04067801 is referenced by 40 patents and cites 4 patents.

In a system for treatment of biochemical waste such as activated sludges, the waste is subjected to anaerobic stabilization processes, which include two phases of an acid fermentation and a methane fermentation effected in separate reactors. The waste after the acid fermentation is then separated into a liquid effluent for the methane fermentation and a waste sludge. The waste sludge which may cause secondary environmental pollution is re-treated within the anaerobic stabilization processes without withdrawing from the system.

Title
Process and system for anaerobic treatment of biochemical waste
Application Number
5/685901
Publication Number
4067801
Application Date
May 12, 1976
Publication Date
January 10, 1978
Inventor
Youji Odawara
Hitachi
JA
Ryooichi Haga
Hitachi
JA
Masahiko Ishida
Hitachi
JA
Agent
Craig & Antonelli
Assignee
Hitachi
JA
IPC
C02C 1/14
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