filter bed

filter bed

n.

A layer of sand or gravel on the bottom of a reservoir or tank, used to filter water or sewage.

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filter bed

n

1. (Engineering / 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

Thesaurus

Noun

1.

filter bed - filter consisting of a layer of sand or gravel for filtering water filter - device that removes something from whatever passes through it