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− | [[Image:Ceramic_filter_icon.png|right]] | + | #REDIRECT [[Ceramic pot filter]] |
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− | A new alternative to conventional ceramic candle filters is the CSP filter. This model has a pot-shaped ceramic filtering element that is treated with colloidal silver. It has a bigger capacity and is easier to produce locally than candle filters. Also leakages are easier to detect than in candle filters so there is less risk in use.
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− | Evaluations indicate that CSP filters remove turbidity and harmful bacteria that cause diarrhoea, cholera and other waterborne diseases.
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− | [[Image:Ceramic_filter.PNG|thumb|right|150px|Family using a CSP filter in Zapatera, Nicaragua.]]
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− | {| border="1" cellpadding="5" cellspacing="0" align="center"
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− | ! width="50%" style="background:#efefef;" | Advantages
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− | ! style="background:#ffdead;" | Disadvantages
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− | | valign="top" | Bigger capacity, easier to produce locally and safer than candle filters.<br>
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− | | valign="top" |<br>
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− | == Capacity ==
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− | 10-20 litres/day. If filled twice a day the filter produces enough for a family of six.
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− | == Maintenance ==
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− | Cleaning with a brush and changing the ceramic element every 2-3 years.
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− | == Costs ==
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− | Complete filter (off-factory): US$ 8 in Cambodia US$ 10-15 in Nicaragua.
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− | Field studies have shown that investment in a filter is "paid back" within 3 to 6 months because of savings on expenses for medicines, fuel wood and labour.
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− | == Applying conditions ==
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− | <ul>
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− | <li><b>Cost of introduction:</b> US$ 15,000 - 30,000 for project incl. training, machinery and a first production of 500 filters. US$ 50,000 - 100,000 for project incl. production shop, training, first promotion, and 5,000 filters</li>
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− | </ul>
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− | == Examples and initiatives ==
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− | 150,000 filters are used in Central America, Asia and Africa.
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− | CARE, UNICEF, Red Cross amongst others use the filter.
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− | In Nicaragua, Guatemala and Cambodia the production of this filter is a commercial activity and production is starting up in six other countries.
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− | == Production manual ==
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− | [http://s189535770.onlinehome.us/pottersforpeace/?page_id=125 s189535770.onlinehome.us/pottersforpeace/?page_id=125]
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− | == External links ==
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− | [http://www.who.org www.who.org ]
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− | [http://www.potpaz.org www.potpaz.org ]
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− | [http://www.elfiltron.com www.elfiltron.com]
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