Sewage disposal system

Claim 1

IN A SEWAGE DISPOSAL SYSTEM, AN AERATION TANK, A SEWAGE SUPPLY PIPE FOR DELIVERING SWEAGE INTO SAID AERATION TANK, A SETTLING TANK EXTENDING ALONG SAID AERATION TANK AND SEPARATED THEREFROM BY A COMMON WALL, SAID COMMON WALL HAVING DELIVERY OPENINGS THERETHROUGH COMMUNICATING SAID TANKS, A DOWNWARDLY EXTENDING SEPARATING WALL IN SAID SETTLING TANK IN SPACED RELATION TO SAID COMMON WALL AND TERMINATING ABOVE THE BOTTOM OF SAID SETTLING TANK, SAID SEPARATING WALL AND SAID COMMON WALL PROVIDING A CHAMBER THEREBETWEEN FOR THE COLLECTION OF FLOATABLE MATERIAL, A SOURCE OF AIR UNDER PRESSURE, A PLURALITY OF PIPES CONNECTED TO SAID SOURCE AND PROVIDED AT SPACE LOCATIONS ALONG SAID AERATION TANK, EACH PIPE HAVING A DOWNWARDLY EXTENDING PORTION WITH A PLURALITY OF DISCHARGE OPENINGS INTERMEDIATE THE TOP AND BOTTOM OF THE LIQUID IN SAID AERATION TANK, AIR LIFT MEANS CONNECTED TO SAID SOURCE AND EXTENDING FROM SAID COLLECTION CHAMBER FOR THE RETURN OF MATERIAL FROM SAID SETTLING TANK TO SAID AERATION TANK, FLUID DISCHARGE MEANS FOR DELIVERY OF FLUID FROM SAID SETTLING TANK AT A PREDETERMINED LEVEL, AIR DELIVERY MEMBERS FOR IMPELLING FLOATABLE MATERIAL ALONG SAID COLLECTION CHAMBER, AND A CONVEYOR MEMBER FOR RECEIVING AND REMOVING THE FLOATABLE MATERIAL.