Wastewater lifting station
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United States of America Patent
Stats
-
Jan 23, 2018
Grant Date -
Jun 9, 2016
app pub date -
Jul 8, 2014
filing date -
Jul 12, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A wastewater lifting station is provided, in which at least one solids collection tank contains at least one screen for guiding wastewater therethrough and retain solids. The screen divides the solids collection tank into a region containing solids and a region free of solids, and is connected in a pivotable manner by at least one hinge to a flange of the solids collection tank. The screen in an edge region away from the hinge has a rake of comb-type webs and holes that are open on one side in the screen plane. The wastewater containing solids flows through a feed into the collection tank, is filtered through the screen, and the wastewater that is free of solids is collected in a tank downstream. When the wastewater lifting station pumps, the wastewater that is free of solids is pumped by a pump in counterflow through the screen into a pressurized line while the feed is shut off by a check valve, and the screen pivots about the hinge and is back-flushed during the process. Reliable cleaning of the screen, even of fibers, is achieved during pumping owing the rake shape and the pivoting of the screen.
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