TREATMENT DEVICE.

摘要

PCT No. PCT/GB93/01460 Sec. 371 Date Jul. 26, 1995 Sec. 102(e) Date Jul. 26, 1995 PCT Filed Jul. 13, 1993 PCT Pub. No. WO94/03254 PCT Pub. Date Feb. 17, 1994A treatment device such as a filter device, containing a treatment bed (2) of particulate treatment medium. A fluidizing unit (9) associated with the treatment medium particles, for removing the treatment medium particles from the treatment bed for rejuvenation. The fluidizing unit (9) comprises a liquid supply duct (11) having an outlet (10) and which is arranged to be fed with liquid under pressure from outside the filter bed, and a discharge duct (14) having an inlet (15) and which projects beyond the outlet (10) of the liquid supply duct.