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Environmental Stewardship through Recovering Resources from - - PowerPoint PPT Presentation
Environmental Stewardship through Recovering Resources from - - PowerPoint PPT Presentation
Environmental Stewardship through Recovering Resources from Wastewater Kevin Orner July 29, 2017 Overview About Me Introduction Current Research Future Research Conclusion Overview About Me Introduction
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Overview
▪ About Me ▪ Introduction ▪ Current Research ▪ Future Research ▪ Conclusion
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About Me
Madison, WI 2004-2008, 2011-2014 Tampa, FL 2008-2009, 2014-present
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About Me
Panama 2009-2011 Costa Rica 2018
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Overview
▪ About Me ▪ Introduction ▪ Current Research ▪ Future Research ▪ Conclusion
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Where does it go?
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What’s in wastewater?
Stuff includes…
- Feces
- Pathogens
- Nutrients
- Cleaning products
- Medications
- Kitchen waste
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Why is wastewater a problem?
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Sanitation looks different in other places
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Sanitation looks different in other places
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Introduction
Sustainable Development Goals
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Introduction
2.4 billion still lack access to sanitation 280,000 diarrheal deaths occur annually from inadequate sanitation 35% reduction in diarrheal deaths with improved sanitation
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Introduction
Old paradigm: Removal Wastewater as waste NEW paradigm: Recovery Wastewater as resource N: Nutrients E: Energy W: Water
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Introduction
Creation Care: Genesis 2:15: To serve and to protect Psalm 19:1: The sky above proclaims his handiwork Take what was considered a waste, with no value, and see its purpose
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Overview
▪ About Me ▪ Introduction ▪ Current Research
▪ Urban ▪ Rural
▪ Future Research ▪ Conclusion
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Current Research-Urban
Nutrient Management In a Sewershed Building = Urine Community = Sewer Mining City = Anaerobic Digestion, Struvite Precipitation
(Orner et al., Environmental Engineering Science, 2017)
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Current Research-Urban
(Orner et al., Environmental Engineering Science, 2017)
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Current Research-Urban
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Current Research-Urban
Struvite Precipitation MgNH4PO4 Recovers ~90% P, ~20% N What to do with remaining N?
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Current Research-Urban
Microbial Fuel Cells entered our field about 10-15 years ago Bacteria mediate oxidation-reduction reactions, therefore electrons are being transferred
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Supernatant from anaerobic digestion: “Digestate”
- High concentrations of N,
P
- Usually recycled back into
the main treatment stream “Sidestream”
Microbial Fuel Cell
Overall Objective: Build and assess the performance of a microbial fuel cell that both removes ammonium and provides energy.
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Microbial Fuel Cell Setup
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Microbial Fuel Cell Setup
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Data Collection
Ammonium and phosphate recovery during struvite precipitation.
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Data Collection
Total Nitrogen Recovery and Removal (mg/L TN) in struvite reactor influent, struvite reactor effluent, nitrification effluent, and cathodic effluent.
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Overview
▪ About Me ▪ Introduction ▪ Current Research
▪ Urban ▪ Rural
▪ Future Research ▪ Conclusion
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Current Research-Rural
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Data Collection
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Overview
▪ About Me ▪ Introduction ▪ Current Research ▪ Future Research ▪ Conclusion
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Future Research
Stage 1: Laboratory Setup Analyze Microbial Community Stage 2: Demonstration at Hillsborough County Northwest Facility
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Future Research
Stage 3: Fulbright Research Grant to Costa Rica
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Overview
▪ About Me ▪ Introduction ▪ Current Research ▪ Future Research ▪ Conclusion
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