Method for inhibiting growth of bacteria or sterilizing around separating membrane
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United States of America Patent
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Oct 22, 2002
Grant Date -
N/A
app pub date -
Mar 20, 2000
filing date -
Jul 21, 1998
priority date (Note) -
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Abstract
In the invention, the pipe lines around permselective membranes and the surfaces of permselective membranes are intermittently disinfected by adding an inexpensive acid such as sulfuric acid or the like to pre-treated crude water so as to make the water have a pH of 4 or lower. Accordingly, the invention provides a method of surely disinfecting the permselective membranes in membrane separation systems.
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