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Environmental Engineering 2

Instructions:

Answer 36 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Point of pre treatment
Add salt
Forms clear interface between particles and supernatant( big word) - particles move around the water
Remove the dead pigs - stuff that would hurt the pumps
Discrete - floculation - hindered - compression

2. Enmeshment in Sweep Floc
Need enough to make it happen - don't shear the floc though
High Molecular Weight Synthetics
Very pH dependent - grab pieces
Forms clear interface between particles and supernatant( big word) - particles move around the water

3. Dichotomy of energy level for floculation

4. CL catch 22
Settling of floculant particles
Want pH high for corrosion but lower for HOCL
High pH and cold is bad
Chemically - Aerobically - Anaerobically

5. What is special about chloramine
Particle in a medium - they don't interact with other particles
Optimal dose depends on charge and concentration
Last chance to remove particles
Always the same dose needed - but that dose is higher

6. What is the effect of temperature and pH
Acts like a sponge - water moves around particles
High pH and cold is bad
Optimal dose depends on charge and concentration
Compress double layer - adsoprtion and nuetralization - enmeshment - particle bridging

7. Bridging
Remove all flocculated particles
Fixed films
Last chance to remove particles
High Molecular Weight Synthetics

8. Differential Sedimentatioin
Remove the dead pigs - stuff that would hurt the pumps
Not in my back yard - nutrient overload - crops
De watering - belt press and centrifuge
Big Partices Catch little ones

9. Adsorption and Charge Nuetralization
Remove viruses and bacteria that slipped through filter
Turn a large number of small particles into a small number of large particles
Optimal dose depends on charge and concentration
Easy/Costly hard to dewater

10. where is the break point in chlorination and what happens after
The second dip in the graph - free chlorine is formed
Cheap - low biosolids - resistant to shock - simple
Remove all flocculated particles
Remove as many organic and non organic particles as possible

11. Flocuation settling
Add salt
Settling of floculant particles
Low BOD - High suspended solids - no control - does not match limits`
No residual

12. Advantage of trickling filter
OCL
Cheap - low biosolids - resistant to shock - simple
De watering - belt press and centrifuge
Very pH dependent - grab pieces

13. 4 mechanisms
Discrete - floculation - hindered - compression
Compress double layer - adsoprtion and nuetralization - enmeshment - particle bridging
Remove as many organic and non organic particles as possible
Remove viruses and bacteria that slipped through filter

14. Purpose of sedimentation in waste water
Remove as many organic and non organic particles as possible
Add salt
Need enough to make it happen - don't shear the floc though
Settling of floculant particles

15. Higher pH gives more
OCL
Chemically - Aerobically - Anaerobically
High Molecular Weight Synthetics
Starts high then goes down like a parabolla as the particles settle then goes back up as it starts to jam

16. Discrete Sedimentation

17. Purpose of sedimentation in drinking water
Particle in a medium - they don't interact with other particles
Remove all flocculated particles
Cheap - low biosolids - resistant to shock - simple
Low BOD - High suspended solids - no control - does not match limits`

18. Stabilization 3 ways
Chemically - Aerobically - Anaerobically
Turn a large number of small particles into a small number of large particles
Last chance to remove particles
Remove all flocculated particles

19. Primary clarifier uses _____ removes _____
Sedimentation - suspended solids
High pH and cold is bad
Big Partices Catch little ones
Cheap - low biosolids - resistant to shock - simple

20. What is thickening - name 2 ways
Add salt
Cheap - low biosolids - resistant to shock - simple
De watering - belt press and centrifuge
Remove all flocculated particles

21. Goal for drinking water disinfection
Residual at tap
Floating upside down
High Molecular Weight Synthetics
Forms clear interface between particles and supernatant( big word) - particles move around the water

22. Hinderded Settling
Remove as many organic and non organic particles as possible
Forms clear interface between particles and supernatant( big word) - particles move around the water
Need enough to make it happen - don't shear the floc though
RMS velocity gradient

23. Headloss change over time
Sedimentation - suspended solids
Discrete - floculation - hindered - compression
Turn a large number of small particles into a small number of large particles
Starts high then goes down like a parabolla as the particles settle then goes back up as it starts to jam

24. G
Chemically - Aerobically - Anaerobically
RMS velocity gradient
Residual at tap
Sedimentation - suspended solids

25. Land applicatioin worries
Settling of floculant particles
OCL
Not in my back yard - nutrient overload - crops
Sedimentation - suspended solids

26. Compression Settling
Easy/Costly hard to dewater
Acts like a sponge - water moves around particles
Not in my back yard - nutrient overload - crops
Remove viruses and bacteria that slipped through filter

27. Purpose of Floculation
Starts high then goes down like a parabolla as the particles settle then goes back up as it starts to jam
Floating upside down
No residual
Turn a large number of small particles into a small number of large particles

28. filtration is the...
Settling of floculant particles
Low BOD - High suspended solids - no control - does not match limits`
The second dip in the graph - free chlorine is formed
Last chance to remove particles

29. Disadvantages of trickling
Settling of floculant particles
Low BOD - High suspended solids - no control - does not match limits`
Sedimentation - suspended solids
Always the same dose needed - but that dose is higher

30. Sedimentation
Chemically - Aerobically - Anaerobically
No residual
Floating upside down
Discrete - floculation - hindered - compression

31. 4 types of sedimentation
Discrete - floculation - hindered - compression
No residual
De watering - belt press and centrifuge
Very pH dependent - grab pieces

32. Secondary Clairfier removes _____
Fixed films
Very pH dependent - grab pieces
Low BOD - High suspended solids - no control - does not match limits`
No residual

33. Disinfection
The second dip in the graph - free chlorine is formed
Starts high then goes down like a parabolla as the particles settle then goes back up as it starts to jam
Remove viruses and bacteria that slipped through filter
Fixed films

34. Goal for wastewater disinfection
Chemically - Aerobically - Anaerobically
Optimal dose depends on charge and concentration
No residual
Forms clear interface between particles and supernatant( big word) - particles move around the water

35. Advantage/Disadvantage of Aerobic digestion
Starts high then goes down like a parabolla as the particles settle then goes back up as it starts to jam
Discrete - floculation - hindered - compression
Easy/Costly hard to dewater
Forms clear interface between particles and supernatant( big word) - particles move around the water

36. Compress double layer
Fixed films
Add salt
Discrete - floculation - hindered - compression
Want pH high for corrosion but lower for HOCL

?:?:)

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Test your basic knowledge |

Environmental Engineering 2

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Adobe Illustrator Shortcuts

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Adobe Photoshop CS 5 Keyboard Shortcuts

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After Effects Keyboard Shortcuts

Agile Development

Agile Scrum Methodology

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Android Programming

Animation

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