Process for the preparation of a substantially homogeneous lime water solution

A process for the preparation of a substantially homogeneous lime water solution intended for use in the purification of waste water and like liquids, the starting material for the homogeneous lime water solution consisting of a lime suspension, comprising introducing the lime suspension at the bottom of a compartment in which it is caused to rise in order to leave at the top thereof, said lime suspension during its upward flow being caused to pass lamellas which create a sludge zone at their lower end in the compartment, in which zone the rising lime suspension is filtered, while said lamellas create at their upper end in the compartment a clarification zone in which fine particles are separated.