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Class Information
Number: 210/221.1
Name: Liquid purification or separation > With means to add treating material > Directly applied to separator > Submerged fluid inlet > With outlet at surface, e.g., froth flotation, etc.
Description: Apparatus in which there is a means to remove a lighter constituent.










Sub-classes under this class:

Class Number Class Name Patents
210/221.2 And gas injecting means other than by mechanical agitation 738


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8647514 Method for removing impurities from water and a device for carrying out said method Feb. 11, 2014
8551330 Carbon retention screen with variable discharge head Oct. 8, 2013
8524089 Combined sedimentation and pressure floatation wastewater treatment tank Sep. 3, 2013
8440076 Dissolved air flotation unit May. 14, 2013
8404121 Method for separating suspended solids from a waste fluid Mar. 26, 2013
8197607 Dishwasher comprising a filter system Jun. 12, 2012
8173016 Mechanical flotation device for reduction of oil, alkalinity and undesirable gases May. 8, 2012
8173017 Single-cell mechanical flotation system May. 8, 2012
8101070 Wastewater treatment apparatus Jan. 24, 2012
8070961 So-called water catalytic decarbonation appliances Dec. 6, 2011
8062519 Gasket distributor Nov. 22, 2011
8029668 Fluid treatment device and method Oct. 4, 2011
7943041 System for removing particulate matter from wastewater May. 17, 2011
7927485 System for filtering water or wastewater Apr. 19, 2011
7776211 System and method for biological wastewater treatment and for using the byproduct thereof Aug. 17, 2010
7651610 Water aerating and dirt collecting assembly for aquarium Jan. 26, 2010
7648631 Apparatus for wastewater treatment using nitrogen/phosphorus removal and floatation separation Jan. 19, 2010
7625484 Water treatment apparatus Dec. 1, 2009
7565981 Apparatus and method for separating materials Jul. 28, 2009
7556732 Must clarification machine Jul. 7, 2009
7468136 Grit trap Dec. 23, 2008
7449117 Filtration unit, installation method for a filtration unit and filtration apparatus Nov. 11, 2008
7438809 Single-cell mechanical flotation system Oct. 21, 2008
7422688 Biological wastewater treatment process and reactor Sep. 9, 2008
7416661 Mechanical flotation device for reduction of oil, alkalinity and undesirable gases Aug. 26, 2008
7314140 Apparatus and method for separating materials Jan. 1, 2008
7279101 Anaerobic biological wastewater treatment system and process Oct. 9, 2007
7238284 Apparatus for processing alkaline solution Jul. 3, 2007
7131370 Centrifugal separating device and method of clarifying must during the production of wine Nov. 7, 2006
6958121 Aerobic digester for bodily waste material Oct. 25, 2005
6890431 Buoyant media flotation May. 10, 2005
6881297 Process for aerating dispersions Apr. 19, 2005
6875351 Methods and apparatus for oil demulsification and separation of oil and suspended solids from produced water Apr. 5, 2005
6841072 Method and device for the anaerobic purification of a slurry which contains organic constituents Jan. 11, 2005
6830690 Two-stage high synthesis activated sludge system with intermediate bio-solids removal Dec. 14, 2004
6780335 Liquid separation and extraction Aug. 24, 2004
6778881 Monitoring and control of a froth flotation plant Aug. 17, 2004
6676833 Apparatus for removing grit and grease from water Jan. 13, 2004
6558558 Apparatus for circulating a fluid May. 6, 2003
6551516 Methods for removing grit and grease from water Apr. 22, 2003
6505744 Solid-liquid separation equipment in particular for biological purification of wastewater Jan. 14, 2003
6497819 Method and apparatus for treating waste water Dec. 24, 2002
6475337 Process for aerating dispersions Nov. 5, 2002
6475384 Flotation reactor and method for flotation Nov. 5, 2002
6413366 Method and device for flotation of pollutants from an aqueous fibrous material suspension Jul. 2, 2002
6342159 Shipboard biomechanical oil water separator Jan. 29, 2002
6293529 Bubble generating apparatus Sep. 25, 2001
6126815 Sequential air dissolved floatation apparatus and methods Oct. 3, 2000
6090277 Reactor for the depuration of polluted waste waters Jul. 18, 2000
6083389 Flotation plant Jul. 4, 2000

1 2 3 4










 
 
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