Changes

Upflow roughing filter

232 bytes added, 21:44, 18 September 2012

→‎Suitable conditions

==Suitable conditions==

'''Use''': As a pre-treatment stage prior to slow sand filtering or other purification processes.

 

 

[[Image:roughing filter chart.jpg|thumb|center|500px|Filter Classification. Chart: [http://www.greenstone.org/greenstone3/nzdl?a=d&c=hdl&d=HASH01ccfcc122c3ed3492c9f50c.6.1&sib=1&p.a=b&p.sa=&p.s=ClassifierBrowse&p.c=hdl SANDEC.]]]

==Construction, operations and maintenance==

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