Module 7- Wastewater Treatment Final Exam

Final Exam questions are designed to reinforce your understanding of the lesson material. Please create a Microsoft Word document and submit your completed study questions to the instructor via email.

Definition and discussion

1. Define wastewater

2. Discuss the differences between residential and nonresidential wastewater

3. Discuss the differences between the following:
-Primary Treatment 
-Secondary Treatment 
-Tertiary Treatment 

4. Define grey water

5. Discuss examples of physical separation 

6. Discuss how flocculation can decrease the oil content and COD value of oily wastewater containing sludge

7. Define hard water

8. Discuss the differences between bacteria and enzymes, and their role in wastewater treatment

9. Discuss the aerobic and anaerobic reactions

10. Define thickening

Fill in the black

11. Natural water can be divided into two categories: surface water and _______ water

12. _________ is the application of science and engineering principles to improve the environment (air, water, and/or land resources), to provide healthy water, air, and land for human habitation and for other organisms, and to clean polluted sites.

13. The reclaimed grey water should fulfill four criteria (hygienic safety, aesthetics, _________ and economical feasibility)

14. _________, is the action of polymers to form bridges between the flocs (particles) and bind the particles into large agglomerates or clumps

15. ___________ is the separation of suspended particles that are heavier than water

16. ___________ is employed for the removal of solids greater than 10 microns in diameter

17. Alum, lime or a synthetic polyelectrolyte are examples of __________ 

18. In ___________, microorganisms convert the organic matter or other constituents in the wastewater into gases and cell tissue

19. The ___________ process is an aerobic suspended-growth process that maintains a relatively high population of micro-organisms (biomass) by recycling settled biomass back to the treatment process.


20. Create a wastewater treatment plant and strategy for treating the wastewater below:

-Dark brown in color
-Strong and putrefied smell
-High pollutant load
-Substantial amounts of total solids (TS)
-Oils and greases (OG)
-High biochemical and chemical oxygen demands (BOD5 and COD)

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