murting Kitrate to nitrite itrogen yas 15. Denitrifying bacteria need which of the following conditions to denitrify: a. Aerobic b. Anaerobic C. Anoxic d. Acidic 16. Nitrogen can be removed from wastewater biologically by which of the following methods: a. Gas Stripping b. Breakpoint Chlorination c. Activated Sludge d. lon Exchange 17. Kjeldahl nitrogen consists of: a. Organic nitrogen and ammonia nitrogen b. Inorganic nitrogen and ammonia nitrogen c. Inorganic nitrogen and nitrite d. Inorganic nitrogen and nitrate 18. In order to start denitrification process, dissolved oxygen concentration should be: a. 0.3 - 1.0 mg/l c. Less than 0.3 mg/l b. Greater than 1.0 mg/l d. 0.0 mg/l 19. When ammonia stripping is used to remove nitrogen, the pH should be: a. Less than 7,0 b. Between 7.5 and 8.5 c. Between 9.0-10.0 d. Between 10,5 and 11.5 20. Which of the following is least likely considered when applying chemical for phosphorus removal?: a. Mixing zone b. Flocculation zone c. Injection point d. Ambient air temperature 21. A stable inorganic form of phosphorus found in waste streams is called: a. Orthophosphate c. Organic phosphate b. Polyphosphate d. Paraphosphate 22. Which of the following is not commonly applied to wastewater for phosphorus removal?: a. Ferrous Chloride c. Sodium Hypochlorite b. Ferric Chloride d. Aluminum Sulfate
murting Kitrate to nitrite itrogen yas 15. Denitrifying bacteria need which of the following conditions to denitrify: a. Aerobic b. Anaerobic C. Anoxic d. Acidic 16. Nitrogen can be removed from wastewater biologically by which of the following methods: a. Gas Stripping b. Breakpoint Chlorination c. Activated Sludge d. lon Exchange 17. Kjeldahl nitrogen consists of: a. Organic nitrogen and ammonia nitrogen b. Inorganic nitrogen and ammonia nitrogen c. Inorganic nitrogen and nitrite d. Inorganic nitrogen and nitrate 18. In order to start denitrification process, dissolved oxygen concentration should be: a. 0.3 - 1.0 mg/l c. Less than 0.3 mg/l b. Greater than 1.0 mg/l d. 0.0 mg/l 19. When ammonia stripping is used to remove nitrogen, the pH should be: a. Less than 7,0 b. Between 7.5 and 8.5 c. Between 9.0-10.0 d. Between 10,5 and 11.5 20. Which of the following is least likely considered when applying chemical for phosphorus removal?: a. Mixing zone b. Flocculation zone c. Injection point d. Ambient air temperature 21. A stable inorganic form of phosphorus found in waste streams is called: a. Orthophosphate c. Organic phosphate b. Polyphosphate d. Paraphosphate 22. Which of the following is not commonly applied to wastewater for phosphorus removal?: a. Ferrous Chloride c. Sodium Hypochlorite b. Ferric Chloride d. Aluminum Sulfate
Chapter16: Infection Control And Standard Precautions
Section: Chapter Questions
Problem 6RQ
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solve in short (15,16,17,18),thanx.
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nterting hitrate to nitrite
10 Titiogen yas
15. Denitrifying bacteria need which of the following conditions to denitrify:
a. Aerobic
b. Anaerobic
C. Anoxic
d. Acidic
16. Nitrogen can be removed from wastewater biologically by which of the following methods.
a. Gas Stripping
b. Breakpoint Chlorination c. Activated Sludge d. lon Exchange
17. Kjeldahl nitrogen consists of:
a. Organic nitrogen and ammonia nitrogen
b. Inorganic nitrogen and ammonia nitrogen
c. Inorganic nitrogen and nitrite
d. Inorganic nitrogen and nitrate
18. In order to start denitrification process, dissolved oxygen concentration should be:
a. 0.3 - 1.0 mg/l c. Less than 0.3 mg/l b. Greater than 1.0 mg/l d. 0.0 mg/l
19. When ammonia stripping is used to remove nitrogen, the pH should be:
a. Less than 7,0 b. Between 7.5 and 8.5 c. Between 9.0-10.0 d. Between 10.5 and 11.5
20. Which of the following is least likely considered when applying chemical for phosphorus removal?:
a. Mixing zone b. Flocculation zone c. Injection point d. Ambient air temperature
21. A stable inorganic form of phosphorus found in waste streams is called:
a. Orthophosphate c. Organic phosphate b. Polyphosphate d. Paraphosphate
22. Which of the following is not commonly applied to wastewater for phosphorus removal?:
a. Ferrous Chloride c. Sodium Hypochlorite b. Ferric Chloride d. Aluminum Sulfate
>
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