sand filter

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sand filter

[′san ‚fil·tər]
(civil engineering)
A filter consisting of graded layers of sand and aggregate for purifying domestic water.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

sand filter

sand filter: plan
A bed of fine sand which is laid over graded gravel; used to remove impurities from a water supply.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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