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General Wastewater Knowledge

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Wastewater Wastewater Treatment Study Material Quiz on General Wastewater Knowledge, created by Dean Lampman on 18/12/2017.
Dean Lampman
Quiz by Dean Lampman, updated more than 1 year ago
Dean Lampman
Created by Dean Lampman over 6 years ago
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Resource summary

Question 1

Question
What is the volume of 1 ft3 of water?
Answer
  • 8.34 gal
  • 62.4 gal
  • 92.84 gal
  • 7.48 gal

Question 2

Question
What is considered to be a neutral pH?
Answer
  • 6.5
  • 14.0
  • 10.0
  • 7.0

Question 3

Question
What does the units parts per million (ppm) mean ?
Answer
  • 1 pound per million gallons
  • 1 gallon per million pounds
  • 8.34 pounds per million gallons
  • 10 milligrams per liter

Question 4

Question
Which is the biological process that follows primary treatment?
Answer
  • Preliminary treatement
  • Tertiary treatement
  • Activated sludge process
  • Secondary clarification
  • Chlorination

Question 5

Question
Which of the following is considered to be the least harmful bacteria?
Answer
  • Typhoid
  • Fecal coliform
  • Cholera
  • Streptococcus

Question 6

Question
Which is the physical process that follows an aeration tank?
Answer
  • Preliminary treatement
  • Tertiary treatment
  • Activated sludge process
  • Secondary clarification
  • Chlorination

Question 7

Question
What does the unit parts per million (ppm) mean?
Answer
  • 1 pound per million pounds
  • 1 gallon per million gallons
  • 8.34 pounds per million gallons
  • 1 milligram per liter
  • All of the available answers
  • None of the available answers

Question 8

Question
What is another term for inorganic solids?
Answer
  • Volatile
  • Non-volatile
  • Dissolved
  • Soluble

Question 9

Question
What does the term aliquot mean?
Answer
  • Composite sample
  • Grab sample
  • The total volume of sample
  • A portion of a sample

Question 10

Question
What is the BOD test a measure of ?
Answer
  • Suspended solids
  • Organic content
  • Dissolved solids
  • Alkalinity

Question 11

Question
Which type of wastewater typically has the highest demand for oxygen?
Answer
  • Domestic
  • Storm water
  • Sanitary
  • Industrial

Question 12

Question
What is the correct incubation time and temperature for the BOD test?
Answer
  • 5 days at 20°F
  • 5 days at 20°C
  • 20 days at 5°C
  • 5 days at 68°C

Question 13

Question
What is the term for a liquid or sludge with a pH of 6.0?
Answer
  • Alkaline
  • Neutral
  • Basic
  • Acidic

Question 14

Question
What are very small, finely-divided solids known as:
Answer
  • Settleable
  • Total
  • Colloidal
  • Inert

Question 15

Question
Which of the following best describes the term anoxic?
Answer
  • High dissolved oxygen is present
  • Nearly anaerobic; very low dissolved oxygen but nitrates and/or nitrites are present
  • Completely anaerobic; no dissolved oxygen, nitrates, or nitrites
  • Nitrates are very low

Question 16

Question
Which is a higher life form in the activated sludge process.... a free swimming ciliate, a stalked ciliate, or a rotifer?
Answer
  • Free swimming ciliate
  • Stalked ciliate
  • Rotifer
  • They are all the same

Question 17

Question
Which term describes the conversion of ammonia nitrogen to oxidized (usually nitrate)?
Answer
  • Fermentation
  • Log Growth
  • Nitrification
  • Denitrification

Question 18

Question
What will organic material do in a muffle furnace?
Answer
  • it will burn
  • it will not burn
  • it will change to inorganic material
  • It will convert to dissolved solids

Question 19

Question
What is the best definition of a shock load?
Answer
  • An unexpected bump
  • A strong influent waste strength
  • A high concentration of TSS
  • A heavy truck load entering the plant

Question 20

Question
Which environment does filamentous bacteria like best?
Answer
  • Aerobic
  • Anaerobic
  • Facultative
  • Anoxic

Question 21

Question
What does one cubic foot of water weigh at 4°C?
Answer
  • 7.48 pounds
  • 8.34 pounds
  • 3.14159 pounds
  • 62.4 pounds

Question 22

Question
What is a higher life form in the activated sludge process....a free swimming ciliate or a stalked ciliate?
Answer
  • Free swimming ciliate
  • Stalked ciliate
  • They are both the same
  • Rotifers are younger than free swimmers

Question 23

Question
What does "F" mean in the process parameter F/M ratio?
Answer
  • lbs/day volatile microorganisms
  • gpd plant flow
  • lbs/day influent CBODs
  • gpd waste sludge

Question 24

Question
What does the term adsorption mean?
Answer
  • Impregnate a liquid with air
  • The taking in of one substance into the body of another
  • To gather onto the surface of a substance
  • Soak like a sponge

Question 25

Question
What does the term loading refer to?
Answer
  • The pounds of MLVSS under aeration
  • The cfm of air supplied to the aeration tank
  • The pounds of BOD entering the aeration tank
  • The amount of waste sludge removed from the system

Question 26

Question
Which two age parameters are most similar to each other?
Answer
  • GSA and F/M ratio
  • SRT and MCRT
  • SRT and GSA
  • GSA and MCRT

Question 27

Question
What type of solids cannot be removed with typical effluent filters?
Answer
  • Settleable
  • Suspended
  • Total
  • Dissolved

Question 28

Question
What is not a typical loading equivalent in domestic wastewater?
Answer
  • About 0.17 lbs BOD/person/day
  • About 0.2 lbs TSS/person/day
  • About 100 gal/person/day
  • About 100 mg/l /NH3/person/day

Question 29

Question
What does the "M" mean in the process parameter F/M ratio?
Answer
  • lbs volatile microorganisms in aeration
  • gpd plant flow
  • lbs/day influent BOD entering aeration
  • gpd waste sludge leaving aeration

Question 30

Question
Which has a higher pH, sodium hydroxide or aluminum sulfate?
Answer
  • Aluminum sulfate
  • Sodium hydroxide
  • They are both the same
  • Alum has a high PH

Question 31

Question
What is a typical loading equivalent for TSS in domestic wastewater?
Answer
  • About 0.17 lbs/person/day
  • About 0.2 lbs/person/day
  • About 300 gal/person/day
  • About 200 mg/L /person/day

Question 32

Question
What type of solids are identified in a muffle furnace test?
Answer
  • Settleable
  • Suspended
  • Volatile
  • Dissolved

Question 33

Question
What is the main difference between a conventional activated sludge process and an advanced wastewater treatment process?
Answer
  • CBOD5 Removal
  • TSS removal
  • Nitrogen & phosphorus removal
  • Metals removal
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