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Screens and straining

147 bytes added, 19:10, 17 November 2016
Acknowledgements
===Suitable conditions===
Drinking water, domestic use, and small-scale productive use. More often screens are used for small communities or schools (households use [[Straining (fabric or micro)|other methods]]). The source best used for screens is surface water (not rainwater or groundwater).
===Construction, operations and maintenance===
Requires no specific social campaign as the method is widespread and is not applied directly at household level. Screening only removes larger particles (turbidity solids), therefore it cannot guarantee safe water quality. The must be applied in combination with other treatment processes.
[[File:river screens.png|thumb|none|500px450px|Screens used to strain river water. Drawing: [http://www.samsamwater.com/library/TP40_11_Surface_water.pdf Surface Water Intake and Small Dams.]]]
===Costs===
* [http://www.lenntech.com/library/clarification/clarification/screening.htm Screening]. Lenntech.
* [http://www.veoliawaterstveoliawatertech.com/news-mediaen/files/screening-straining.htm Screening and straining]. Veolia Water].
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