fe-based technologies for better few nexusenergy coal mining power production o&g production...
TRANSCRIPT
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Innovative Fe-based technologies for Improving Food-Energy-Water Nexus
Efficiencies in Coal Producing Regions
Lance LinCivil and Environmental Engineering
West Virginia [email protected]
304-293-9935
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Water Resource Utilizations: Status Quo
• Uses in piecemeal and linear fashion
• Inefficient resource utilization
• A plethora of issues
• Competitive water uses• Elevated TDS• Eutrophication/hypoxia• Stream acidification• ...
WaterDrinking
water Water Resources
Water uses
Wastewater treatment
Food
Dairy
cropproduction
Treatment or BMP
Energy
Coal mining
Powerproduction
O&Gproduction
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Started with AMD…
138 AMD sludge cells in Maryland, Pennsylvania, Ohio, and West Virginia (data from Ziemkiewicz)
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Energy
Coal mining Power
production
O&Gproduction
WaterDrinking
water Water Resources
Water uses
Fe-dosedwastewater treatment
Food
Dairy
cropproduction
Treatment or BMP
Improve resource utilization thru technology innovation
Managed reservoir & ecological processes
Fe/Alfacility
AMD
Fe
Fe Fe/Al
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AMDSelective
extraction of Fe and Al
Product protocols
Products•Coated sorbents•FeCl3, Al2(SO4)3
Final treatment for discharge
Fe and Al products from AMD
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Products
• QA/QC
‐ Product purity‐ SEM‐EDS analysis‐ Leaching test
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Applications
1. Drinking water treatment
2. P removal from nutrient-laden runoff
and wastewater
3. Innovative Fe-dosed
wastewater treatment
technology
4. Food production
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Application: Drinking Water Treatment
• Drinking water treatmentCoagulation/flocculation
FeCl3 or Al2(SO4)3
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Application: P removalNutrient‐laden runoff, wastewater, etc.
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Enough AMD Fe for P removal using coated sands in WV?
AMD flow = 170 MG/day = 642.6 x 106 L/day Total iron load = 6644 – 9.7x105 lbs/day (Fe concentration = 4.7‐689 mg/L)
Fe coated sorbent: ~0.2 lbs PO4/lb Fe
~9.5 mg Fe/g sand
Total PO4 removal capacity = ~1,330 – 2x105 lbs/day
Total PO4 load = 6.3x106 lbs/day(from 225 NPDES facilities)<<
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Application:Innovative Fe-dosed Wastewater Treatment
• Energy efficient (50‐75% electricity saving)
• Excellent P removal
• Reduced GHG emission
• Low biological sludge yield
• Heavy metal removal
• Utilization of Fe‐containing wastes
Ahmed and Lin (2017)
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Typical Wastewater Treatment Process
V. G. Gude (2015) Energy and water autarky of wastewater treatment and power generation systems, 45, 52‐68, Renewable and Sustainable Energy Reviews
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Wonder of Microbial World
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Fe-dosed WW treatment
• Continuous wastewater treatment with 7 sludge recycling events
• Sludge oxidation and recycling enhance bioreactor performance
Deng and Lin (2017)
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Other potential applications• Nutrient management for crop production‐ phosphorus retention‐ reduced phosphorus loads
• Aquaculture/hydroponics applications
• Storm water management/rain garden
• Decentralized wastewater treatment‐ Filter‐bed amendment‐ Septic tanks
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Nutrient management for crop production using Fe-coated sand
• Fe‐bounded PO4 bioavailable to tomato plants?
• Three treatments:
1. Plain sand with a complete fertilizer
2. PO4 saturated coated sand with a PO4‐free fertilizer
3. Plain sand with no fertilizer.
• Leachate from pots was monitored for PO4, Fe and Al.
N. Waterland (Davis College)
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Preliminary Results
Plain sand watered with DI water
PO4 saturated coated sand with PO4‐free fertilizer
Plain sand receiving complete fertilizer
Extremely dwarfed
Slightly smaller than those grown on the complete fertilizer and exhibited minor symptoms of PO4deficiency
Beginning to flower while the ones on coated sand were not
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Acknowledgement
• NSF/EPSCoR/AFI• DOE• WVDEP
• Group members:Karen Buzby, Hoil Park, Dongyang Deng, Musfique Ahmed, Rifat Anwar, Alex Panaccione, Alex Rubenstein, Casey Dolan, Nicole Hegele, Oliver Lin, Elbert Rohrbough