Energy Recovery Potential from Wastewater Utilities ... · biogas for energy recovery •...
Transcript of Energy Recovery Potential from Wastewater Utilities ... · biogas for energy recovery •...
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Energy Recovery Potential from Wastewater Utilities through Innovation Conversion Technologies III: Energy from
Our Waste—Will we Be Rich in Fuel or Knee Deep in Trash by 2025? July 30, 2014
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Who WERF is • Manage peer-
reviewed research lifecycle to deliver timely, actionable results.
• 35-40 reports published annually that are housed in a online, searchable database.
• Serve as a research hub for the water quality community; utilities, policy makers, consultants, universities and industry.
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WERF Research
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• WERF’s 300+ Subscribers:
– Public Utilities
– Industry
– Engineering & Consulting Firms
– Equipment Manufacturers
– State Regulators
• Partnerships and collaborations
• Federal Funding
For every dollar invested, WERF creates four dollars by leveraging matching and in-kind support.
Research Funding Sources
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Bottom Line: Major Paradigm Shift
PAST: collect wastewater, move it quickly downstream, treat it to acceptable standards, and dispose of waste without harming the environment.
FUTURE: manage resources to generate value for the utility and its customers, improve environmental quality at least cost to the community, and contribute to the local economy ENERGY RECOVERY!!!
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Water Resource Recovery Facility
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What is the potential to recover energy from the
wastewater sector?
• There is more energy in wastewater than is needed for treatment – about 5X more
• Total primary energy potential is 851 trillion BTU/year.
7
Thermal
Chemical
Hydraulic
80%
20%
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Energy Balance and Recovery from Domestic
Wastewater Sources
8
113 billion ft3/year
or
67.8 trillion BTUs/year
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Next Steps and Energy Recovery
Research Needs
• Maximize carbon management for energy recovery or reuse.
• Further enhance Anaerobic Digestion to produce more biogas for energy recovery
• Investigate the potential for heat recovery from wastewater and heat reuse opportunities.
• Develop and demonstrate efficient, cool temperature
conversion generators (Organic Rankine or Stirling) from recovered heat to power.
• Further short-cut nitrogen treatment process development and implementation as low energy alternative treatment process.
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Co-Digestion of Organic Wastes w/WW Solids
Research Objectives
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• Organic waste characterization
• Organic waste compatibility
• Operating parameters for reliable digestion operation
• Organic loading rates
• Codigestion economics
Bench: Waste
Characterization
and Biogas
Production
Pilot: Organic
Loading Rate
ENHANCE BIOGAS PRODUCTION
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Change the Economics of Siloxane
Removal o Better adsorption
media performance
o Proper operation conditions (moisture removal)
o Cost-effective removal options.
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LIFT Focus Areas
Shortcut Nitrogen Removal
P-Recovery
Digestion Enhancements
Biosolids to Energy
Energy from Wastewater
Collection Systems
Green Infrastructure
New
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WERF Peer Review: Bay Area Biosolids to Energy (BAB2E)
Coalition Demos: • Concord Blue
• Chemergy • BioForce Tech
(site visit only)
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LIFT Website: werf.org/lift