WATER SUPPLY – FINAL PRESENTATION
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Transcript of WATER SUPPLY – FINAL PRESENTATION
WATER SUPPLY – FINAL PRESENTATIONAmelia Quilon, Laura Reisenauer, Rayvion Sanford, Sarah Watzman
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
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.
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!
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?
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
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.
Questions?
Appendix
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.
Biogas Production Data
Manure Procured Analysis
Installation Volume Analysis
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
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
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)
Biodigester – Chamber Dimensions
Biodigester – Gas Pipe Dimensions