1 / 19

Design Review

Explore the development process of an easy-to-use, safe, cost-effective method for charging pilot filters. Compare various proposed designs and specifications, aiming to improve efficiency and worker safety while minimizing costs. Future work includes vendor selection, cost analysis, and system testing.

kyran
Download Presentation

Design Review

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Design Review 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.htmlhttp://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 Problem Statement Develop an easy to use, safe, cost-effective method to charge the pilot filters. 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. Forklift/Crane lifts operator and sand Operator loads sandinto top of filter. 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 • 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

  17. Dynamic System • Gas-operated impeller pump • Flow rate of 158 gpm, with head of 95 ft • Estimated time to charge CF3: < 2 min

  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

More Related