Sewage treatment process and apparatus
Abstract
Abstract THE PROCESS OF THIS INVENTION DEALS WITH THE AEROBIC TREATMENT OF SEWAGE WHEREIN A SURFACE TYPE AERATOR MIXES THE TANK CONTENTS AND INCORPORATES AIR INTO THE MIXED LIQUOR SO THAT MICROORGANISMS MAY EFFECTIVELY REMOVE BIOCHEMICAL OXYGEN DEMAND AND SLUDGE IS RETURNED FROM THE SETTLING ZONE TO THE AERATION ZONE BY DELIVERY TO A HOLDING ZONE FROM WHICH IT FLOWS, AS BY GRAVITY, TO AN OUTLET POSITINED ADJACENT THE INTAKE OF THE SURFACE TYPE AERATOR AT WHICH POINT IT MIXES WITH INFLUENT SEWAGE. IN THE PREFERRED EMBODIMENT, THE APPARATUS COMPRISES AN AERATION TANK, A SURFACE TYPE AERATOR, A SETTLING TANK, A SLUDGE REMOVAL MEANS, A HOLDING TANK ADAPTED TO RECEIVE SLIDGE DISCHARGED FROM THE SETTLING TANK, CONDUIT MEANS FOR TRANSFER OF SLUDGE FORM THE HOLDING TANK TO THE VICINITY OF THE AERATOR INTAKE, SAID HOLDING TANK BEING ELEVATIONALLY POSITIONED SO THAT FLOW OF SLUDGE THROUGH THE CONDUIT MEANS IS AT LEAST IN PART A GRAVITY FLOW.
Inventors
- 👤 Peter J Neuspiel
Bibliographic Details
Claims Analysis
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