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Water Services Training Group

Water Services Training Group. 13 th Annual Conference 10 th September 2009. Energy Efficiency Benchmarking. Jim McGuire Senior Engineer North Tipperary County Council. Acknowledgements:. WRC , Swindon Department of Environment, Heritage and Local Government Eoin ODonoghue, NTCC

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Water Services Training Group

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  1. Water Services Training Group 13th Annual Conference 10th September 2009

  2. Energy Efficiency Benchmarking Jim McGuire Senior Engineer North Tipperary County Council

  3. Acknowledgements: • WRC , Swindon • Department of Environment, Heritage and Local Government • Eoin ODonoghue, NTCC • Tipperary Energy Agency

  4. Energy: Why Worry? • Reducing availability • Peripherality • Climate Change • Energy costs

  5. Policy Drivers • Kyoto Accord • EU Targets • 20% reduction CO2 emissions by 2020 • Irish National targets • 33% energy reduction in public sector by 2020

  6. Energy use in Local Authorities

  7. PROJECT OBJECTIVES: • Energy: how much are we using, where are we using it and how do we compare with each other? • What is the benchmark for energy efficient treatment? • What can be reasonably achieved in terms of further efficiencies on a site-specific basis? Meeting the Challenges of the Changed Economic Environment Annual Conference September 2009

  8. Project Partners Meeting the Challenges of the Changed Economic Environment Annual Conference September 2009

  9. Is this a good apple?

  10. Can we compare?

  11. Project Phases: • Phase 1 - Development • Develop benchmarking programme • Develop Software • Phase 2 – Implementation at pilot scale • Phase 3 – Roll-out to other works

  12. Project Development • Benchmarking best practice review • Develop energy performance indicators: • Water treatment • Wastewater treatment • Sludge treatment and odour control • Establish measurements & measurement frequency • Develop software

  13. Steps to build a new site • Gain access to web-based software • Build the schematic • Enter static data • Upload time series data • Batch run • Display reports

  14. Software Model Building and Outputs

  15. Water: Coolbawn Schematic

  16. Waste Water:Nenagh Schematic

  17. Static Data Input

  18. Data input (time series data) Fill in excel Sheet Upload data onto site View loaded data

  19. Waste Water: New Meters • Electrical Sub-meters Inlet works Rotors O.D No. 1 Rotors O.D No. 2 WAS pumps RAS Pumps Dewatering • Flow Meters: WAS

  20. Water: Coolbawn New Meters • Electrical Sub-Meters • Raw water abstraction pumps • Back wash pumps and blowers • Dewatering • Finished water high lift pumps

  21. Flowmeter, Sub-Meters

  22. Benchmarking Software output • Routine reports • Graphs • Detailed reports • Comparison reports within company • Comparison reports between companies

  23. Software output (Water) • Routine report (table) for each process and whole works • Energy performance indicators • Actual/Theoretical EPI (kWh/Ml) • Actual/Theoretical EPI (kWh/Ml/m) (Pumps)

  24. Routine reports (Wastewater) Wider range of Energy Performance Indicators (EPI) for Wastewater • Actual/Theoretical EPI (kWh/Ml) • Actual/Theoretical EPI aeration efficiency (Activated Sludge) • Actual/Theoretical EPI (kWh/kgBOD) (Activated Sludge) • Actual/Theoretical EPI (kWh/kgNH3-N) (Activated Sludge) • Actual/Theoretical EPI (kWh/Ml/m) (Pumps)

  25. Water: High Lift Pump Coolbawn • Comparison with other sites: • Energy Performance Indicator: KWH/ML/M

  26. Water: Abstraction Pump Coolbawn • Comparison with other sites • Energy Performance Indicator: kWh/Ml/m

  27. Wastewater Pumping: Nenagh Comparison with other sites Energy Performance Indicator kWh/1000m3/m

  28. Water: Abstraction Pump Change

  29. Waste Water: Activated Sludge Comparison with other sites EPI is kWh/1000m3

  30. Waste Water: Activated Sludge Comparison with other sites EPI is kWh/kgBOD

  31. Water: Energy Use Coolbawn

  32. Waste Water: Energy use

  33. Other Features of Project Website • Best Practice Area • Updates of Software Users Guide • Report on EPI • Report on Measurement • Report on Sub-metering • Reports on Innovation • Discussion Area

  34. Conclusions • Software allows • International comparison of processes • Within company comparisons • Best Practice Area • Discussion Area • Possible Improvements • More participation • Greater time frame flexibility • Focus on high energy processes

  35. FINAL WORD MANAGING ENERGY CONSUMPTION RESULTS IN VALUE FOR MONEY

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