Changes

Rapid sand / gravity filtration

146 bytes added, 03:57, 25 July 2012

→‎Suitable conditions

Common Applications: Most commonly used type of filter for surface water treatment.

  {| border="1" cellpadding=Suitable conditions"5" cellspacing="0" align="center"{{procontable | pro-! width="50%" style="background:#efefef;" | Advantages! style="background:#ffdead;" | Disadvantages|-| valign="top" | - Relatively small and compact. <br>| convalign= "top" | - Requires chemical pretreatment. Doesn't remove pathogens as well as slow sand filters. <br>}|}

==Construction, operations and maintenance==

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