Ultrafiltration is a purely mechanical separation process which uses special membranes of porosity less than 0,1 micron to filter molecules in water without using chemical additives.
This method is particularly suitable for industrial water treatments when it is required the separation and concentration of substances such as:
- proteins, gelatines, colloids;
- mineral and synthetic oil-based emulsions, even containing metallic ions, from wire-drawing plants, quenching baths, tank washing waters, public transport depots wastewaters;
- phosphating and electrolytic plant efﬂuents;
- agro-industrial wastewaters;
- chemical and paint industry effluents, cationic and anionic electrophoretic baths, autophoretic baths wastewaters;
- wastewaters containing polyacrylates or polyvinyl acetate in solution.
Among all water treatment systems, Reverse Osmosis is the most advanced; it allows to reduce the content of dissolved salts..
The Reverse Osmosis in applicable to the treatment of any sort of water salinity; its prerogative is to separate water from salt ions without moving them, such that occurs with other methods.