Patent ID: 6921485
Filing Date: 2005-07-26
Classification: C02F,C12M,Y02E,Y02W

Abstract:
1. A method for treating an organic matter influent, comprising the steps of: providing an organic matter influent to be treated by an anaerobic two phase digestion system to an acid reactor; maintaining conditions in said acid reactor to facilitate creation of a volatile acid in a fluid having a water and a suspended solids content forming a sludge effluent; communicating said sludge effluent to an acid separation element; separating said water and said volatile acid from said suspended solids; communication a liquid stream from said acid separation element to a methane reactor; communication a solids recycle stream from said acid separation element to said acid reactor; maintaining conditions in said methane reactor to facilitate creation of a biogas; communicating a liquid effluent from said methane reactor to a methane separation element; separating a liquid from a solids; communicating a portion of a second solids recycle stream from said methane separation element to said methane reactor and communicating a portion of said second solids recycle stream from said methane separation element to said acid reactor; communicating said biogas from said methane reactor; and discharging a first excess solids discharge from said acid reactor and from said acid separation element, and a second excess solids discharge from said methane reactor and from said methane separation element.