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EWB E-conference 2011


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Water and Sanitation

United Kingdom
As I said, I'm no expert but do tend to accept advice from primary sources.
If they tell me that the sun can sterilise waterand is used by thousands of people, I believe it
Have a look at
http://solarcooking.org/sunandwater.htm





Graham,

In response to your question about sterilisation boiling is often used as it is difficult to know when something has reached 82 deg C but certainly, as for milk pasteurisation kills the bacteria which will cause stomach upsets and diarrhoea. Most bacteria is de-naturised at around 40 deg C, however some of the nastier more resilient strains can survive to higher temperatures. However in water where there is severe degrees of flocculation, bacteria trapped inside floccs may survive to higher temperatures.

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