Solid-State Microwave Modification of Flocculants for Wastewater Treatment

Abstract

Presents the results of research on the creation of effective technical preparations – flocculants based on polyacrylamide, modified by the physical action of microwaves with frequency 4.5 GHz on their solid phase. The change in the basic physical properties of the working solutions of flocculants was established (dissolution rate, shear stress values, efficiency and sedimentation rate). Mechanisms of microwave solid phase modification and features of dissolution of pretreated batches of solid polyelectrolyte fractions are proposed. On the basis of rheological studies of prepared working solutions of flocculants and test experiments on the flocculation of suspension a comparative evaluation of effectiveness of the action of microwaves on polyectrolyte during its preliminary preparation using solid phase and liquid phase modifications.