Apparatus for conditioning precipitates and separating same from liquids

Claim 1

APPARATUS FOR TREATING LIQUID COMPRISING A RECTANGULAR TANK HAVING SIDE WALLS AND A BOTTOM, AN INLET FLUME CENTRALLY LOCATED IN THE UPPER PORTION OF SAID TANK, LIQUID DISTRIBUTING MEANS IN SAID INLET FLUME, A PAIR OF INCLINED WALLS EACH EXTENDING FROM SAID FLUME DOWNWARDLY AND OUTWARDLY, A PAIR OF INCLINED PARTITIONS EACH HAVING ITS UPPER END JOINED TO ONE OF SAID INCLINED WALLS, THE LOWER ENDS OF SAID INCLINED PARTITIONS BEING SPACED APART TO FORM A PASSAGEWAY, A PRIMARY MIXING CHAMBER BOUND BY SAID FLUME, THE UPPER PARTS OF SAID INCLINED WALLS AND SAID INCLINED PARTITIONS, SAID LIQUID DISTRIBUTING MEANS BEING ADAPTED TO DISCHARGE INTO SAID PRIMARY MIXING CHAMBER, A SECONDARY MIXING CHAMBER BELOW SAID PRIMARY MIXING CHAMBER BOUND BY SAID INCLINED PARTITIONS, THE LOWER PARTS OF SAID INCLINED WALLS AND SAID TANK BOTTOM, SAID PRIMARY AND SECONDARY MIXING CHAMBER COMMUNICATING WITH EACH OTHER THROUGH SAID PASSAGEWAY, SEDIMENTATION ZONES BETWEEN SAID SIDE WALLS AND SAID INCLINED WALLS, PORTS ADJACENT TO THE LOWER ENDS OF SAID INCLINED WALLS AND ESTABLISHING COMMUNICATION BETWEEN SAID SECONDARY MIXING CHAMBER AND SAID SEDIMENTATION ZONES, A HORIZONTAL SHAFT AGITATOR IN SAID PRIMARY MIXING CHAMBER, A PAIR OF HORIZONTAL SHAFT AGITATORS IN SAID SECONDARY MIXING CHAMBER, MEANS FOR ADMITTING LIQUID TO BE TREATED AND CHEMICAL TO SAID INLET FLUME, A PIPE TERMINATING IN SAID SECONDARY MIXING CHAMBER FOR ADMITTING A SECOND CHEMICAL TO SAID SECONDARY MIXING CHAMBER, MEANS FOR WITHDRAWING TREATED LIQUID FROM THE UPPER PORTION OF EACH OF SAID SEDIMENTATION ZONES, AND MEANS FOR WITHDRAWING SLUDGE FROM THE LOWER PORTION OF SAID TANK.