filter bed

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filter bed

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

filter bed

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

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Noun

filter bed - filter consisting of a layer of sand or gravel for filtering water

filter - device that removes something from whatever passes through it

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bacteria bed filter			The presence of high oxygen content in the filter bed is necessary for bacteria to remove sewage pollutants. Recirculating vertical flow constructed wetland: green alternative to ... by Garcia-Perez, Alfredo; Harrison, Mark; Grant, Bill / Journal of Environmental Health Consists of two filter beds of carbon molecular sieve. Compact nitrogen generators by Circuits Assembly A raised pond fully planted which in turn falls to a lower fish pool is ideal if you have the space, this header pool will act as a superb natural filter bed. SPRING INTO ACTION THIS EASTER! by Coventry Evening Telegraph (England)			filmic Filminess filming filmmake filmmaker filmmaking filmography Films filmset filmsetting filmstrip filmy filmy fern filo filo pastry Filofax Filoplumaceous filoplume filose filoselle Filoviridae filovirus fils filter filter back filter bed filter cake filter coffee filter feeder filter feeding Filter gallery filter in filter lane filter light filter out filter paper filter press filter pump filter through filter tip filter-tipped filter-tipped cigarette filterable filterable virus filtering Filtering paper filth Filth disease Filthily filthiness filthy			FILTD FILTEA filter filter filter filter filter filter filter Filter (air) Filter (air) Filter (chemistry) Filter (chemistry) Filter (chemistry) Filter (chemistry) Filter (oil) Filter (oil) Filter (optics) Filter (photography) Filter (water) Filter (water) Filter (water) filter aid Filter and Hold filter back Filter Backwash Recycling Rule Filter Backwash Water Filter Bank Cascade filter base filter bauxite filter bed filter beds filter beds filter block Filter cake Filter cake filter cakes filter cakes Filter capacitor Filter Center Filter Center Filter Change Handbook filter choke filter cloth Filter coffee Filter Control Card filter crystal Filter Debris Analysis Filter Demineralizer Filter design Filter Device Object Filter Diagonalization Method Filter Difference Spectrometer filter discrimination Filter driver Filter effect Filter factor Filter Factory Filter Factory Programming Guide

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