Optimization of the coagulation of water with higher concentration of aluminium

High concentration of aluminium in water reservoirs can lead to higher concetration of residual aluminium in drinking water and then it can cause some health problems. For this reason is very important to optimalise the condition of water treatment, the main problem is inadvisable type and wrong dose of the coagulant and unsuitable intensity and duration of mixing. Optimalization with aluminium sulphate and ferric sulphate was made with raw water from two drinking water reservoirs Pilská and Lázská in Czech Republi