A fluidizing reactor for treatment of fluid is provided. The fluidizing reactor includes an elongated column having an interior chamber extending between a first end and a second end of the column. The reactor also includes a plenum situated circumferentially about the second end of the column, and an inlet tangentially positioned relative to plenum, so as to introduce fluid to be treated into the plenum. The tangential position of the inlet imparts to the fluid a uniform cyclonic flow pattern circumferentially about the column. The reactor further includes an annulus about the second end of the column to provide an opening through which fluid from the plenum may enter into the interior chamber. Fluid flowing through the annulus is uniformly distributed into the interior chamber and maintains a cyclonic flow pattern. A fluid treatment material may be provided to treat the fluid flowing into the interior chamber.