1. Jessie Holderman Beth Madsen Adam Oster

2. Agenda Project learning Specifications Axiomatic design Comparisons Proposed designs Questions Source: http://www.wallingfordvt.com/planning_&_zoning.htm

3. http://seniordesign.engr.uidaho.edu/first_semester/process.html

4. Project Learning Toured Blue Water’s facilities Interviewed operator Talked with external wastewater plant engineer Observed/Analyzed current loading procedure Research on media transport systems Source: http://www.smart-kit.com/scategory/study-skills/

5. Opportunity Statement Develop an easy to use, safe, cost-effective method to charge the pilot filters. Problem Statement A problem in the current loading process of the pilot filters is creating a safety hazard to workers, costing Blue Water excessive money, and time.

6. Current loading procedure Sand arrives on-site, on trailer Sand is moved next to the filter Filter is primed with water. Operator loads sand into top of filter. Forklift/Crane lifts operator and sand Operator climbs ladder with buckets of sand

7. Specifications

8. Axiomatic Design Axiomatic design is a process used to create functional requirements from customer needs, develop these into design parameters, and then determine process variables.

9. Vertical Screw Pros Cons Will move the sand to the height needed Can move sand at 300 SCFM Cost- $15,000 for a carbon steel vertical screw Difficult to set up and move Can be a safety issue High maintenance cost Requires a large space to operate Source: http://www.martinsprocket.com

10. Air lift Pros Cons Safe to operate Light weight Cost effective Low maintenance Blue Water uses technology System requires that the lift be 50% submerged Transfer rate is slower than desired Must be close to filter

11. Venturi System http://www.penberthy-online.com/literature/jets/DIM%20-%201701.pdf

12. Venturi System Pros Cons Material does not come into contact with moving parts Very efficient Low maintenance cost Uncomplicated design Easily removes sand from filter Need large volume of water Requires high pressure water pump

13. Positive Displacement Pump Pros Cons Low maintenance Low cost Versatile Can be air powered High flow rate Wear in hoses Sand must be in a slurry Source: http://www.process-controls.com/John_Brooks_Company/diaphragmpumps.htm

14. Dynamic pump system Pros Cons Low cost Versatile Easy to use High flow rates Wear due to slurry on moving parts Wear in hoses Sand must be in a slurry Source: http://www.heavypump.com/Productshow.asp?ArticleID=17

15. Venturi System ComponentCost Pump$600 Venturi Nozzle$100 Fittings$50 Slurry Hose$200 Fabrication Materials $50 Total$1,000 Flow rate of 6.9 gpm, with 10 gpm water needed to achieve this Estimated time to charge CF3: 44 min

16. Positive Displacement System Air–operated double diaphragm pump Flow rate over 4 gpm with heads of 30 ft Estimated time to charge CF3: 75 min ComponentPrice Pump$ 800 Slurry Hose$ 200 Fittings$ 50 Fabrication Materials $ 50 Total$ 1,100

17. Dynamic System Gas-operated impeller pump Flow rate of 158 gpm, with head of 95 ft Estimated time to charge CF3: < 2 min ComponentPrice Pump$ 500 Slurry Hose$ 200 Fittings$ 50 Fabrication Materials $ 50 Total$ 800

18. Future Work Calculate specifications for each component Find vendors and detailed costs Create fabrication drawings Fabricate components or order components Test completed system

19. Questions Source: http://www.co.sanmateo.ca.us/smc/department/dpw/home/0,,5562541_5562587,00.html