31
John W Lee Jr: Method and apparatus for the treatment of particulate biodegradable organic waste. CH2M Hill, Swanson & Bratschun, June 14, 2005: US06905600 (32 worldwide citation)

A method for treating particulate biodegradable organic waste includes sizing the waste and adding a base prior to introducing the waste to a thermal hydrolysis reactor and hydrolyzing the waste at a temperature of about 130° C. or greater and a pressure greater than the saturated water vapor pressu ...


32
James D McElvaney: Anaerobic digester system and method. Leighton K Chong, July 3, 2001: US06254775 (31 worldwide citation)

An anaerobic digester system has a vertically upright vessel, a matrix arranged in the vessel supporting a microorganism biomass thereon, an input for supplying an input slurry of liquid and suspended solids at an upper portion of the vessel above the matrix, a gas output at the top of the vessel fo ...


33
Dennis A Burke: Anaerobic treatment process for the rapid hydrolysis and conversion of organic materials to soluble and gaseous components. Christensen O Connor Johnson & Kindness PLLC, September 23, 1997: US05670047 (31 worldwide citation)

An anaerobic digestion process capable of converting organic slurries to precipitates, as well as soluble and gaseous products through a series of reactors or process steps. The organic material is processed through three sequential steps consisting of two anaerobic digestion steps and an intermedia ...


34
Ken Stamper, Richard Skinner: Process for producing energy, feed material and fertilizer products from manure. Dunlap Codding & Rogers P C, February 18, 2003: US06521129 (31 worldwide citation)

A process for treating manure using anaerobic digestion includes introducing manure into a mixing vessel containing a digester liquid and agitating and filtering a slurry formed therefrom to remove substantially all water insoluble solids, thereby leaving a liquid containing ammonia and reactive org ...


35
Ryoichi Haga, Masahiko Ishida, Yoji Odawara: Anaerobic digestion process of wastes containing cellulose. The Agency of Industrial Science and Technology, Birch Stewart Kolasch and Birch, April 9, 1985: US04510243 (30 worldwide citation)

The present invention relates to an anaerobic digestion process of wastes containing cellulose, in which, after liquefying by bringing wastes containing cellulose in slurry state into contact with facultative anaerobic bacteria with pH adjusted between 6.5-8.0 and oxidation-reduction potential contr ...


36
Harry Wiljan, Ulrich Niefnecker, Ottokarl Muck, Hans Kubler, Roland Schnell, Roland Carra, Matthias Wild: Processing waste materials for anaerobic digestion of the biogenic-organic constituents. REA Gesellschaft fur Recycling von Energie und Abfall mbH, Lowe Price LeBlanc & Becker, January 3, 1995: US05377917 (29 worldwide citation)

In a process of treating waste materials for an anaerobic digestion of the biogenic organic constituents of the garbage, particularly of the source separated organic waste, the wet waste, the residual waste and the commercial wastes, an easily dewaterable suspension of the biogenic organic substance ...


37
Jason C H Shih: Process and apparatus for anaerobic digestion. North Carolina State University, Bell Seltzer Park & Gibson, June 11, 1996: US05525229 (29 worldwide citation)

A process for the anaerobic digestion of organic carbonaceous material is disclosed. The process includes the steps of (a) hydrolyzing organic carbonaceous material to produce a digester stream including hydrolysis products; (b) subjecting the digester stream to a first methanation phase operating a ...


38
Anthony J Priestley, Mark A Woods: Sewage treatment. Commonwealth Scientific and Industrial Research Organisation, Cushman Darby & Cushman, January 1, 1991: US04981593 (29 worldwide citation)

The sewage treatment process combines physico-chemical clarification using fine material or clay particles with anaerobic digestion of a concentrated sewage. The particles are preferably magnetite. The sewage (10) is mixed with magnetite (12) having a hydroxylated surface layer in tanks (14, 16, 18, ...


39
Robert O Hoffland: Method and apparatus for treating animal waste and wastewater. Hoffland Environmental, The Matthews Firm, February 28, 2006: US07005068 (28 worldwide citation)

Novel methods and apparatuses are disclosed for the treatment of wastewater to reduce often associated offensive odors by promoting aerobic conditions through decreasing the amount of oxygen required to maintain aerobic cultures and/or aerobic biological activity in the wastewater. Also, the wastewa ...


40
Sambhunath Ghosh, David P Chynoweth, Paul B Tarman: Two phase anaerobic digestion. Institute of Gas Technology, Thomas W Speckman, September 29, 1987: US04696746 (28 worldwide citation)

A two phase anaerobic digestion process for production of methane from organic carbonaceous material in which an active acid forming microbial population is maintained in a first acid forming digestion phase and an active methane forming microbial population is maintained in a second methane forming ...



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