filter bed

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Related to filter beds: Slow sand filter

filter bed

n.
A layer of sand or gravel on the bottom of a reservoir or tank, used to filter water or sewage.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

filter bed

n
1. (Civil Engineering) a layer of sand or gravel in a tank or reservoir through which a liquid is passed so as to purify it. Compare bacteria bed
2. (Chemistry) any layer of material through which a liquid is passed so as to filter it
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

fil′ter bed`


n.
a pond or tank having a false bottom covered with sand and serving to filter river or pond waters.
[1870–75]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.filter bed - filter consisting of a layer of sand or gravel for filtering water
filter - device that removes something from whatever passes through it
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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High raw water turbidity (greater than 10 ntu - nephelometric turbidity unit) will create problems for rapid-sand filters as well, by frequently clogging the filter beds and producing turbid water, if filter beds are not frequently cleaned and they never will, considering the attitude of Hyderabad's civic authorities.
In this context, this study aimed to evaluate the methodology of sampling of sand from contaminated filter beds in pressurized sand filters used in irrigation, with possibility of application in the evaluation of performance in backwash processes.
Consists of two filter beds of carbon molecular sieve.
The city's engineering department planned to install a networked automation system to operate the valves that send 26 million gallons of water per day into the plant's filter beds. Engineers decided to use an Allen-Bradley PLC-5, containing a ProSoft 3100-LTQ interface module, to preside over a Limitorque DDC-100 redundant loop network.