Difference between revisions of "Ceramic Silver Pot (CSP) filter"
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| − | [[Image:Ceramic_filter_icon.png|right]] | + | [[Image:Ceramic_filter_icon.png|right|80px]] |
| − | [[Image:CSP filter.jpg|thumb|right| | + | [[Image:CSP filter.jpg|thumb|right|200px|Family using a CSP (Ceramic Silver impregnated Pot model) filter in Zapatera, Nicaragua. Photo: NWP.]] |
| − | __NOTOC__ | + | __NOTOC__ <small-title /> |
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. | 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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“A filter for family use that provides clean and bacteria-free water at a cost of US$ 3-5 per family per year” - Ron Rivera of the NGO Potters for Peace. | “A filter for family use that provides clean and bacteria-free water at a cost of US$ 3-5 per family per year” - Ron Rivera of the NGO Potters for Peace. | ||
| − | + | ===Construction, operations and maintenance=== | |
| − | = | ||
| − | |||
| − | ==Construction, operations and maintenance== | ||
Capacity: 10-20 litres/day. | Capacity: 10-20 litres/day. | ||
| − | ==Costs== | + | ===Costs=== |
Cost complete filter: | Cost complete filter: | ||
(off-factory): US$ 8 in Cambodia, US$ 10-15 in Nicaragua.<br> | (off-factory): US$ 8 in Cambodia, US$ 10-15 in Nicaragua.<br> | ||
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US$ 50,000 - 100,000 for project incl. production shop, training, first promotion, and 5,000 filters. | US$ 50,000 - 100,000 for project incl. production shop, training, first promotion, and 5,000 filters. | ||
| − | ==Field experiences== | + | ===Field experiences=== |
150,000 in Central America, Asia and Africa. | 150,000 in Central America, Asia and Africa. | ||
| − | ==Acknowledgements== | + | ===Acknowledgements=== |
* [http://www.samsamwater.com/library/Smart_Water_Solutions_-_EN.pdf SmartWater Solutions: Examples of innovative, low-cost technologies for wells, pumps, storage, irrigation and water treatment.] or ([http://docs.watsan.net/Downloaded_Files/PDF/NWP-2006-Smartwater.pdf alternative link]). Netherlands Water Partnership, 2006. | * [http://www.samsamwater.com/library/Smart_Water_Solutions_-_EN.pdf SmartWater Solutions: Examples of innovative, low-cost technologies for wells, pumps, storage, irrigation and water treatment.] or ([http://docs.watsan.net/Downloaded_Files/PDF/NWP-2006-Smartwater.pdf alternative link]). Netherlands Water Partnership, 2006. | ||
Revision as of 04:12, 2 October 2013
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.
Evaluations, including a USAID-funded test in Nicaragua, indicate that CSP filters remove turbidity and harmful bacteria that cause diarrhoea, cholera and other waterborne diseases.Maintenance consists of cleaning with a brush and changing the ceramic element every 2-3 years. If filled twice a day the filter produces enough for a family of six.
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. In Nicaragua, Guatemala and Cambodia the production of this filter is a commercial activity and production is starting up in six other countries.
“A filter for family use that provides clean and bacteria-free water at a cost of US$ 3-5 per family per year” - Ron Rivera of the NGO Potters for Peace.
Construction, operations and maintenance
Capacity: 10-20 litres/day.
Costs
Cost complete filter:
(off-factory): US$ 8 in Cambodia, US$ 10-15 in Nicaragua.
Cost of introduction: 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.
Field experiences
150,000 in Central America, Asia and Africa.
Acknowledgements
- SmartWater Solutions: Examples of innovative, low-cost technologies for wells, pumps, storage, irrigation and water treatment. or (alternative link). Netherlands Water Partnership, 2006.
