Evolution of Floatation Equipment for Sewage Treatment аnd Active Sludge Thickening

Abstract

The article covers theoretical basics of floatation process and main stages of flotators’ evolution. special attention is paid to flotation as multistage process as well as to definition of constants with theoretical and the experimental methods. Authors demonstrate that use of theoretical bases of multistage flotation model allows to significantly stimulating floatation process. Leading foreign and domestic innovations in floatation sewage treatment and active sludge thickening are presented. Promising research in constructing multi-tool floatation apparatus (flotation combine) is described. The article provides variants of multi-tool flotators’ design, examples of its integration into operation, and the test data confirming its high effectiveness for sewage treatment and active sludge thickening. Methods of stimulating thickening with carbon dioxide and chemical agents are used for wastewater sludge (including active sludge).