| 摘要 |
A mass transfer device for use in the treatment of an impure liquid includes a housing into which the impure liquid and a reagent are to be introduced, the housing having a side wall. The device also includes an impeller assembly, including a plurality of impeller blades, rotatably mounted in the housing, at least one impeller blade having a tip which terminates in close proximity to an interior surface of the side wall of the housing and the or each impeller blade being shaped ad dimensioned to impart shear forces, at its tip, to liquid and reagent located between the side wall and the tip and to generate a low pressure region at a trailing end of the said tip upon rotation of the blade relative to the side wall, thereby enhancing a reaction between the reagent and impurities in the liquid. The invention also relates to a method of and equipment for treating an impure liquid.
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