74071530
Jun 18, 1990
Sep 8, 1992
system for the treatment of waste water; namely, a submerged trickling filter assembly including a filter, consisting of a false floor fitted with slotted nozzles and supporting a volume of media having granules of predetermined size in relation to the liquid to be treated, and a piping network having through-bores of predefined dimensions being submerged in the media to supply the process air
Environmental Control Apparatus