Apparatus for the biological purification of waste water

Claim 1

A DEVICE FOR THE PURIFICATION OF WASTE AND SEWAGE WATERS UTILIZING THE ACTIVATED SLUDGE PROCESS, COMPRISING: A DECANTING ZONE; AN AERATION ZONE LOCATED CENTRALLY WITH RESPECT TO SAID DECANTING ZONE; BOTTOM WALL MEANS FOR SAID AERATION ZONE HAVING RIDGE MEANS INCLUDING A FLOW DEFLECTING SURFACE; MEANS TO INTRODUCE WATER TO BE PURIFIED INTO THE CENTRAL PORTION OF THE UPPER PORTION OF SAID AERATION ZONE, AND INCLUDING FLOW DEFLECTING SURFACES; MEANS TO WITHDRAW PURIFIED WATER FROM THE UPPER PORTION OF SAID DECANTING ZONE; WALL MEANS SEPARATING SAID AERATION ZONE FROM SAID DECANTING ZONE, SAID WALL MEANS COMPRISING A VERTICAL UPPER SECTION AND AN INCLINED LOWER SECTION, SAID LOWER SECTION BEING INCLINED OUTWARDLY AND DOWNWARDLY FROM ITS TOP TO ITS BOTTOM TOWARDS SAID DECANTING ZONE; FIRST PASSAGEWAY MEANS FOR FLOW OF LIQUID FROM SAID AERATION ZONE TO SAID DECANTING ZONE THROUGH SAID UPPER WALL SECTION; SECOND PASSAGEWAY MEANS BETWEEN THE LOWER PORTION OF SAID UPPER WALL SECTION AND THE UPPER PORTION OF SAID LOWER WALL SECTION; THIRD PASSAGEWAY MEANS FOR FLOW OF SLUDGE FROM SAID DECANTING ZONE TO SAID AERATION ZONE BELOW THE LOWER PORTION OF SAID LOWER WALL SECTION; AND MEANS DISPOSED WITHIN SAID AERATION ZONE ADJACENT SAID THIRD PASSAGEWAY FOR INTRODUCING AIR INTO SAID AERATION ZONE, SAID AIR INTRODUCING MEANS BEING DISPOSED BETWEEN SAID INCLINED LOWER WALL MEANS AND RIDGE MEANS AND BETWEEN THE SAID WATER INTRODUCING MEANS AND SAID RIDGE MEANS, WHEREBY FLOW OF WATER IS INDUCED UPWARDLY PAST SAID SECOND PASSAGEWAY TO EFFECT FLOW OF WATER THROUGH SAID SECOND PASSAGEWAY FROM SAID DECANTING ZONE TO SAID AERATION ZONE.

Claim 2

A DEVICE FOR THE PURIFICATION OF WASTE AND SEWAGE WATERS UTILIZING THE ACTIVATED SLUDGE PROCESS, COMPRISING: A DECANTING ZONE; AN AERATION ZONE LOCATED CENTRALLY WITH RESPECT TO SAID DECANTING ZONE; BOTTOM WALL MEANS FOR SAID AERATION ZONE HAVING RIDGE MEANS INCLUDING A FLOW DEFLECTING SURFACE; MEANS TO INTRODUCE WATER TO BE PURIFIED INTO THE CENTRAL PORTION OF THE UPPER PORTION OF SAID AERATION ZONE, AND INCLUDING FLOW DEFLECTING SURFACES; MEANS TO WITHDRAW PURIFIED WATER FROM THE UPPER PORTION OF SAID DECANTING ZONE; WALL MEANS SEPARATING SAID AERATION ZONE FROM SAID DECANTING ZONE, SAID WALL MEANS COMPRISING A VERTICAL UPPER SECTION AND AN INCLINED LOWER SECTION, SAID LOWER SECTION BEING INCLINED OUTWARDLY AND DOWNWARDLY FROM ITS TOP TO ITS BOTTOM TOWARDS SAID DECANTING ZONE; FIRST PASSAGEWAY MEANS FOR FLOW OF LIQUID FROM SAID AERATION ZONE TO SAID DECANTING ZONE THROUGH SAID UPPER WALL SECTION; SECOND PASSAGEWAY MEANS BETWEEN THE LOWER PORTION OF SAID UPPER WALL SECTION AND THE UPPER PORTION OF SAID LOWER WALL SECTION; THIRD PASSAGEWAY MEANS FOR FLOW OF SLUDGE FROM SAID DECANTING ZONE TO SAID AERATION ZONE BELOW THE LOWER PORTION OF SAID LOWER WALL SECTION; AND MEANS DISPOSED WITHIN SAID AERATION ZONE ADJACENT SAID THIRD PASSAGEWAY FOR INTRODUCING AIR INTO SAID AERATION ZONE, SAID AIR INTRODUCING MEANS BEING DISPOSED BETWEEN SAID INCLINED LOWER WALL MEANS AND RIDGE MEANS AND BETWEEN THE SAID WATER INTRODUCING MEANS AND SAID RIDGE MEANS, WHEREBY FLOW OF WATER IS INDUCED UPWARDLY PAST SAID SECOND PASSAGEWAY TO EFFECT FLOW OF WATER THROUGH SAID SECOND PASSAGEWAY FROM SAID DECANTING ZONE TO SAID AERATION ZONE.