1. Biological Phosphorus Removal from Wastewater Effluents
Erick Griffiths
BIE 6870
2/28/08
9/12/2018
Erick Griffiths

2. Objective
Use biological treatments for P removal down to regulatory levels.
9/12/2018
9/12/2018
Erick Griffiths
Erick Griffiths

3. Outline Introduction Methods Results Conclusion Future Work 9/12/2018
Erick Griffiths
Erick Griffiths

4. Introduction Aerated Lagoons Headworks Effluent 14 MGD A2 A1 B2 C B1 D
9/12/2018
9/12/2018
Erick Griffiths
Erick Griffiths

5. Introduction
9/12/2018
9/12/2018
Erick Griffiths
Erick Griffiths

6. Introduction
Proposed limit: 0.09 mg/l
9/12/2018
Erick Griffiths

7. Introduction N limited during the summer. T limited during the winter.
9/12/2018
9/12/2018
Erick Griffiths
Erick Griffiths

8. Introduction
9/12/2018
9/12/2018
Erick Griffiths
Erick Griffiths

9. Introduction
9/12/2018
Erick Griffiths

10. Methods N Experiment Setup 3 Nitrogen Sources Urea Ammonium Chloride
Sodium Nitrate
Ammonium
Nitrate
0.5 g/l
Urea
Control
9/12/2018
9/12/2018
Erick Griffiths
Erick Griffiths

11. Refrigerated Incubator
Methods
T Experiment Setup
Cold Room 4 C
Refrigerated Incubator
10 C
4 Temperatures
4 C
10 C
20 C
30 C
Constant Temp. Room
30 C
Lab
20 C
9/12/2018
Erick Griffiths

12. Genesys 5 Spectrophotometer
Methods
Genesys 5 Spectrophotometer
Samples Collection
One month time period
Filtered
HACH Tests
Orthophosphate (PO4)
Nitrogen, Ammonia (NH3- N)
9/12/2018
Erick Griffiths

13. Results 0.09mg/l Below Detection Limit 9/12/2018 9/12/2018
Control
Urea
Ammonium
Nitrate
0.09mg/l
Below Detection Limit
9/12/2018
9/12/2018
Erick Griffiths
Erick Griffiths

14. Results 0.098 mg/l 0.129 mg/l Below 0.009 mg/l 9/12/2018
Erick Griffiths

15. Conclusion
Adding nitrate during the summer months will improve algal growth and P removal down to regulatory levels.
P removal is possible at lower temperatures.
9/12/2018
Erick Griffiths

16. Future Work Dissolved Air Floatation (DAF) Solid Liquid Separation
Flocculation Experiments
9/12/2018
9/12/2018
Erick Griffiths
Erick Griffiths

17. Future Work Lipid extraction for the production of biodiesel
Methane production
9/12/2018
Erick Griffiths

18. Reference
“Sewage lagoons on way out?” The Herald Journal, Vol. 98, No.116, April 26, 2007.
“Genesys 5 Spectrophotometer” Accessed Feb. 26, 2007.
“DBT DAF Batch Tester” Accessed Feb. 26, 2007.
“DAF/ DNF Clarifiers and Thickeners” Accessed Feb. 26, 2007.
9/12/2018
9/12/2018
Erick Griffiths
Erick Griffiths

19. Questions ?