Household Water Treatment and Safe Storage Factsheet: Source ...
Household Water Treatment and Safe Storage Factsheet: Source ...
Household Water Treatment and Safe Storage Factsheet: Source ...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
<strong>Household</strong> <strong>Water</strong> <strong>Treatment</strong> <strong>and</strong> <strong>Safe</strong> <strong>Storage</strong><br />
<strong>Factsheet</strong>: Ultraviolet (UV) Disinfection Key Data<br />
<br />
<br />
<br />
Various tubing connectors, valves <strong>and</strong> taps<br />
Electrical wires <strong>and</strong> connectors<br />
Miscellaneous tools for construction <strong>and</strong> installation<br />
Fabrication Facilities:<br />
Workshop space for construction of UV units<br />
Labour:<br />
Skilled workers with basic construction <strong>and</strong> electrical expertise can be taught to manufacture<br />
UV units<br />
Hazards:<br />
<strong>Water</strong> <strong>and</strong> electricity in combination are potentially dangerous<br />
Necessary safety precautions should be taken both during manufacture <strong>and</strong> in the home<br />
Precautions should be taken to prevent the UV bulb <strong>and</strong> electrical components from getting<br />
wet if it is not enclosed with a protective quartz sleeve<br />
Maintenance<br />
<br />
<br />
Clean the bulb if it gets dirty (frequency depends on source water quality)<br />
Replace the bulb every 12 months<br />
Direct Cost<br />
Capital Cost Operating Cost Replacement Cost<br />
US$60-150 Depends on cost of electricity US$10-25/year 1<br />
Note: Program, transportation <strong>and</strong> education costs are not included. Costs will vary depending on location.<br />
1 UV bulbs need to be replaced every 12 months, bulb price varies<br />
References<br />
Cohn, A. (2002). The UV Tube as an Appropriate <strong>Water</strong> Disinfection Technology: An Assessment<br />
of Technical Performance <strong>and</strong> Potential for Dissemination. Masters Project for Energy <strong>and</strong><br />
Resource Group, University of California, Berkeley.<br />
Lang, M., Kaser, F., Reygadas, F., Nelson, K., <strong>and</strong> D. Kammen (2006). Meeting the Need for<br />
<strong>Safe</strong> Drinking <strong>Water</strong> in Rural Mexico through Point-of-Use <strong>Treatment</strong>. Center for Latin American<br />
Studies. University of California, Berkeley.<br />
Gadgil, A., Greene, D., Drescher, A., Miller, P. <strong>and</strong> N. Kibata (1998). Low Cost UV Disinfection<br />
System For Developing Countries: Field Tests In South Africa. <strong>Water</strong> Health International, Napa,<br />
CA, USA.<br />
Further Information<br />
University of California Berkeley: http://uvtube.berkeley.edu/home<br />
<strong>Water</strong>Health International: http://waterhealth.com<br />
CAWST (Centre for Affordable <strong>Water</strong> <strong>and</strong> Sanitation Technology)<br />
Calgary, Alberta, Canada<br />
Website: www.cawst.org, Email: cawst@cawst.org<br />
Last Update: June 2011
Change language