08470177 is referenced by 3 patents and cites 70 patents.

A system and method for treating high-strength organic liquid waste. Generally, the method includes feeding influent high-strength organic liquid waste including organic molecules to an anaerobic digester, converting at least a portion of the organic molecules in the liquid waste to acids using acid forming bacteria, converting at least a portion of the acids in the liquid waste to methane using methanogenic bacteria, separating the liquid waste after treatment with the methanogenic bacteria into alkaline sludge and effluent, and using the alkaline sludge to adjust the pH of the liquid waste in the anaerobic digester. In the case of acidic high-strength organic liquid wastes, a portion of the acids produced by the acid forming bacteria may be recirculated to the front of the anaerobic digester and combined with influent high-strength organic liquid waste.

Title
Method and apparatus for anaerobic digestion of organic liquid waste streams
Application Number
12/516104
Publication Number
8470177 (B2)
Application Date
November 27, 2006
Publication Date
June 25, 2013
Inventor
Stephen W Dvorak
Chilton
WI, US
Agent
Whyte Hirschboeck Dudek S C
Assignee
DVO Licensing
WI, US
IPC
C02F 11/04
C02F 3/28
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