Lamella gravity separator
First Claim
1. In an apparatus for separation of solids suspended in a liquid, said apparatus including a tank having a lamella plate assembly located within said tank defining a plurality of parallel inclined flow passages therein, an inlet distribution means for directing liquid to be treated into said tank and upwardly through said flow passages, and an outlet trough means extending transversely with respect to said flow passages for receiving clarified liquid from said flow passages;
- an improved lamella plate assembly, comprising;
a plurality of spaced-apart inclined parallel lamella plates defining said flow passages therebetween, said lamella plates having a generally rectangular inclined settling surface and a rear surface;
each of said lamella plates having a leg portion extending substantially perpendicular to an upper end portion of said rear surface substantially along the entire width thereof, said leg portion extending between adjacent lamella plates such that the outer edges thereof contact an adjacent settling surface in closing relationship to a corresponding flow passage therebetween; and
a plurality of horizontally spaced-apart orifices extending through said lamella plates at an elevation below the elevation of said leg portions said orifices being in communication with a corresponding flow passage and with an area above said lamella plate assembly in communication with said outlet trough means.
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Accused Products
Abstract
A lamella separation apparatus comprising a liquid receiving tank having a lamella plate assembly supported therein defining flow passages between adjacent lamella plates. The lamella plates have a generally rectangular inclined settling surface and rear surface and a leg portion extending perpendicular to an upper portion of the rear surface along the entire width thereof. The leg portion extends between adjacent lamella plates in closing relationship to the corresponding flow passage therebetween. A plurality of horizontally spaced orifices extend through the lamella plates at an elevation a small distance below the elevation of the leg portion in communication with a corresponding flow passage for directed clarified liquid therethrough into an area above the lamella plate assembly. The orifices are sized so as to create a small pressure drop across the orifices to ensure substantially equal flow distribution through the flow passages. The lamella plates have spacer lugs at the lower and central portions thereof and are individually removable from the lamella plate assembly.
66 Citations
14 Claims
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1. In an apparatus for separation of solids suspended in a liquid, said apparatus including a tank having a lamella plate assembly located within said tank defining a plurality of parallel inclined flow passages therein, an inlet distribution means for directing liquid to be treated into said tank and upwardly through said flow passages, and an outlet trough means extending transversely with respect to said flow passages for receiving clarified liquid from said flow passages;
- an improved lamella plate assembly, comprising;
a plurality of spaced-apart inclined parallel lamella plates defining said flow passages therebetween, said lamella plates having a generally rectangular inclined settling surface and a rear surface;
each of said lamella plates having a leg portion extending substantially perpendicular to an upper end portion of said rear surface substantially along the entire width thereof, said leg portion extending between adjacent lamella plates such that the outer edges thereof contact an adjacent settling surface in closing relationship to a corresponding flow passage therebetween; and
a plurality of horizontally spaced-apart orifices extending through said lamella plates at an elevation below the elevation of said leg portions said orifices being in communication with a corresponding flow passage and with an area above said lamella plate assembly in communication with said outlet trough means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- an improved lamella plate assembly, comprising;
Specification