1
Jack L Ainsworth, Dan Atwood, Tom Rideout: Anaerobic digester system. Rick Matos, Innovar L L C, October 9, 2001: US06299774 (104 worldwide citation)

A process to recover energy, reduce pollution potential, and add value to organic waste such as animal manure is described. The process involves the anaerobic digestion of feedstocks, such as animal manure, at low to high temperatures in batch, semi-continuous or continuous reactors. The process mak ...


2
Masahiko Ishida, Ryoichi Haga, Tadashi Ishibashi, Yoji Odawara: Anaerobic digestion process for organic wastes. Agency of Industrial Science & Technology, Birch Stewart Kolasch & Birch, January 1, 1985: US04491522 (88 worldwide citation)

The present invention relates to an anaerobic digestion process for organic wastes with a high efficiency and an improved recovery rate of methane.


3
Roy E McAlister: Method and apparatus for sustainable energy and materials. January 10, 2006: US06984305 (87 worldwide citation)

A process for the production of hydrogen from anaerobically decomposed organic materials by applying an electric potential to the anaerobically decomposed organic materials, including landfill materials and sewage, to form hydrogen, and for decreasing the time required to treat these anaerobically d ...


4
Theodore Onyeche, Michael Sievers: System and method for improved treatment of wastewater. Leydig Voit & Mayer, September 3, 2002: US06444124 (67 worldwide citation)

A method and system for treating sludge in a wastewater facility involving a novel concentration step optimises the energy balance and sludge solids mass reduction incurred from concentration and low pressure homogenization of the sludge.


5
Steven R Woodruff: Food, animal, vegetable and food preparation byproduct treatment apparatus and process. Gold Kist, Foley & Lardner, October 15, 2002: US06464875 (62 worldwide citation)

A system and method for converting animal, vegetable, and food byproduct materials into useful bio-gas and fertilizer, and/or soil amendment products has an anaerobic digester, a liquid-solids separating unit, an ammonia stripper, an ammonia absorption unit, a solids processing unit, and an equiliza ...


6
Paul B Tarman, David P Chynoweth: Hybrid bio-thermal gasification. Institute of Gas Technology, Thomas W Speckman, September 15, 1981: US04289625 (62 worldwide citation)

A hybrid bio-thermal gasification process for improved carbonaceous gasification wherein a biological feed is anaerobically digested with product methane and carbon dioxide containing gas withdrawn from the digester and biological residue separately withdrawn from the digester and introduced into a ...


7
Enrique R Witt: Biological filter and process. Celanese Corporation, Stewart N Rice, Ralph M Pritchett, September 28, 1982: US04351729 (58 worldwide citation)

A biological filter apparatus, and process for using the same, wherein organic pollutants in a waste water stream may be biologically degraded by a biomass of suitable microorganisms located on the surface of a packing. The filter comprises a sealed vessel in which the packing having the biomass the ...


8
Jean Marie Rovel, Claude Prevot, Roger Nicol: Process and apparatus for the anaerobic treatment of waste water in a filter including granular material. Degremont, Wenderoth Lind & Ponack, November 13, 1984: US04482458 (56 worldwide citation)

Waste water to be treated is introduced into a filter including granular material for supporting the biomass resulting from an anaerobic treatment operation. During such treatment operation biogas is formed, and the waste water being treated and the granular material supporting the biomass are conti ...


9
Jack L Ainsworth, Dan Atwood, Tom Rideout: Integrated anaerobic digester system. Rick Matos, Innovar L L C, May 27, 2003: US06569332 (52 worldwide citation)

A process to recover energy, reduce pollution potential, and add value to organic waste such as animal manure is described. The process involves the anaerobic digestion of feedstocks, such as animal manure, at low to high temperatures in batch, semi-continuous or continuous reactors. The process mak ...


10
Harold L Ball: Method of discharging septic tank filtered effluent. Orenco Systems, Chernoff Vilhauer McClung Birdwell & Stenzel, March 27, 1984: US04439323 (51 worldwide citation)

A method for filtering and discharging waste water from a septic tank in predetermined increments and preventing passage of suspended solids from the tank while resisting blockage of the fluid discharge apparatus by such solids. A removable fluid discharge device, such as a submersible pump or dosin ...