Wastewater Treatment Practice
1.
• Name the 3 steps of the wastewater treatment plan.
2.
• What is the purpose of the primary treatment step?
3.
• What is the purpose of the secondary step?
4.
• What is the purpose of the advanced treatment step?
5.
• Which step is this? What is the name?
6.
• Which step is this? What is the name?
7.
• Which step is this? What is the name?
8.
• What is the path of wastewater, starting from our homes?
9.
• Why is important to not flush down toxic chemicals like drano down the toilet?
10.
• What are the 4 tests that a wastewater treatment plant does on the water at various steps of he process?
11.
• Explain what the pH test is used for
12.
• The pH scale goes from _____ to ______. The most acidic being the ______ numbers.
13.
• Why is it important to maintain a wastewater pH between 6.6-8.5?
14.
• Explain what the purpose of the ammonia test is
15.
• What is the main source of ammonia in our wastewater?
16.
• Name the 2 reasons that ammonia is bad
17.
• What is the process of bacteria eating the ammonia and turning it into a nitrate called?
18.
• Why do we need to dilute the wastewater sample by 50% before using the ammonia test?
• What do you need to do afterwards to account for the 50% dilution?
19.
• Explain what the turbidity test is used for
20.
• Why is turbidity bad for fish?
21.
• What instrument do we use to measure turbidity?
22.
• Why do we cover the colorimeter when reading the blank and sample?
23.
• Why do we need to blank the colorimeter before using?
24.
• Explain what the Chemical Oxygen Demand test is used for
25.
• Explain the cause and effect of eutrophication.
26.
• What are the measuring units of pH, ammonia levels and turbidity?
27.
• A pH of 5 is acidic/basic?
28.
• Does coffee increase or decrease the turbidity?
29.
• Between the original wastewater and after primary treatment, what happened to– the pH?– The turbidity?– Ammonia level?
If changed, explain why.
30.
• Between the primary treatment and after secondary treatment, what happened to– the pH?– The turbidity?– Ammonia level?
If changed, explain why.
31.
• Between the secondary treatment and after advanced treatment, what happened to– the pH?– The turbidity?– Ammonia level?
If changed, explain why.
32.
• What kind of organisms were found in the activated sludge?
33.
• Why was it important to maintain oxygen levels during the secondary treatment?
34.
• What is the difference between aerobic and anaerobic bacteria? What kind of bacteria are in the sludge?
35.
• What is the purpose of Aluminum Sulfate?
36.
• Advanced treatment involves the following 2 steps:
37.
• What does the wastewater facility use to disinfect water? (2 options)
38.
• How does the plant remove chlorine form the water?