Influence of algal organic matter on properties of flocs formed during coagulation/flocculation in water treatment

The project focuses on the influence of algal organic matter (AOM) composition, concentration and structure on properties of flocs (size, size distribution, shape, density etc.) formed under different hydrodynamics conditions (different global shear rate and time of mixing) in drinking water treatment. The role of hydrodynamic conditions as well as mechanisms and interactions taking part in coagulation/flocculation of AOM will be described through experiments with AOM produced by selected cyanobacteria. Colloidal models will be used to describe the intensity of interactions leading to formation of aggregates, using experimentally determined physico-chemical properties of interacting surfaces as input data. The significance of this project lies in the improvement of theoretical knowledge of coagulation/flocculation process of AOM and elucidation of their influence on properties of formed flocs with respect to their separation by sedimentation, filtration etc. The project results will serve for optimization of coagulation/flocculation processes in water treatment practice.

The goal of the project

Research on the influence of algal organic matter (AOM) composition, concentration and structure on the size, shape and structure of flocs formed under different hydrodynamic conditions in drinking water treatment by coagulation and flocculation.