregunta 7
Pregunta
What does the unit parts per million (ppm) mean?
Respuesta
-
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
Pregunta 8
Pregunta
What is another term for inorganic solids?
Respuesta
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Volatile
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Non-volatile
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Dissolved
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Soluble
Pregunta 9
Pregunta
What does the term aliquot mean?
Respuesta
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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
Pregunta 10
Pregunta
What is the BOD test a measure of ?
Respuesta
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Suspended solids
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Organic content
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Dissolved solids
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Alkalinity
Pregunta 11
Pregunta
Which type of wastewater typically has the highest demand for oxygen?
Respuesta
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Domestic
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Storm water
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Sanitary
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Industrial
Pregunta 12
Pregunta
What is the correct incubation time and temperature for the BOD test?
Respuesta
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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
Pregunta 13
Pregunta
What is the term for a liquid or sludge with a pH of 6.0?
Respuesta
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Alkaline
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Neutral
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Basic
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Acidic
Pregunta 14
Pregunta
What are very small, finely-divided solids known as:
Respuesta
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Settleable
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Total
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Colloidal
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Inert
Pregunta 15
Pregunta
Which of the following best describes the term anoxic?
Respuesta
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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
Pregunta 16
Pregunta
Which is a higher life form in the activated sludge process.... a free swimming ciliate, a stalked ciliate, or a rotifer?
Respuesta
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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
Pregunta 17
Pregunta
Which term describes the conversion of ammonia nitrogen to oxidized (usually nitrate)?
Respuesta
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Fermentation
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Log Growth
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Nitrification
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Denitrification
Pregunta 18
Pregunta
What will organic material do in a muffle furnace?
Respuesta
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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
Pregunta 19
Pregunta
What is the best definition of a shock load?
Respuesta
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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
Pregunta 20
Pregunta
Which environment does filamentous bacteria like best?
Respuesta
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Aerobic
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Anaerobic
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Facultative
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Anoxic
Pregunta 21
Pregunta
What does one cubic foot of water weigh at 4°C?
Respuesta
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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
Pregunta 22
Pregunta
What is a higher life form in the activated sludge process....a free swimming ciliate or a stalked ciliate?
Respuesta
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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
Pregunta 23
Pregunta
What does "F" mean in the process parameter F/M ratio?
Respuesta
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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
Pregunta 24
Pregunta
What does the term adsorption mean?
Respuesta
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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
Pregunta 25
Pregunta
What does the term loading refer to?
Respuesta
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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
Pregunta 26
Pregunta
Which two age parameters are most similar to each other?
Respuesta
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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
Pregunta 27
Pregunta
What type of solids cannot be removed with typical effluent filters?
Respuesta
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Settleable
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Suspended
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Total
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Dissolved
Pregunta 28
Pregunta
What is not a typical loading equivalent in domestic wastewater?
Respuesta
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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
Pregunta 29
Pregunta
What does the "M" mean in the process parameter F/M ratio?
Respuesta
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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
Pregunta 30
Pregunta
Which has a higher pH, sodium hydroxide or aluminum sulfate?
Respuesta
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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
Pregunta 31
Pregunta
What is a typical loading equivalent for TSS in domestic wastewater?
Respuesta
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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
Pregunta 32
Pregunta
What type of solids are identified in a muffle furnace test?
Respuesta
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Settleable
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Suspended
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Volatile
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Dissolved
Pregunta 33
Pregunta
What is the main difference between a conventional activated sludge process and an advanced wastewater treatment process?
Respuesta
-
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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