biofiltern.
/ˈbʌɪəʊˌfɪltə/, U.S. /ˈbaɪoʊˌfɪltər/ A filter or filtration device used for biofiltration.
ΘΚΠ
the world > physical sensation > cleanness and dirtiness > freedom from impurities > removal of impurities > filtering or percolating > [noun] > filter or percolator > others
filter bed1828
physeter1842
sack-filter1875
biofilter1936
permeator1975
1936 H. N. Jenks in Engin. News-Record May 721/3 The design of the bio-filter is similar to that of the trickling filter, and involves the use of a rotary distributor, or a system of low-head spray nozzles for the continuous application of the recirculated flow.
1975 Proc. Joint Convent. Sugar Technol. Assoc. India 5 g72 The ammonified effluent can be further treated in oxidation ponds or in biofilters.
2002 P. Raines Simple Stonescaping (2003) xiv. 118/1 Different fish have different requirements—they may need bio-filters and perhaps a cooling tower for a properly balanced habitat.
This is a new entry (OED Third Edition, November 2010; most recently modified version published online December 2021).
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n.1936