DISSOLVED OXYGEN CONTROL BASED ON REAL TIME OXYGEN UPTAKE RATE ESTIMATIONProducing a stable, comprehensive aeration control system mandates that system disturbances be processed, qualified, and taken into consideration when intending to provide a measured and appropriate control action. From the Proceedings of WEFTEC 2010. |
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Process Evaluation Provides Optimization and Energy Reduction
An activated sludge process evaluation was performed on a Wastewater Treatment Plant (WWTP) that treats 662,500 cubic meters per day (m3/d). The WWTP performs well with respect to pollutant removal by achieving permit limits. However, with increased public interest in water purity, and with a projected sharp increase in energy costs in the near future, the WWTP has become interested in optimizing the process to minimize Dissolved Oxygen (DO) fluctuation, reduce operating costs, and stabilize the process operation. - from the proceedings of WEFTEC 2010.
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Effect of Ionic Strength on Ion Selective Electrodes in the Activated Sludge Process
As effluent limits and budgets continue to face downward pressure, it is becoming more and more important for wastewater treatment plants (WWTPs) to operate as efficiently as possible. Providing more information to plant operators allows them to maximize the performance of the WWTP and opens up new control strategies. One type of measurement technology that is becoming increasingly common in WWTPs is analyzers using ion selective electrodes (ISE). Ion selective electrodes have been used in laboratory settings for over 40 years, but are only recently finding use for in-situ measurement of species of interest, particularly ammonia. From the proceedings of WEFTEC 2010.
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DO Control Based on On-line Ammonia Measurement2009 Case study of a model-based, predictive aeration control system installed in Polk County, FL. |
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Energy Savings at Phoenix 23rd Avenue Wastewater Treatment Plant Using Feed-Forward Process Control
2009 Case study of advanced process controls making significant energy savings practical in a large, urban wastewater treatment plant - from the Proceedings of WEFTEC 2009
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SIDE BY SIDE COMPARISON DEMONSTRATED A 36% INCREASE OF NITROGEN REMOVAL AND 19% REDUCTION OF AERATION REQUIREMENTS USING A FEED FORWARD ONLINE OPTIMIZATION SYSTEM (2005)
As operational and capital budgets for wastewater treatment shrink and effluent limitations become more stringent, it is very important to reduce the energy consumption of aeration systems and improve treated water quality.
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A Novel Approach for Monitoring and Control of Denitrification in a Biological Nutrient Removal Facility (1999)Proceedings of the 72nd annual conference and exposition of the Water Environment Federation (WEFTEC '99), New Orleans, LA. October 9-13, 1999. |
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A Unique Approach for Assessing the Capacity of a Biological Nutrient Removal Facility (1999)Proceedings of the 72nd annual conference and exposition of the Water Environment Federation (WEFTEC '99), New Orleans, LA. October 9-13, 1999. |
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Enhancing Competitiveness of an Operations Staff: Five Years Experience with a BNR Wastewater Treatment Facility (1998).Proceedings of the 71st annual conference and exposition of the Water Environment Federation (WEFTEC '98), Orlando, Florida. October 3-7, 1998. |
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Monitoring and Control of the Nitrification Process Marine Park Water Reclamation Facility, City of Vancouver, WA. (1997)Proceedings of Pacific Northwest Pollution Control Association Conference. Seattle, WA. October 26-29, 1997. |
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Optimization of Nitrification Process By On-Line Monitoring of Nitrification Time (1997)Proceedings of "Computer Technologies for the Competitive Utility," a Pennsylvania Water Environment Association specialty conference. Philadelphia, PA. June 15-18, 1997. |
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Operational Improvements in a Biological Nutrient Removal Facility Using an Innovative Biological Activity Meter (1996)Proceedings of the 71st annual Florida Water Resources Conference, Fort Meyers, Florida. May 5-8, 1996. |
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Operator Education and an Innovative Monitoring Technology Improve Performance of a Biological Nutrient Removal Facility (1996)Proceedings of the 69th annual conference and exposition of the Water Environment Federation (WEFTEC '96), Dallas, Texas. October 5-9, 1996. |
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Performance Enhancement of a BNR Wastewater Treatment Facility Utilizing a Microcosm Reactor Equipped With a Biological Activity Meter (1996)Proceedings of the 69th annual conference and exposition of the Water Environment Federation (WEFTEC '96), Dallas, Texas. October 5-9, 1996. |
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Optimization of Biological Denitrification Through Biological Activity Monitoring: System Development (1995)Proceedings of "Automating to Improve Water Quality", a Water Environment Federation specialty conference, Minneapolis, Minnesota. June 25-28, 1995. |
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Biological Activity Monitoring for Real Time Control of Biological Nutrient Removal: A Case Study (1995)Proceedings of "Automating to Improve Water Quality", a Water Environment Federation specialty conference, Minneapolis, Minnesota. June 25-28, 1995. |