Decanting apparatus and method
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United States of America Patent
Stats
-
Nov 28, 1989
Grant Date -
N/A
app pub date -
Aug 22, 1988
filing date -
Aug 22, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A solids excluding subsurface fixed liquid decanter is used primarily to decant the settled liquid above the decanter. The decanter has no moving parts and will discharge this liquid at a constant flow rate regardless of the liquid head pressure above the decanter over the time of decant. The decanter is designed to exclude solids and liquid from entering the confines of the device during the fill and mixing cycles of an SBR waste treatment process. During the aeration cycle, air is directed into a bell or hood of the decanter to replace any absorption or leakage in vent piping of the decanter. The decanter also has a mechanism for skimming the surface of the liquid volume for removing floating solids that are undesirable to the process.
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