RO Concentrate Softening through Induced Crystallization in a Fluidized Bed Reactor

Abstract

Induced crystallization technique was adopted in a fluidized bed reactor to remove scale-forming ions from RO concentrate in this paper, the result of which is as follows: the effluent of the fluidized bed reactor reached stability in two minutes after the operation started; the optimized consumption ratio of softener was 1, under the circumstances of which the removal rate of Ca2+ was 89.22% the removal of Ca2+ was mainly completed at the position 20 centimeters above the bottom of the bed; the reflux rate had no influence on the removal of Ca2+, but it had influence on the turbidity of effluent.