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Membrane ultra-filtration unit
Ultra-filtration plants can be constructed by employing hollow fiber membranes or spiral wound membranes.They work with a pressure of about 1-10 bar and they are suitable to separate big molecules present in water, but not only that.
Ultra-filtration process:
separate oils, bacteria, macromolecules like proteins for example.
most of surface-actives will let go through, along with inorganic acids and alcaline compound
pores dimension is about 0.005 – 0.1 micron; 1KD – 500 KD
Permeate coming from an ultrafiltration system is a limpid solution completely free of suspended solids.
In the field of ultra-filtration does exist a great variety of membranes along with the possibility to construct single or double passage systems, with recycle or not, etc. This means that there is a wide range of opportunities that will suit the client's requests.
Also working pressure can be modified in function of the client needs and of the kind of solution to be treated.
In civil application, ultra-filtration system is employed to reduce the presence of micro-bacteria.