General Wastewater Knowledge Crossword
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Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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Across:

2. Equivalent to milligram per liter
3. Least harmful non-pathogenic bacteria
5. Chemical process used for disinfection
7. Water leaking into a pipeline
8. Alum ... aluminum ____________
10. Process that removes screenings and grit
12. Sludge Volume Index
13. This material will not typically burn in a muffle furance
14. Solids not typically removed through effluent filtration
15. NO3
17. Hydraulic or organic ____________ ... aeration tanks & clarifiers
18. Very low dissolved oxygen ... nearly anaerobic
20. Small finely divided solids
21. Ratio of _________ to microorganisms

Down:

1. Conversion of ammonia nitrogen to oxidized nitrogen
2. Power of the hydrogen ion concentration
4. Combination of ammonia and organic nitrogen
6. Mr. Gould invented this
9. A high life form in activated sludge process
11. Measurement of bacterial activity
16. A portion of a sample
19. Nitrite