Process for filtering sludge-like materials in a filter press
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United States of America Patent
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-
Oct 19, 1982
Issued Date -
N/A
app pub date -
Aug 4, 1980
filing date -
Jun 29, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process and apparatus for the batch-wise filtering of a sludge-like material in which the discharge period of the filter press is used for filling a pressure vessel containing air with a pump being also used during this period. During the filtration period the pump can operate solely for feeding the filter press to thereby increase the filtration capacity and reduce the required filtration period. During the discharge period the pump also operates exclusively for feeding the pressure vessel to further speed up the process. The pump can operate continuously and the different steps of the process can be controlled by only opening and closing control valves.
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