Aerobic sewage digestion system

Claim 1

SELF CONTAINED CLOSED AEROBIC SEWAGE TREATMENT APPARATUS COMPRISING A CLOSED TANK HAVING A CYLINDRICAL WALL ORIENTED AROUND A GENERALLY HORIZONTALLY AXIS AND HAVING FIRST AND SECOND EN WALLS JOINING THE CYLINDRICAL WALL IN COMPLETION OF A CLOSED BODY, A SEWAGE INFLOW OPENING IN THE FIRST END WALL, A EFFLUENT OUTFLOW OPENING MOUNTED IN THE SECOND END WALL, A FIRST GENERALLY VERTICAL PARTITION EXTENDING UPWARD WITHIN THE TANK FROM A LOWER PORTION OF THE CYLINDRICAL WALL TO A POSITION SPACED SLIGHTLY BENEATH AN UPPER PORTION OF THE CYLINDRICAL WALL, THEREBY FORMING A FIRST CHAMBER BETWEEN THE FIRST PARTITION AND THE FIRST END WALL FOR PRETREATMENT OF THE INCOMING SEWAGE, AN OPENNG IN THE FIRST PARTITION FOR CONDUCTING LIQUID MATERIAL OUT OF THE FIRST CHAMBER, A SECOND PARTITION EXTENDING FROM A POSITION SPACED UPWARD FROM A LOWER PORTION OF THE CYLINCRICAL WALL AND NEAR THE SECOND END WALL GENERALLY UPWARD TO A POSITION SPACED FROM N UPPER PORTION OF THE CYLINDRICAL WALL, THEREBY DIVIDING THE TANK UNTO A SECOND CENTRAL CHAMBER AND A THIRD CHAMBER NEAR THE SECOND END WALL OF THE TANK, AERATION MEANS EXTENDING DOWNWARDS IN THE CENTRAL CHAMBER AND ALONG A BOTTOM OF THE CENTRAL CHAMBER FOR RELEASING OXYGEN BEARING MATERIAL INTO SEWAGE IN THE SECOND CHAMBER FOR AERATING THE SEWAGE AND PROMOTING UPWARD CIRCULATION, AN OPENING IN THE SECOND PARTITION FOR PERMITTING SEWAGE TO FLOW FROM THE CENTRAL CHAMBER TO THE THIRD CHAMBER AND MEANS FOR RETURNING SOLID MATERIALS FROM THE THIRD CHAMBER TO THE SECOND CHAMBER, WHEREBY SOLID MATERIALS RETURNS TO THE CENTRAL CHAMBER AND LIQUID EFFLUENT FLOWS THROUGTH THE EFFLUENT OUTFLOW OPENING IN THE SECOND END WALL, A FIRST MODIFIED "T" CONNECTED TO THE INFLOW OPENING IN THE FIRST END WALL AND EXTEND DOWNWARD FOR DIRECTING FLOW OF SEWAGE DOWNWARD IN THE FIRST CHAMBER, A SECOND MODIFIED "T" HAVING A SHORT HORIZONTAL LEG PORTION CONNECTED TO THE OPENING IN THE FIRST VERTICAL PARTITION AND HAVING AN ELONGATED PORTION EXTENDING DOWNWARD INTO THE FIRST CHAMBER AND OPENING AT A REMOTE END, WHEREBY SEWAGE FLOWS UPWARD THROUGH THE ELONGATED PORTION AND THEN THROUGH THE LEG PORTION INTO THE CENTRAL CHAMBER, WHEREIN THE UPPER ENDS OF THE "T"S OPEN TO THE SPACE AT THE TOP OF THE FIRST CHAMBER ABOVE SEWAGE LEVEL IN THE FIRST CHAMBER, AN UPWARD OPENING IN THE CYLINDRICAL WALL ABOVE THE FIRST GENERALLY VERTICAL PARTITION AND A VERTICAL MANWAY, CONNECTED AROUND THE UPWARD OPENING AND EXTENDING UPWARD THEREFROM, AND A PLATE COVERING THE MANWAY AS ITS TOP, THEREBY PROVIDING ACCESS TO THE FIRST CHAMBER AND TO THE CENTRAL CHAMBER, AN OPENING IN AN UPPER PORTION OF THE CYLINDRICAL WALL ABOVE THE THIRD CHAMBER, AND A MANWAY SURROUNDING THE OPENING AND EXTENDING UPWARD THEREFROM AND A COVER ON THE MANWAY FOR PROVIDING ACCESS TO THE TANK IN THE AREA OF THE THIRD CHAMBER, A BOTTOM WALL CONNECTED TO THE SECOND END WALL BELOW THE EFFLUENT OUTFLOW OPENING AND A THIRD PARTITION CONNECTED TO THE BOTTOM WALL, THEREBY FORMING A TROUGH ADJACENT THE EFFLUENT OUTFLOW OPENING WHEREBY EFFLUENT FLOWS INTO THE TROUGH FROM THE THIRD CHAMBER AND OUT OF THE TROUGH THROUGH THE EFFLUENT OPENING.

Claim 9

The method of waste water treatment comprising flowing waste water into a unitary self contained tank, having a cylindrical wall oriented around a horizontal axis, slowing the flow and holding the waste water in a pretreatment settlement chamber having a cylindrical wall within one longitudinal end of the tank, precipitating solids and sludge from the waste water in the pretreatment chamber and collecting sludge in a curved bottom of the pretreatment chamber digesting the sludge in the pretreatment chamber, flowing the waste water from the pretreatment chamber through an opening near the top of a partition into a relatively large cylindrical wall aeration chamber within the tank, introducing oxygen near a bottom of the aeration chamber in a line along a bottom portion of the cylindrical wall, and slowly circulating waste water within the aeration chamber cylindrically within the cylindrical wall, thereby encouraging mixture of the waste water with oxygen and promoting proliferation of aerobic bacteria, further digesting waste materials in the waste water, flowing the waste water out of the aeration chamber into a clarifier chamber, slowing flow of the waste water in the clarifier chamber, precipitating solids from the waste water in the clarifier chamber, gathering precipitated solids at the bottom of the cylindrical wall, and returning the precipitated solids which are rich in aerobic bacteria to the aeration chamber, collecting clarified liquid in a trough along an end wall and flowing clarified liquid from the clarifier chamber out of the tank through an effluent opening, and further comprising directing influent downward through an open top ''''T'''' in the pretreatment tank and flowing waste water upward through an open top ''''T'''' and out from the pretreatment chamber into the aeration chamber, accessing the pretreatment chamber and the aeration chamber through an opening in the cylindrical wall and a manway attached around that opening above the partition separating the pretreatment and aeration chambers, and accessing the clarifier chamber through an opening in the cylindrical wall and a manway above the clarifier chamber.

Claim 10

The method of waste water treatment comprising flowing waste water into a unitary self contained tank, having a cylindrical wall oriented around a horizontal axis, slowing the flow and holding the waste water in a pretreatment settlement chamber having a cylindrical wall within one longitudinal end of the tank, precipitating solids and sludge from the waste water in the pretreatment chamber and collecting sludge in a curved bottom of the pretreatment chamber digesting the sludge in the pretreatment chamber, flowing the waste water from the pretreatment chamber through an opening near the top of a partition into a relatively large cylindrical wall aeration chamber within the tank, introducing oxygen near a bottom of the aeration chamber in a line along a bottom portion of the cylindrical wall, and slowly circulating waste water within the aeration chamber cylindrically within the cylindrical wall, thereby encouraging mixture of the waste water with oxygen and promoting proliferation of aerobic bacteria, further digesting waste materials in the waste water, flowing the waste water out of the aeration chamber into a clarifier chamber, slowing flow of the waste water in the clarifier chamber, precipitating solids from the waste water in the clarifier chamber, gathering precipitated solids at the bottom of the cylindrical wall, and returning the precipitated solids which are rich in aerobic bacteria to the aeration chamber, collecting clarified liquid in a trough along an end wall and flowing clarified liquid from the clarifier chamber out of the tank through an effluent opening, and further comprising directing influent downward through an open top ''''T'''' in the pretreatment tank and flowing waste water upward through an open top ''''T'''' and out from the pretreatment chamber into the aeration chamber, accessing the pretreatment chamber and the aeration chamber through an opening in the cylindrical wall and a manway attached around that opening above the partition separating the pretreatment and aeration chambers, and accessing the clarifier chamber through an opening in the cylindrical wall and a manway above the clarifier chamber.