IMPROVEMENTS IN OR RELATING TO THE SEPARATION OF SOLIDS FROM LIQUIDS

摘要

A process for separating suspended solids from an aqueous sugar-containing liquor, such as sugar liquors, sugar syrups and sugar juices, comprises forming a primary floc in the liquor containing suspended solids by phosphatation, preferably after treatment with a cationic surfactant; aerating the liquor containing the primary floc, with agitation; distributing an organic polymeric flocculant uniformly throughout the liquid phase of the aerated liquor, to initiate the formation of a secondary floc therein; retaining the resultant mixture in a flocculator vessel with non-turbulent agitation preventing the segregation of the secondary floc from the liquor and allowing the secondary floc to grow; transferring the liquor, with minimal agitation, from the flocculator vessel to a separator vessel; allowing the secondary floc to segregate by flotation from the liquor in the separator vessel; and separately removing clarified liquor and flocculated solids from the separator vessel.