Wastewater Grade 4
Study online at https://quizlet.com/_hrxo9k
1. COD: Chemical Oxygen Demand
2. Sensors used in continuous monitoring program should not require frequent
...: Calibration to maintain their accuracy
3. Sulfuric Acid: H2SO4
4. Out of pH, suspended solids, BOD, COD, which one can be monitored contin-
uously?: pH (temperature as well)
5. The easiest way to evaluate absorption of organics in a carbon column is to
perform ...: Analysis of dissolved organics
6. BOD: biochemical oxygen demand, amount of dissolved oxygen needed by aerobic decomposers to break down
organic materials
7. Prior to using a buret for titration, The burette should be rinsed out with: Dis-
tilled water
8. POTW: Publicly Owned Treatment Works
9. Receiving Waters: all distinct bodies of water that receive runoff such as streams, lakes and rivers from a
POTW
10. Sodium hypochlorite is used as a: Liquid
11. Suspended Solids (SS): Anything that settles to the bottom of the receiving water and smothers living
things
12. Oils and Grease (O&G): Anything that will float on top of receiving and prevents oxygen from being
added
13. Total solids = suspended solids & WHAT? solids.: Dissolved
14. Grease entering a waste water treatment plant is removed by: Skimming
15. Biochemical Oxygen Demand (BOD): Anything that consumes oxygen preventing fish etc. from
getting oxygen they need
16. No industrial facility shall discharge to a POTW a waste stream with a pH
lower than: 5.5
17. Suspended Solids are removed by: Settling
18. Oils and Grease are removed by: Skimming
19. To determine the amount of organic material present in an industrial waste
stream you would use: A BOD test
20. BOD is removed by: Aeration and microorganisms
, Wastewater Grade 4
Study online at https://quizlet.com/_hrxo9k
21. Valves used to open or close only are: Ball valves (small piping)
Gate valves (large piping)
22. Along with the SS, O&G and BOD POTWs also prohibit the discharge of: 1.
Anything creating fire/explosion hazard
- worker safety
2. Anything with pH below 5.0
- acidic water dissolves concrete piping and tanks
3. Anything that obstructs flow or is a solid. - clogs piping and restricts flow
4. Anything above 104 F
- kills organisms and bacteria
5. Anything creates toxic gas
- worker safety
6. No priority pollutants Toxic Organics TTO's
- kills organisms and bacteria
7. No heavy metals
- kills organisms and bacteria and contaminates settled solids
23. Biomass or biosolids: A clump of organic material consisting of living organisms feeding on wastes and
other debris
24. Pulp and Paper Industry: High BOD, COD and suspended solids
25. Mesh equals the number of holes: Per inch
26. Battery Manufacturing: Lead and Acids
27. Slurry: The suspension of water and another solid material that does not dissolve i.e. lime slurry
28. Petroleum Industry: High suspended solids, dissolved solids and oils
29. Gate valves are most commonly used for: Lime slurries
30. Blinding: When a screen type filter clogged because all it's pores are plugged up
31. Turbidity: Measurement of the cloudiness of a water stream. Typically, this is due to suspended or colloidal
solids and they won't settle because they are so small
32. Iron and Steel Industry: Toxic organics, dissolved salts, oils, acids and solvents
33. Volatile: A substance i.e. methanol gasoline that can be evaporated at a relatively low temperature
34. Dairy Industry: High BOD and suspended solids
35. Plastics Industry: High Temperatures, oils and coolants
, Wastewater Grade 4
Study online at https://quizlet.com/_hrxo9k
36. Because lime slurries need to be vigorously agitated or the lime will settle
out and clog everything, there's only on type of pump used: Centrifugal
37. Tanning Industry: High salts, high BOD, suspended solids
38. Meat Packing Industry: High BOD and suspended solids
39. Air stripping: The removal of volatile organic compounds (VOCs) from a water stream by evaporating them
and adding them to air
40. Metal Finishing Industry: Heavy Metals
41. Types of air strippers are: Diffused aeration
Coke tray aerator
Crossflow tower
Countercurrent packed tower
42. Paint Industry: Oils
43. Laundry Industry: High pH (soap)
44. Waste discharge requirements issued on a mass basis depend upon pollu-
tant: Concentration and flow rate
45. Beverage Industry: Low pH due to carbonation
46. Equivalence point: When the amount of acid and base in a solution or equal the pH is seven
47. Air strippers are most commonly used in: Drinking water plants
48. POTW Primary treatment: Allows things that float to float and things settle to settle
49. POTW Secondary Treatment: Coverts O2 demanding compounds to more stable forms that don't
demand oxygen when released to receiving water
50. POTW Tertiary Treatment: Any special contaminants that must be removed to meet EPA performance
requirements
51. POTW Fourth Treatment: Chlorination and Dechlorination to prevent bacteria from entering the
receiving waters
52. Electrolyte: Any substance that separate into positively or negatively charged ions when dissolving in water.
The substances could be acids (lowers pH) bases (raises pH) or salts (doesn't change pH)
53. Acute Health Effect: An adverse health effect that develops immediately on exposure
54. Problems with air strippers are: The fouling such as:
calcium carbonate precipitates from CO2
Iron (Fe)
Biomass typically iron bacteria
Study online at https://quizlet.com/_hrxo9k
1. COD: Chemical Oxygen Demand
2. Sensors used in continuous monitoring program should not require frequent
...: Calibration to maintain their accuracy
3. Sulfuric Acid: H2SO4
4. Out of pH, suspended solids, BOD, COD, which one can be monitored contin-
uously?: pH (temperature as well)
5. The easiest way to evaluate absorption of organics in a carbon column is to
perform ...: Analysis of dissolved organics
6. BOD: biochemical oxygen demand, amount of dissolved oxygen needed by aerobic decomposers to break down
organic materials
7. Prior to using a buret for titration, The burette should be rinsed out with: Dis-
tilled water
8. POTW: Publicly Owned Treatment Works
9. Receiving Waters: all distinct bodies of water that receive runoff such as streams, lakes and rivers from a
POTW
10. Sodium hypochlorite is used as a: Liquid
11. Suspended Solids (SS): Anything that settles to the bottom of the receiving water and smothers living
things
12. Oils and Grease (O&G): Anything that will float on top of receiving and prevents oxygen from being
added
13. Total solids = suspended solids & WHAT? solids.: Dissolved
14. Grease entering a waste water treatment plant is removed by: Skimming
15. Biochemical Oxygen Demand (BOD): Anything that consumes oxygen preventing fish etc. from
getting oxygen they need
16. No industrial facility shall discharge to a POTW a waste stream with a pH
lower than: 5.5
17. Suspended Solids are removed by: Settling
18. Oils and Grease are removed by: Skimming
19. To determine the amount of organic material present in an industrial waste
stream you would use: A BOD test
20. BOD is removed by: Aeration and microorganisms
, Wastewater Grade 4
Study online at https://quizlet.com/_hrxo9k
21. Valves used to open or close only are: Ball valves (small piping)
Gate valves (large piping)
22. Along with the SS, O&G and BOD POTWs also prohibit the discharge of: 1.
Anything creating fire/explosion hazard
- worker safety
2. Anything with pH below 5.0
- acidic water dissolves concrete piping and tanks
3. Anything that obstructs flow or is a solid. - clogs piping and restricts flow
4. Anything above 104 F
- kills organisms and bacteria
5. Anything creates toxic gas
- worker safety
6. No priority pollutants Toxic Organics TTO's
- kills organisms and bacteria
7. No heavy metals
- kills organisms and bacteria and contaminates settled solids
23. Biomass or biosolids: A clump of organic material consisting of living organisms feeding on wastes and
other debris
24. Pulp and Paper Industry: High BOD, COD and suspended solids
25. Mesh equals the number of holes: Per inch
26. Battery Manufacturing: Lead and Acids
27. Slurry: The suspension of water and another solid material that does not dissolve i.e. lime slurry
28. Petroleum Industry: High suspended solids, dissolved solids and oils
29. Gate valves are most commonly used for: Lime slurries
30. Blinding: When a screen type filter clogged because all it's pores are plugged up
31. Turbidity: Measurement of the cloudiness of a water stream. Typically, this is due to suspended or colloidal
solids and they won't settle because they are so small
32. Iron and Steel Industry: Toxic organics, dissolved salts, oils, acids and solvents
33. Volatile: A substance i.e. methanol gasoline that can be evaporated at a relatively low temperature
34. Dairy Industry: High BOD and suspended solids
35. Plastics Industry: High Temperatures, oils and coolants
, Wastewater Grade 4
Study online at https://quizlet.com/_hrxo9k
36. Because lime slurries need to be vigorously agitated or the lime will settle
out and clog everything, there's only on type of pump used: Centrifugal
37. Tanning Industry: High salts, high BOD, suspended solids
38. Meat Packing Industry: High BOD and suspended solids
39. Air stripping: The removal of volatile organic compounds (VOCs) from a water stream by evaporating them
and adding them to air
40. Metal Finishing Industry: Heavy Metals
41. Types of air strippers are: Diffused aeration
Coke tray aerator
Crossflow tower
Countercurrent packed tower
42. Paint Industry: Oils
43. Laundry Industry: High pH (soap)
44. Waste discharge requirements issued on a mass basis depend upon pollu-
tant: Concentration and flow rate
45. Beverage Industry: Low pH due to carbonation
46. Equivalence point: When the amount of acid and base in a solution or equal the pH is seven
47. Air strippers are most commonly used in: Drinking water plants
48. POTW Primary treatment: Allows things that float to float and things settle to settle
49. POTW Secondary Treatment: Coverts O2 demanding compounds to more stable forms that don't
demand oxygen when released to receiving water
50. POTW Tertiary Treatment: Any special contaminants that must be removed to meet EPA performance
requirements
51. POTW Fourth Treatment: Chlorination and Dechlorination to prevent bacteria from entering the
receiving waters
52. Electrolyte: Any substance that separate into positively or negatively charged ions when dissolving in water.
The substances could be acids (lowers pH) bases (raises pH) or salts (doesn't change pH)
53. Acute Health Effect: An adverse health effect that develops immediately on exposure
54. Problems with air strippers are: The fouling such as:
calcium carbonate precipitates from CO2
Iron (Fe)
Biomass typically iron bacteria
