The use of mathematical modeling and pilot plant testing to develop a new biological phosphorus and nitrogen removal process
A mechanistic mathematical model for carbon oxidation, nitrogen removal, and enhanced biological phosphorus removal was used to develop the Step Bio-P process, a new biological phosphorus and nitrogen removal process with a step-feed configuration. A 9,000-L pilot plant with diurnally varying influent process loading rates was operated to verify the model results and to optimize the Step Bio-P process for application at the lethbridge, Alberta, Canada, wastewater treatment plant. The pilot plant was operated for 10 months. An automatic on-line data acquisition system with multiple sampling and metering points for dissolved oxygen, mixed liquor suspended solids, ammonia-nitrogen, nitrate-nitrogen, ortho-phosphate, and flow rates was used. A sampling program to obtain off-line data was carried out to verify the information from the on-line system and monitor additional parameters. The on-line and off-line data were used to recalibrate the model, which was used as an experimental design and process optimization tool.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 290107
- Journal Information:
- Water Environment Research, Vol. 70, Issue 6; Other Information: PBD: Sep-Oct 1998
- Country of Publication:
- United States
- Language:
- English
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