Overhead trough with constant trough flow velocity configuration and methods of regulating trough flow velocity
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United States of America Patent
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Jul 14, 2009
Grant Date -
N/A
app pub date -
Jun 22, 2007
filing date -
Jun 22, 2007
priority date (Note) -
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Abstract
Trough sides enclosing clarified liquid to be guided, and a trough septum, promote efficient clarifier operation. A first side has a liquid outlet, a second side is spaced from and opposite to the first side, and third and fourth sides extend spaced from each other between the first and second sides. The septum extends from the first side to a termination, and extends at an angle with respect to the third and fourth sides. Septum configuration divides the trough into a flow path from the first side to and around the termination back to the first side. The path extends sequentially over clarifier orifices in one row then over clarifier orifices in a next row along a path length. A path area is regulated along the length in direct proportion to length values so the trough flow velocity is constant all along the path.
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