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Slow sand filter

23 bytes removed, 02:19, 2 October 2013

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These costs assume the lifetime is 15 years with daily production of 2.750 litres; O&M and salary included; salary is based on 1 working day of operator, assuming an average gross annual income of € 500 in developing countries.

===Field experiences===

[[Image:Jal-TARA filter.jpg|thumb|right|200px| Jal-TARA filter]]

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