Changes

Chulli pasteurization

344 bytes added, 04:24, 19 October 2017

no edit summary

{{Language-box|english_link= Chulli pasteurization | french_link= Coming soon | spanish_link= Coming soon | hindi_link= Coming soon | malayalam_link= Coming soon | tamil_link= Coming soon | swahili_link=coming soon | korean_link= Coming soon | chinese_link=粘土炉 巴氏杀菌 | indonesian_link= Coming soon | japanese_link= Coming soon }} [[Image:chulli_icon.png|right|80px]][[Image:chulli pasteurization.jpg|thumb|right|300px200px|Chulli pasteurization. <br>Photo: Johnston, UNICEF.]]__NOTOC__

Pasteurization is the process of disinfecting water by heat or radiation. Typical water pasteurization achieves the same effect as boiling, but at a lower temperature (usually 65-75°C), over a longer period of time.

Larger pathogens (e.g. protozoa, helminths), suspended particles (e.g. sand, silt. clay), and iron are removed through the filter. Pathogens are killed or inactivated at 65°C.

===Construction, operations and maintenance===

The source water is poured into the top of the rapid sand filter (20-25 litre container filled with clean sand). The water flows through the aluminium tubing coiled within the chulli stove, and collected in a heat resistant container. Whenever the stove is being used for cooking, the outlet tap must be open. There must also always be water in the system. This will prevent super-heating the water and tubing inside the chulli, which may cause breakage or leaks.

* Developed by Prof. Mohammad Fakhrul Islam at Rajshahi University, and has also been researched and supported by UNICEF (Bangladesh) and Wagtech International (Bangladesh).

===Acknowledgements===

* [http://appropriatetechnology.wikispaces.com/file/view/HWTS+Fact+Sheet_Simplified_Chulli+Pasteurization_Jul+09.pdf Household Water Treatment and Safe Storage Fact Sheet: Chulli Pasteurization.] CAWST, 2009.

• ← Older edit

Winona

Akvopedia-spade, akvouser, bureaucrat, emailconfirmed, staff, susana-working-group-1, susana-working-group-10, susana-working-group-11, susana-working-group-12, susana-working-group-2, susana-working-group-3, susana-working-group-4, susana-working-group-5, susana-working-group-6, susana-working-group-7, susana-working-group-8, susana-working-group-9, susana-working-group-susana-member, administrator, widget editor

30,949

edits