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. The ultra filtration plants
have established a position in the drinking water sector due to the
fact that they filter water to such an extent that it is virtually free
of solids. Bacteria, parasites and viruses are not killed off, but
entirely removed from the drinking water.

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