1. Water Chlorinator ENGR 493, Fall 2012 David Blyton, Kelly Helfrich, Brittany LaBadie, Marc Lubenetski

2. Need for Clean Water

3. Big Picture Problem: Every year there are millions of deaths resulting from contaminated drinking water Our goal: Is to make a simple cost effective water purification device that can be operated by a common person in Senegal.

4. Previous Group Summary Ineffective Unsafe

5. Review of Purification Options  Chlorine generation  Carbon filtration  Bleach

6. Original Design Flaws  Size  Cost  Power supply 500 gal 80 gal

7. Modified Design  Scaled design down  Gravity filtration  Switched out rotor for drill  Supports replace underground aspect

8. Benefits of Modified Design  Small scale  easier to ship to Africa  Drill  eliminates rotor  Cost decrease  Power decrease  Gravity Filtration  eliminates pump  Large cost cut  Power decrease  Above ground  little installation required

9. Final Design - Background  Bernolli’s Principle  Flow restriction increases velocity of water.  Increased velocity creates pressure gradient  Pressure difference causes bleach to be sucked into tube

10. Final Design - Compartments Orifice Plate Bleach system

11. Final Design - Calibrations  Flow rate of Chlorine dependent on ball valve  Assumed flow of water to be 3 gal/min, which is standard for US faucet  Since bleach is filtered, does not need to be exact

12. Prototype We Built Chlorine Mixing Pipe  Cost around $60  Effectiveness  Practicality  Bleach Storage Filtration Tank Cost~ $30 How its used Flow Rate Problem

13. Prototype in Action  The Bleach is being sucked up through the pipe by the application of Bernoulli's Principle

14. Prognosis and Further Testing  Attach a pump to our filtration System  Create an instruction manual for use  Make a video of operation  Further calibrations to our final design i.e. (Proper bleach feed and mixing)  Testing the pH of the final solution  Find the flow rate

15. Conclusion  What we were given  A solar chlorine generator  Used Electrolysis  Complicated System  Impractical  What we ended up with  Water Chlorinator  Efficient System  Using Bleach as a purifier  Can be easily manufactured/ Installed

16. Questions?