Meeting the Challenges of the Changed Economic Environment Annual Conference September 2009 Water Services Training Group 13 th Annual Conference 10 th.

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Presentation transcript:

Meeting the Challenges of the Changed Economic Environment Annual Conference September 2009 Water Services Training Group 13 th Annual Conference 10 th September 2009

Meeting the Challenges of the Changed Economic Environment Annual Conference 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 Tipperary Energy Agency

Energy: Why Worry? Reducing availability Peripherality Climate Change Energy costs

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

Energy use in Local Authorities

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

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

Is this a good apple?

Can we compare?

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

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

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

Software Model Building and Outputs

Water: Coolbawn Schematic

Waste Water:Nenagh Schematic

Static Data Input

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

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

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

Flowmeter, Sub-Meters

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

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)

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)

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

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

Wastewater Pumping: Nenagh Comparison with other sites Energy Performance Indicator kWh/1000m 3 /m

Water: Abstraction Pump Change

Waste Water: Activated Sludge Comparison with other sites EPI is kWh/1000m 3

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

Water: Energy Use Coolbawn

Waste Water: Energy use

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

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

FINAL WORD MANAGING ENERGY CONSUMPTION RESULTS IN VALUE FOR MONEY