James McCaughey Narragansett Bay Commission Wind Turbine ...
Narragansett Bay Commission Wind Turbine Development Project
James McCaughey Renewable Energy Project Manager
James McCaughey, P.E., BCEE Barry Wenskowicz Narragansett Bay Commission
Environmental Business Council Rhode Island Chapter April 24, 2012
Narragansett Bay Commission Rhode Island’s Two Largest WWTF
Receive both Wastewater and
Stormwater Flow Provide Wastewater Collection and Treatment Services to:
Ten Cities and Towns 360,000 People
8,000 Business 241 Employees 19 Member Board of Commissioners User Rates set by RIPUC Pretreatment Program Pollution Prevention Program 27,000,000 kWh/year
NBC WWTFs Field’s Point WWTF 45 MGD (170.1 MLD) Average 65 MGD (246 MLD) Design 200 MGD (756 MLD) Primary Chlorination/De-chlorination Sludge Gravity Thickeners 4 Pumping Stations BNR Upgrade Bucklin Point WWTF – 24 MGD (90.8 MLD) Average – 46 MGD (174 MLD) Design – 116 MGD (438 MLD) Primary – BNR – UV Disinfection – Anaerobic Digestion – 3 Pumping Stations
Rhode Island WWTFs Nineteen Municipal WWTF 754 MLD (200 mgd) 78,000,000 kWh/yr
$9 M/yr 1 M Metric Tons CO2(e)/yr
Electricity Costs 16.00
14.00
New England 12.00
Cost/kWh
10.00
U.S. 8.00
6.00
4.00
2.00
1988
1990
1992
1994
1996
1998
2000
2002
Year Energy Information Administration - www.eia.doe.gov
2004
2006
2008
WWTF Energy Operating Costs $350
$300
$250
$200 $/MG
$2.8 M/YR Advanced Treatment
$150
Secondary Treatment
$100 $1.8 M/YR $50
$0 0
20
40
60 MGD
Water Environment Federation – MOP No. MFD-2
80
100
120
Air Emission Off-Sets Sulfur Dioxide:
0.3 48 lbs/MWh
Nitrogen Oxide:
1.1 40 lbs/ MWh
Carbon Dioxide:
928
lbs/ MWh
Energy Information Administration - www.eia.doe.gov
Based on Average RI Power Mixture
NBC Energy Management Outreach NBC Pollution Prevention Program 1992 - Present WWTF Renewable Energy Study 2005 - EPA Grant
$35,000 NBC Wind Energy and Biogas CHP Projects 2006 – RI Renewable Energy Fund Grant $50,000 WWTF Energy Management Systems 2008 EPA State Innovations Grant (SIG) Program $275,000
WWTF Energy Focused - Environmental Management System Project Partners Narragansett Bay Commission University of Rhode Island Rhode Island Department of
Environmental Management Rhode Island Manufacturing Extension Services EPA Region I National Grid RI WWTF Energy Roundtable
Plan
Energy Focused - Environmental Management System
Track and Benchmarking Energy Use Establish Energy Goals, Objectives, Targets and
Indicators Energy Policy Develop Energy Management Plans
Do Implement Energy Management Plan
Check Monitor and Measure
Act Review Progress and Make Adjustments Document and Communicate Success
Other P-D-C-A Approaches •ISO 14001 EMS •ISO 50001 – Energy Standard •ANSI/MSE •Asset Management •National Bio-Solids Partnership
Energy Focused - Environmental Management System Training EPA Energy Management Guidebook
for Wastewater and Water Utilities Energy Star Portfolio Manager Measure and Benchmark Energy Use Performance Energy Assessments Initial Scoping Studies – all 19 RI WWTFs Advanced Technical Assessments - 14 WWTFs Renewable Energy Assessments – 19 WWTFs
EPA - $275,000 Grant Award 2008 DOE - $86,000 ARRA Grant 2011 DOE - $3M ARRA Funds Disbursement 2011
WWTF Energy Performance Benchmarking Electrical Performance (kWh/ML)
2,000
Advanced Treatment Secondary Treatment
100 0
1
10 Average Daily Flow (ML)
100
Trend Lines from: Water Environment Federation – MOP No. MFD-2
1000
Energy Focused Environmental Management System Scoping Studies - 19 Technical Assessments - 14 EEM No. 1
Description Nitrate Sensors
Comments Installation of nitrate sensors for automatic termination of aerobic phase operation would need to save at least 23,000 kWh annually to qualify for an incentive worth $12,404. Measure costs are $30,190 and demand savings during summer months would need to be 5.9 kW on average. It may be possible for this degree of savings to be achieved.
2
Primary Sludge Pump Drive Retrofit
An existing slip drive could be replaced with a single-speed gear drive and save approximately 1.3 kW and 1,900 kWh. Costs are estimated to be around $3,000. This measure may qualify for incentives.
3
Plant Water Pump VSD
Installation of a 5-hp VSD could qualify for a $1,700 prescriptive incentive.
4
Lighting Fixture and Controls Retrofit
DMI recommends that National Grid send a project expediter to the site to review lighting retrofit opportunities. There are many T12 and low-bay metal halide fixtures that could be changed. Occupancy /vacancy sensors could be installed in many areas.
5
HVAC Controls Retrofit
The plant may be able to participate in the prescriptive EMS program and the Cool Choice program if modifications are made to the HVAC systems.
Interior Lighting 13%
Exterior Lighting 2%
Plant Support 2%
Raw Influent Pumping 15% Headworks 7%
HVAC 15%
Primary Clarifiers 5%
Sludge Handling 3% Disinfection 3%
Secondary Clarifiers 6%
Aerators 29%
Energy Focused Environmental Management System Renewable Energy Assessments - 19 Actual Power (kW)
Renewable Resource Hydroelectric Solar Biogas Small Wind Medium Wind Large Wind
Percent of Total WWTF Project Cost
5.4 10 138 12 133 328
10% 18% 246% 22% 237% 586%
$129,961 $530,560 $970,287 $455,000 $2,442,000 $4,455,000
Renewable Energy Project Cost (no grant) Cost ($/kW installed)
$60,000
Solar PV
$50,000 $40,000
Sm Wind Hydroelectric
$30,000 $20,000
Medium Wind Biogas Turbine
$10,000
Large Wind
$0 0
50
100
150
200
Actual Power Produced (kW)
250
300
350
Energy Focused Environmental Management System Energy Efficient Measures (EEMs) 45 40
Number of EEMs
35 30 25
20 15 10 5 0
Energy Efficiency Measures
Energy Focused Environmental Management System EEM Targets Project
Scheduled Implementation Date
Electric Heater Efficiency VFDs for Water Pumps VFDs for Primary Sludge Pumps VFD and Controls for Primary Sludge Pumpand Controls for Head-works VFD Exhaust Fan Heat Pump High Efficiency Linear Mixer for Digester Lighting Upgrade Lighting Upgrade Wind Turbine Renewable Energy Biogas Renewable Energy Hydroelectric Renewable Energy Total (kWh) % of Total Rhode Island WWTF Energy Use
June 2012 December 2011 December 2011 December 2011 TBD TBD TBD June 2012 June 2012 August 2012 August 2013 TBD
Estimated Annual Energy Savings (kWh)
Estimated Annual Renewable Energy Generation (kWh)
12,352 387,617 55,112 38,546 43,036 35,040 100,499 15,838 99,895
787,935 1.0%
6,200,000 5,000,000 45,000 11,245,000 14.4%
RI WWTF EF-EMS Project www.narrabay.com
RI WWTF EF-EMS
James McCaughey, P.E., BCEE Narragansett Bay Commission 401-461-8848 x 352 [email protected]
Barry Wenskowicz Pollution Prevention Engineer May 2012
James McCaughey Renewable Energy Project Manager
James McCaughey, P.E., BCEE Barry Wenskowicz Narragansett Bay Commission
Environmental Business Council Rhode Island Chapter April 24, 2012
Narragansett Bay Commission Rhode Island’s Two Largest WWTF
Receive both Wastewater and
Stormwater Flow Provide Wastewater Collection and Treatment Services to:
Ten Cities and Towns 360,000 People
8,000 Business 241 Employees 19 Member Board of Commissioners User Rates set by RIPUC Pretreatment Program Pollution Prevention Program 27,000,000 kWh/year
NBC WWTFs Field’s Point WWTF 45 MGD (170.1 MLD) Average 65 MGD (246 MLD) Design 200 MGD (756 MLD) Primary Chlorination/De-chlorination Sludge Gravity Thickeners 4 Pumping Stations BNR Upgrade Bucklin Point WWTF – 24 MGD (90.8 MLD) Average – 46 MGD (174 MLD) Design – 116 MGD (438 MLD) Primary – BNR – UV Disinfection – Anaerobic Digestion – 3 Pumping Stations
Rhode Island WWTFs Nineteen Municipal WWTF 754 MLD (200 mgd) 78,000,000 kWh/yr
$9 M/yr 1 M Metric Tons CO2(e)/yr
Electricity Costs 16.00
14.00
New England 12.00
Cost/kWh
10.00
U.S. 8.00
6.00
4.00
2.00
1988
1990
1992
1994
1996
1998
2000
2002
Year Energy Information Administration - www.eia.doe.gov
2004
2006
2008
WWTF Energy Operating Costs $350
$300
$250
$200 $/MG
$2.8 M/YR Advanced Treatment
$150
Secondary Treatment
$100 $1.8 M/YR $50
$0 0
20
40
60 MGD
Water Environment Federation – MOP No. MFD-2
80
100
120
Air Emission Off-Sets Sulfur Dioxide:
0.3 48 lbs/MWh
Nitrogen Oxide:
1.1 40 lbs/ MWh
Carbon Dioxide:
928
lbs/ MWh
Energy Information Administration - www.eia.doe.gov
Based on Average RI Power Mixture
NBC Energy Management Outreach NBC Pollution Prevention Program 1992 - Present WWTF Renewable Energy Study 2005 - EPA Grant
$35,000 NBC Wind Energy and Biogas CHP Projects 2006 – RI Renewable Energy Fund Grant $50,000 WWTF Energy Management Systems 2008 EPA State Innovations Grant (SIG) Program $275,000
WWTF Energy Focused - Environmental Management System Project Partners Narragansett Bay Commission University of Rhode Island Rhode Island Department of
Environmental Management Rhode Island Manufacturing Extension Services EPA Region I National Grid RI WWTF Energy Roundtable
Plan
Energy Focused - Environmental Management System
Track and Benchmarking Energy Use Establish Energy Goals, Objectives, Targets and
Indicators Energy Policy Develop Energy Management Plans
Do Implement Energy Management Plan
Check Monitor and Measure
Act Review Progress and Make Adjustments Document and Communicate Success
Other P-D-C-A Approaches •ISO 14001 EMS •ISO 50001 – Energy Standard •ANSI/MSE •Asset Management •National Bio-Solids Partnership
Energy Focused - Environmental Management System Training EPA Energy Management Guidebook
for Wastewater and Water Utilities Energy Star Portfolio Manager Measure and Benchmark Energy Use Performance Energy Assessments Initial Scoping Studies – all 19 RI WWTFs Advanced Technical Assessments - 14 WWTFs Renewable Energy Assessments – 19 WWTFs
EPA - $275,000 Grant Award 2008 DOE - $86,000 ARRA Grant 2011 DOE - $3M ARRA Funds Disbursement 2011
WWTF Energy Performance Benchmarking Electrical Performance (kWh/ML)
2,000
Advanced Treatment Secondary Treatment
100 0
1
10 Average Daily Flow (ML)
100
Trend Lines from: Water Environment Federation – MOP No. MFD-2
1000
Energy Focused Environmental Management System Scoping Studies - 19 Technical Assessments - 14 EEM No. 1
Description Nitrate Sensors
Comments Installation of nitrate sensors for automatic termination of aerobic phase operation would need to save at least 23,000 kWh annually to qualify for an incentive worth $12,404. Measure costs are $30,190 and demand savings during summer months would need to be 5.9 kW on average. It may be possible for this degree of savings to be achieved.
2
Primary Sludge Pump Drive Retrofit
An existing slip drive could be replaced with a single-speed gear drive and save approximately 1.3 kW and 1,900 kWh. Costs are estimated to be around $3,000. This measure may qualify for incentives.
3
Plant Water Pump VSD
Installation of a 5-hp VSD could qualify for a $1,700 prescriptive incentive.
4
Lighting Fixture and Controls Retrofit
DMI recommends that National Grid send a project expediter to the site to review lighting retrofit opportunities. There are many T12 and low-bay metal halide fixtures that could be changed. Occupancy /vacancy sensors could be installed in many areas.
5
HVAC Controls Retrofit
The plant may be able to participate in the prescriptive EMS program and the Cool Choice program if modifications are made to the HVAC systems.
Interior Lighting 13%
Exterior Lighting 2%
Plant Support 2%
Raw Influent Pumping 15% Headworks 7%
HVAC 15%
Primary Clarifiers 5%
Sludge Handling 3% Disinfection 3%
Secondary Clarifiers 6%
Aerators 29%
Energy Focused Environmental Management System Renewable Energy Assessments - 19 Actual Power (kW)
Renewable Resource Hydroelectric Solar Biogas Small Wind Medium Wind Large Wind
Percent of Total WWTF Project Cost
5.4 10 138 12 133 328
10% 18% 246% 22% 237% 586%
$129,961 $530,560 $970,287 $455,000 $2,442,000 $4,455,000
Renewable Energy Project Cost (no grant) Cost ($/kW installed)
$60,000
Solar PV
$50,000 $40,000
Sm Wind Hydroelectric
$30,000 $20,000
Medium Wind Biogas Turbine
$10,000
Large Wind
$0 0
50
100
150
200
Actual Power Produced (kW)
250
300
350
Energy Focused Environmental Management System Energy Efficient Measures (EEMs) 45 40
Number of EEMs
35 30 25
20 15 10 5 0
Energy Efficiency Measures
Energy Focused Environmental Management System EEM Targets Project
Scheduled Implementation Date
Electric Heater Efficiency VFDs for Water Pumps VFDs for Primary Sludge Pumps VFD and Controls for Primary Sludge Pumpand Controls for Head-works VFD Exhaust Fan Heat Pump High Efficiency Linear Mixer for Digester Lighting Upgrade Lighting Upgrade Wind Turbine Renewable Energy Biogas Renewable Energy Hydroelectric Renewable Energy Total (kWh) % of Total Rhode Island WWTF Energy Use
June 2012 December 2011 December 2011 December 2011 TBD TBD TBD June 2012 June 2012 August 2012 August 2013 TBD
Estimated Annual Energy Savings (kWh)
Estimated Annual Renewable Energy Generation (kWh)
12,352 387,617 55,112 38,546 43,036 35,040 100,499 15,838 99,895
787,935 1.0%
6,200,000 5,000,000 45,000 11,245,000 14.4%
RI WWTF EF-EMS Project www.narrabay.com
RI WWTF EF-EMS
James McCaughey, P.E., BCEE Narragansett Bay Commission 401-461-8848 x 352 [email protected]
Barry Wenskowicz Pollution Prevention Engineer May 2012
