Abstract
ABSTRACTUnit and integrated pressure-driven membrane processes were investigated in a semi-pilot scale for the purification and concentration of contaminated cleaning solutions. For the tests, liquid acidic and alkaline single-phase detergents tailor-made for CIP systems in the dairy industry were selected. The effect of the permeate recovery rate on the quality of recovered solutions was evaluated.Integrated purification processes provided a very high separation of the milk components with a slight weakening of the detergency properties of the permeate. The least effective integrated treatment option (PM5+AFC30) enabled 100% retention of proteins, and over 98% retention of low molecular weight lactose.
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