Dewatering of suspensions
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 8, 1998
Grant Date -
N/A
app pub date -
Apr 16, 1997
filing date -
Jun 8, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A suspension is dosed with a coagulant and then with a flocculant and is dewatered to form a thickened sludge or cake and separated liquor, and control of the dewatering performance is improved by adding the flocculant at a predetermined dosage, monitoring the charge in the separated liquor (or monitoring other dewatering parameter of the separated liquor or suspension) and adding coagulant at a dosage selected in response to the monitored charge or other parameter value in order to maintain the value substantially at a preselected optimum value.
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