Method for reducing contamination in pulp processing
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United States of America Patent
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Jul 31, 1990
Grant Date -
N/A
app pub date -
Mar 26, 1987
filing date -
Mar 26, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method and apparatus for reducing contamination in processed pulp and in white water effluent discharged from a pulp dryer or paper making mill. The system includes multiple pulp bleaching and washing stages wherein white water effluent discharge from the dryer or paper making mill is fed to the next-to-last washing stage and fresh water is supplied to the last washing stage.
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