absorption bed

absorption bed

[əb′sȯrp·shən ‚bed]
(civil engineering)
A sizable pit containing coarse aggregate about a distribution pipe system; absorbs the effluent of a septic tank.

absorption bed

A pit of relatively large dimensions which is filled with coarse aggregate and contains a distribution pipe system; used to absorb the effluent of a septic tank.
References in periodicals archive ?
Moreover, this sytem is said to virtually eliminate VOCs from TDI and methylene chloride, as well as powder particulates, without using carbon absorption beds, In contrast, carbon-bed systems trap no more than 90% of VOCs, according to TAS.