Optimization of the coagulation process of surface water with high content of natural aluminium
2007
Tomášková, H., Academy of Sciences of the Czech Republic, Prague (Czech Republic). Institute of Hydrodynamics | Benešová, L., Charles University in Prague (Czech Republic). Faculty of Science. Institute for Environmental Studies | Pivokonský, M., Academy of Sciences of the Czech Republic, Prague (Czech Republic). Institute of Hydrodynamics
Optimization of water treatment conditions with usage of aluminium sulphate and ferric sulphate was made with raw water containing high concentrations of natural aluminium. For optimization of coagulation conditions here were used the jar tests. The efficiency of aggregation was evaluated with the help of the degree and test of aggregation. In all water samples used, the total aluminium concentration was fractionated into nine forms. The high values of degree of aggregation and high portion of macro-, micro-, and primary particles were attained in optimally treated water samples using both types of coagulants. It contrasts to the portion of non-aggregated particles ranging in optimal treated water only from 3% to 7%. Fractionation of total aluminium proved that the removal efficiency of all Al fractions is very good.
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