1
Thomas A DeBusk: Wastewater treatment system and method. Azurea, Allen Dyer Doppelt Milbrath & Gilchrist, March 31, 1998: US05733453 (57 worldwide citation)

An improved wastewater treatment system requires less land usage and achieves greater control of the modular treatment processes embodied therein. A vertically stacked system contains at least two different treatment process zones, one atop the other and separated by a water-impermeable barrier, whi ...


2
David C Austin, Eric Lohan: Tidal vertical flow wastewater treatment system and method. Dharma Living Systems, Allen Dyer Doppelt Milbrath & Gilchrist P A, March 8, 2005: US06863816 (42 worldwide citation)

A wastewater treatment system includes a tidal, sequential vertical flow marsh cell system having at least three marsh cells in serial forward fluid communication. Incoming wastewater to be treated is channeled to at least the first and a second marsh cell, and a portion of water exiting a final mar ...


3
Robert A Elefritz, Wenjun Liu: Wastewater treatment system and method. Siemens Water Technologies, November 25, 2008: US07455765 (39 worldwide citation)

The invention is directed to a wastewater treatment system having an anoxic biological treatment zone, an aerobic biological treatment zone and a separator. The concentration of oxygen in streams within the system is strategically managed for improved removal of nutrient from the wastewater. A sourc ...


4
James M Carlberg, Jon C Van Olst, Michael J Massingill, Rodney J Chamberlain: Aquaculture wastewater treatment system and method of making same. Kent Sea Tech Corporation, Richard D Clarke, September 10, 2002: US06447681 (34 worldwide citation)

An aquaculture wastewater treatment system is provided including three wastewater treatment subsystems. The first subsystem is comprised of a fish raceway solids removal channel populated with relatively high densities of a detritivorous fish such as tilapia and/or carp, that have high potential as ...


5
David DiGregorio, David T Berry: Two-phase orbital-type wastewater treatment system and method. Baker Hughes Incorporated, Skjerven Morrill MacPherson Franklin & Friel, August 10, 1993: US05234595 (31 worldwide citation)

A wastewater orbital treatment system includes an elongated racetrack-like tank containing a central partition wall. A surface aerator is mounted adjacent to at least one end of the partition wall to both aerate and propel the mixed liquor including biomass around the orbital tank. An aerobic zone f ...


6
Dean N Morrison, Marvin Daniels, Frank Sinclair, G S Tiwari: Wastewater treatment system and method. Kolisch Hartwell Dickinson McCormack & Heuser, October 20, 1992: US05156741 (30 worldwide citation)

A biological treatment system and method is provided for treating wastewater from a treatment plant which provides primary and secondary treatment. An aggregate-filled bed enclosed by a water-impervious barrier is used to receive and cleanse the wastewater using the roots of turf grass grown on the ...


7
Susan Pilgram, Kenneth L Norcross III, Reza Shamskhorzani: Wastewater treatment system and method of control. United States Filter Corporation, Wolf Greenfield & Sacks P C, May 7, 2002: US06383389 (28 worldwide citation)

A wastewater treatment system for treating a wastewater stream from industrial and municipal sources uses a control system to sequence and supervise the treatment steps in a batch flow mode of operation or a continuous flow mode of operation. In operation, the wastewater treatment system predominant ...


8
Thomas J Coyne: Wastewater treatment system and method. Daniel R Head Johnson & Kachigian Alexander, June 10, 1997: US05637221 (22 worldwide citation)

A wastewater treatment system and method for substantially reducing or eliminating total suspended solids (TSS), biological organic discharge or biochemical oxygen demand (BOD), and fats, oils and greases (FOG) contaminants. The system includes at least one mixing chamber for mixing wastewater with ...


9
Haskell Edwards: Multi-stage facultative wastewater treatment system and method hydrolyzing biosolids. Atara Environmental, Darby & Darby, July 11, 2000: US06086765 (18 worldwide citation)

A treatment system for a wastewater influent containing having a facultative tank with a vertically disposed lower anaerobic treatment zone, a middle microaerophilic treatment zone and an upper aerobic treatment zone. A baffle extends vertically in the tank in at least portions of said upper and mid ...


10
Thomas J Coyne: Wastewater treatment system and method. Daniel R Head Johnson & Kachigian Alexander, July 30, 1996: US05540836 (15 worldwide citation)

A wastewater treatment system and method for substantially reducing or eliminating total suspended solids (TSS), biological organic discharge or biochemical oxygen demand (BOD), and fats, oils and greases (FOG) contaminants. The system includes at least one mixing chamber for mixing wastewater with ...



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