1 Identification of optimal strategies for energy management and reducing carbon dioxide emission at the Blue Plains Advanced Wastewater Treatment Plant (AWTP) Chalida U-tapao Chalida U-tapao Steven A. Gabriel, Christopher Peot and Steven A. Gabriel, Christopher Peot and Mark Ramirez Mark Ramirez Dept. of Civil & Env. Engineering, Dept. of Civil & Env. Engineering, University of Maryland, College Park, University of Maryland, College Park, Maryland Maryland District of Columbia Water and Sewer District of Columbia Water and Sewer Authority, Washington DC Authority, Washington DC 13 November 2009 13 November 2009
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Chalida U-tapao Steven A. Gabriel, Christopher Peot and Mark Ramirez
Identification of optimal strategies for energy management and reducing carbon dioxide emission at the Blue Plains Advanced Wastewater Treatment Plant (AWTP). Chalida U-tapao Steven A. Gabriel, Christopher Peot and Mark Ramirez - PowerPoint PPT Presentation
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Identification of optimal strategies for energy management and reducing carbon dioxide emission at
the Blue Plains Advanced Wastewater Treatment Plant (AWTP)
Chalida U-tapao Chalida U-tapao Steven A. Gabriel, Christopher Peot and Mark RamirezSteven A. Gabriel, Christopher Peot and Mark Ramirez
Dept. of Civil & Env. Engineering, University of Maryland, Dept. of Civil & Env. Engineering, University of Maryland, College Park, MarylandCollege Park, Maryland
District of Columbia Water and Sewer Authority, Washington DCDistrict of Columbia Water and Sewer Authority, Washington DC13 November 200913 November 2009
• Imports fill the gap between U.S. energy use and production• Petroleum is the major imported fuel
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U.S. Energy Consumption by Energy Source, 2008
(Source: EIA, Renewable Energy Consumption and Electricity 2008 Statistics)
Pretoleum, 37%
Coal, 23%
Natural gas, 24%Nuclear Electric
Power, 9%
Renewable Energy, 7%
Wind7%
Geothermal5%
Hydropower34%
Biomass53%
Solar1%
• More renewable energy will decrease imported petroleum, coal and natural gas
• Many renewable energy sources can be selected
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Wastewater Treatment Process
(Source: DC Water and Sewer Authority)
• Contaminated substances are separated in solid form
• Almost all solids are biomass
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Biosolids is a Significant Renewable Energy Source
(Source: DC Water and Sewer Authority)
• Biosolids is biomass that is renewable energy source
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A Huge Plant Such as The Blue Plains AWTP Has Great Potential to Produce Renewable Energy
(Source: DC Water and Sewer Authority)
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Objectives of this research
• Find optimal strategies for energy management • Use energy sources that can reduce the carbon footprint at the Blue Plains AWTP
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SEWAGE
WASA Operations
BiosolidsBiogas
Land application
Electricity
Use at WASA
Outside sales
Investment $
Other clean energywind, solar, etc
Outside salestransp.indust.
Operations/Investments
IdigesterIwind
Isolar
PB 1-PB
PE,W
1- PE,W
electric power grid/market
Flowchart
PB=% of sewage to be converted to biosolids
PE,W=% of power from methane to be used at WASA
PG,W=% of methane to be used at WASA
PG,W
natural gas grid/market
Methane
Use at WASA
carbon allowance market
$$
$IWASA
1-PG,W
10
330 MGD
GHG (CO2)
GHG (CO2)
Biosolids
1,163 tons/day
GHG
(CO2 CH4 ,N2O)
Odor
736,087 kWH/day
The Blue Plains AWTP operating process
(Source: Gabriel, S.A., et al., Statistical Modeling to Forecast Odor Levels of Biosolids Applied to Reuse Sites. Journal of Environmental Engineering, 2006).
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The Average Amount of Biosolids Per Day for the Blue Plains AWTP