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filter bed
(redirected from filter beds)

   Also found in: Dictionary/thesaurus 0.01 sec.
filter bed [′fil·tər ‚bed]
(civil engineering)
A fill of pervious soil that provides a site for a septic field.
(engineering)
A contact bed used for filtering purposes.

filter bed
A bed of gravel, sand, or the like used to filter water or sewage; also see sand filter.


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Consists of two filter beds of carbon molecular sieve.
The water supply that year - derived from three springs on the high moorland surrounding the township - was described as "satisfactory in amount" but tests had shown that there appeared to be some contamination between the collecting reservoirs and the filter beds.
Today, as Yorkshire Water's asset delivery manager Simon Gibby points out on a tour of the filter beds, byproducts include ash for builders' breeze blocks, electric power (from methane and a sewage-powered turbine) and the city's latest pride and joy - recycled sludge.
 
 
 
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