Screw conveyor type separation apparatus and wastewater treatment system
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United States of America Patent
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Aug 22, 2017
Grant Date -
Feb 23, 2017
app pub date -
Nov 8, 2016
filing date -
Jun 4, 2014
priority date (Note) -
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Abstract
A casing that squeezes sludge floc at one end portion, a screw shaft, a first screw blade spirally provided on an outer peripheral surface of the screw shaft, and a second screw blade provided side by side along a longitudinal direction of the screw shaft with the first screw blade with a predetermined interval from the first screw blade, are included. In the casing, a concentration zone and a separated liquid zone, which are substantially divided from each other by the first screw blade and the second screw blade, are formed. By rotation of the screw shaft, the sludge floc is squeezed in the concentration zone to be separated into sludge and separated liquid, and the separated liquid is moved rearward in the separated liquid zone to be discharged, while the sludge is discharged outside.
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