Download - WATER SUPPLY – FINAL PRESENTATION Amelia Quilon, Laura Reisenauer, Rayvion Sanford, Sarah Watzman
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WATER SUPPLY – FINAL PRESENTATIONAmelia Quilon, Laura Reisenauer, Rayvion Sanford, Sarah Watzman
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Participants
SARAH WATZMAN - aka the girl who never frowns !- Third year ME- Bio-digester lead
LAURA REISENAUER- aka the girl who rarely drinks water!- Third year Env.E- Team lead
AMELIA QUILON - aka the girl who only eats peanut butter !- Third year ISE- Tilapia lead
RAYVION SANFORD- aka the girl who severely hates bugs!- Third year Chem.E- Communication lead
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Problem
Main Problem• Scope: • MdL frequently loses electricity
that powers their lift pump and distribution pump.
• Objective: • Explore alternative energy
sources to either back-up pumps during power outages or replace grid.
• Increase water storage capacity to mitigate problems occurring when there’s no electricity.
Side Problems• Scope:• MdL has a non-functioning
biodigester.• MdL has a not fully
functional tilapia pond.
• Objective:• Find the root cause of the
biodigester’s problem.• Provide MdL a plan so that
the biodigester becomes a stable, functional piece.
• Repair the tilapia pond. • Develop a yearly schedule
for tilapia harvesting to maximize yield.
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Pre-Pre Trip Work
Generator• Requirements: 20 kW
generator needed to overcome initial in-rush.
• $20,000 for 20 kW generator
• $600 for variable frequency driver (another pricey option!)
Additional Storage Capacity
• Cost: $5,000• Feasibility: • 900 pound tank• Support issues – 13,000
pound tank when full• Diameter and dimensions
(Saul confirmed this information)
Is this even a problem? MdL had only used a water truck 2 – 3 times over
several years!
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Pre-Trip Work
Biodigester• Discoveries from last trip
– clogged, too many solids, too basic water
• Sump pump is on site• What does the
biodigester need before it can be fully operational?• Poop and H2O!
• Sustainability and training
Tilapia Pond• What has worked already
and what is currently working?• Section 1 is functional• Sections 2 and 3 are leaking
• How can MdL fully utilize the tilapia pond?• Protein source for the
children• Potential revenue
generator?
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Objectives Achieved
Biodigester• Benefit analyzed• Contents fully removed • Composting pile
“organized” and dedicated to garden
• Manure on site• Composting posters
created• Gas line replaced• Staff trained and informed
Tilapia Pond• Sections 2 and 3 drained
and cleaned• Sections 2 and 3 patched• Could not be tested for leaks
due to water issues
• Pump has been spliced so it can be used in both sections
• Animal rescue!• Business plan• Rotation Schedule
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Future Recommendations
Biodigester• Once enough manure is
obtained, initialize biodigester
• Put compost from kitchens directly into biodigester • For less confusion, only use
kitchen’s compost, not kids!
• Use existing compost pile for garden
• Gas lights by compost area
Tilapia Pond• MdL is already thinking of
re-surfacing the pond.• MdL should stagger each
section to increase the times each year they harvest.
• Use pump in middle section.
• Use spliced hose in large section.
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Questions?
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Appendix
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Biogas Production Analysis
Assumptions: • One 100lb propane tank at MdL gets used every 15 days. • One bucket of compost (approx. 10 pounds) is added to biodigester daily.• 50.3 MJ/kg = energy density of propane (Wolfram Alpha)• 53 MJ/kg = energy density of methane (hypertextbook.com/facts/2004/Billywan.shtml• 265 cubic meters/ton = biogas production from food scrapsCalculations:
Methane:
(Wikipedia)
Propane:
Energy produced from methane created from food scraps is
1/3 of the energy MdL’s propane tanks provide.
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Biogas Production Data
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Manure Procured Analysis
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Installation Volume Analysis
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Tilapia Revenue Analysis
Tilapia Production (every 6 mo.)• I tilapia = 1 pound• Section 1: 50 pounds• Section 2: 300 pounds • Section 3: 300-500 pounds (with use of pump)Harvesting Schedule• Each section: 6 months or twice a yearPrice• 1 pound of tilapia = 27 Lempira Revenue
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Tilapia Rotational Schedule
Section Jan Feb March April May June
1 Harvest! Stock Mo. 2 Mo. 3 Mo. 4 Mo. 5
2 Stock Mo. 2 Mo. 3 Mo. 4 Mo. 5 Harvest!
3 Mo. 4 Mo. 5 Harvest! Stock Mo. 2 Mo. 3
Section July Aug Sept Oct Nov Dec
1 Harvest! Stock Mo. 2 Mo. 3 Mo. 4 Mo. 5
2 Stock Mo. 2 Mo. 3 Mo. 4 Mo. 5 Harvest!
3 Mo. 4 Mo. 5 Harvest! Stock Mo. 2 Mo. 3
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Composting Posters
• Good (Bueno)• Beans (frijoles)• plantains/bananas (platano)• watermelon (sandia)• tortilla (tortilla)• lettuce (lechuga)• tomato (tomate)• pineapple (pina)• rice (arroz)
• Bad (Mal)• Eggs (huevos)• bones (huesos)• meat (carne)• egg shells (cascarde de huevo)• paper (papel)• milk (leche)• cardboard (carton)• plastic (plastico)
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Biodigester – Chamber Dimensions
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Biodigester – Gas Pipe Dimensions