Intermittent On/Off Aeration
- Determination of Denitrification Rate
- Effluent Quality of Ashland WWTP Before and After On/Off Intermittent Aeration
- Denitrification Efficiency of Intermittent On/Off Aeration
- A 24 hour cycling monitoring
- A pilot test of effluent water-level control technology
- Cost Saving
- Summary
- Table of Figures
- Table of Tables
Biological Phosphorus Removal Design
- Characterization for Evaluation
- Potential Test
- Demonstration of Intermittent On/Off Aeration
- Biological Nutrient Removal Theory and Design
- Design of Biological Nutrient Removal Processes
- ENBIR computer-design program
Demonstration of Intermitttent On/Off Aeration at a Municipal Wastewater Treatment Plant for Denitrification and Energy Savings
Final Report
Cost Savings
Even though an effluent limit of 1 mg/L of phosphorus concentration was not achieved, the operation of intermittent aeration. The total annual electrical energy and chemical saving was $24,800 with the intermittent operation. Table 4.1 listed the detail of the cost savings.
| ANNUAL COST | before the project of intermittent operation |
during the project of intermittent operation |
Net Saving |
|---|---|---|---|
| Electrical Energy | 24 hr operation | 16 hr operation | $ 20,400 |
| Liquid Alum | 30,800 gal | 21,050 gal | 4,400 |
| Total | $ 24,800 |
The saving of liquid alum addition, which is used to remove phosphorus at the Ashland WWTP, is another evidence indicated that PAOs were induced by the operation of intermittent aeration.
More information on this topic: Gerry Novotny
Last Revised: Wednesday July 26 2006
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