OCDWEP Energy
Saving Implementations
Patricia M. Pastella, P.E.
Commissioner
Onondaga County Department of
Water Environment Protection
Ongoing Energy Savings Initiatives
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Maintenance Program
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Optimize Equipment Performance
Laser Alignment – shafts and belts
Proper Lubrication
H&V Cleaning
Boiler Rehabilitation
Force Main Cleaning
Annual Aeration System Cleaning
General Operations
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Chemical Flow Pacing
Reduced Mowing (20%)
Discourage Vehicle Idling
Energy Conservation Awareness
Past Project Highlights
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Energy Efficient Lighting Installation
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Atmospheric Evaporator – Liquid Oxygen
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$60,000 annual cost saving
VFD Replacement – Pump Stations
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$10,000 annual cost saving
1.4 year pay back
$17,000 annual cost saving
3.1 year pay back
HVAC and Boiler Improvements
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$154,000 annual cost saving
Cogeneration at Metro
 Dual
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Fuel Engine Generator
375 kw
Electricity Production – Biogas in Summer
Electricity Production – Natural Gas in
Winter
Excess Heat Recovered – Natural Gas
Usage Reduction
$237,000 annual cost saving
Historic Electric Usage
Brewerton WWTP (3.0 mgd)
3,500,000
kWh
3,000,000
2,500,000
2,000,000
2001
2002
2003
2004
2005
Year
2006
2007
2008
2009
Historic Electric Usage
Wetzel Road WWTP (3.5 mgd)
3,000,000
kWh
2,500,000
2,000,000
1,500,000
1,000,000
500,000
2001
2002
2003
2004
2005
Year
2006
2007
2008
2009
Historic Electric Usage
Meadowbrook-Limestone WWTP (6.5 mgd)
5,500,000
kWh
5,000,000
4,500,000
4,000,000
3,500,000
3,000,000
2001
2002
2003
2004
2005
Year
2006
2007
2008
2009
Historic Electric Usage
Baldwinsville-Seneca Knowles WWTP (9.0 mgd)
3,500,000
kWh
3,000,000
2,500,000
2,000,000
2001
2002
2003
2004
2005
Year
2006
2007
2008
2009
Historic Electric Usage
Oak Orchard WWTP (10.0 mgd)
5,000,000
kWh
4,500,000
4,000,000
3,500,000
3,000,000
2001
2002
2003
2004
2005
Year
2006
2007
2008
2009
Historic Electric Usage
Metro WWTP (84 mgd)
45,000,000
kWh
40,000,000
35,000,000
30,000,000
25,000,000
20,000,000
2001
2002
2003
2004
2005
Year
2006
2007
2008
2009
Revised Amended Consent
Judgment (ACJ)
 Requires
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Green/Gray Program
Abatement of Combined Sewer Overflow
95 % CSO Volume Capture by 2018
6.3 % Capture with Green Infrastructure
250 Million Gallons Capture with Green
Green Infrastructure
Why use Green?
 Air Quality
 Aesthetics
 Habitat
 Recreation
 Property Values
 Community Health
Green Infrastructure
Reduces…
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Flooding
Erosion
Stormwater Pollution
Operation, maintenance and energy
cost to treat CSOs.
Green Energy Savings
How to Calculate???
 Gray
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Treatment Alternatives Vary
Store – Treat – Discharge – Convey
Pump – Gravity Flow
Energy Savings to Capture 250 MG
with Green
Current CSO Treatment
 Treatment at Metro
 $350 per MG (power cost)
 $88,000 annual cost saving
 Treatment at Regional Treatment Facility
 $1,235 per MG (power cost)
 $309,000 annual electric cost saving
How to Abate CSOs with Green
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Porous Pavement
 Parking Lots
 Sidewalks
 Playgrounds
 Bioretention
 Rain Gardens
 Curb Extensions
 Tree Trenches/Planter Boxes
 Rain Barrels/Cisterns
 Vegetative Roofs
Save The Rain
 Completed
4 Porous Parking Lots in 2010
 Rosamond Gifford Zoo
 Syracuse Creekwalk
 Over 300 Rain Barrels
 50
Projects Planned for 2011
www.savetherain.us
Questions ?
Porous Pavement Parking Lot
Vegetative Curb Extension
Tree Trenches
Cistern, Rain Barrels, Rain Garden
Cistern
Vegetative Roof
Regional Treatment Facilities
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Midland Regional Treatment Facility
(Completed in 2008) $53 million
Metro WWTP