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Stephen W Dvorak: Anaerobic digester employing circular tank. DVO, Whyte Hirschboeck Dudek S C, Michael J Cronin, March 12, 2013: US08394271 (3 worldwide citation)

A method and apparatus for the anaerobic digestion of high-solids waste material. The apparatus includes a closed container having a relatively circular outer wall. The closed container has a first passage having an inlet in which the waste material flows in a first direction, a second passage in wh ...


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StephenWDvorak: Anaerobic digester employing circular tank. GHD, Wu Jingjing, Zheng Xia, December 9, 2009: CN200680056886

A method and apparatus for the anaerobic digestion of high-solids waste material. The apparatus includes a closed container having a relatively circular outer wall. The closed container has a first passage having an inlet in which the waste material flows in a first direction, a second passage in wh ...


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Stephen W Dvorak: Anaerobic Digester Employing Circular Tank. Whyte Hirschboeck Dudek S C, July 8, 2010: US20100173391-A1

A method and apparatus for the anaerobic digestion of high-solids waste material. The apparatus includes a closed container having a relatively circular outer wall. The closed container has a first passage having an inlet in which the waste material flows in a first direction, a second passage in wh ...


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Dvorak Stephen W: Anaerobic digester employing circular tank. Ghd, Dvorak Stephen W, HARTWIG Gregory J, June 5, 2008: WO/2008/066508

A method and apparatus for the anaerobic digestion of high-solids waste material. The apparatus includes a closed container having a relatively circular outer wall. The closed container has a first passage having an inlet in which the waste material flows in a first direction, a second passage in wh ...



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