Apparatus for anaerobic digestion

Claim 1

IN AN APPARATUS FOR ANAEROBIC DIGESTION OF LIQUID WASTES COMPRISING A TANK, OUTLET MEANS FOR REMOVING SOLIDS FROM SAID TANK, A GAS-TIGHT COVER FOR SAID TANK, MEANS FOR REMOVING GAS FROM SAID TANK, A CLARIFICATION COMPARTMENT HAVING A WALL IN SAID TANK, SAID COMPARTMENT OCCUPYING ONLY A MINOR PORTION OF THE UPPER PART OF SAID TANK, AND OUTLET MEANS, INCLUDING AN OVERFLOW, FOR REMOVING CLARIFIED LIQUID FROM SAID CLARIFICATION COMPARTMENT, SAID WALL EXTENDING DOWNWARDLY FROM AN ELEVATION ABOVE SAID OVERFLOW, PARTITION MEANS FORMING A PASSAGEWAY WITH THE WALL OF SAID CLARIFICATION COMPARTMENT AND ESTABLISHING IN SAID TANK A MIXING-CIRCULATION CHAMBER AND A LIQUID-SOLIDS SEPARATION SPACE, SAID CLARIFICATION COMPARTMENT BEING SUPERIMPOSED ON, AND IN UNRESTRICTED HYDRAULIC COMMUNICATION WITH, SAID LIQUID-SOLIDS SEPARATION SPACE, A ROTOR OF THE RADICAL FLOW TYPE IN SAID MIXINGCIRCULATION CHAMBER, SAID ROTOR HAVING PUMPING VANES ADAPTAED, UPON ROTATION OF SAID ROTOR, TO ESTABLISH A CIRCULATION OF WASTES IN PREDOMINANTLY VERTICAL PLANES FROM SAID MIXING-CIRCULATION CHAMBER THROUGH SAID PASSAGEWAY TO SAID LIQUID-SOLIDS SEPARATION SPACE, SAID ROTOR HAVING BLADES ADAPTED, UPON ROTATION OF SAID ROTOR, TO ESTABLISH A CIRCULATION OF WASTES IN PREDOMINANTLY HORIZONTAL PLANES IN THE LOWER PORTION OF SAID MIXING-CIRCULATION CHAMBER, MEANS FOR ROATION SAID RORTOR, AND INLETA MEANS FOR INTRODUCING WASTES TO BE DIGESTED TO SAID MIXING-CIRCULATION CHAMBER.