Sedimentation and floatation wastewater treatment device with a heater
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United States of America Patent
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Jul 28, 2015
Grant Date -
Jun 21, 2012
app pub date -
Feb 24, 2012
filing date -
Nov 23, 2009
priority date (Note) -
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Abstract
A combined sedimentation and pressure floatation wastewater treatment tank includes a tank body, a sedimentation treatment device and a pressure floatation treatment device. The tank body contains a predetermined amount of wastewater for treatment. The sedimentation treatment device is operated to remove relatively heavier sludge from the wastewater by sedimentation treatment, and the pressure floatation treatment device is operated to remove relatively lighter sludge from the initially treated wastewater by pressure floatation treatment. In operation, the wastewater is initially treated by the sedimentation treatment device and is further treated by the pressure floatation treatment device. Alternatively, the wastewater is initially treated by the pressure floatation treatment device and is further treated by the sedimentation treatment device.
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