Waste treatment for phosphorous removal
First Claim
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1. A COMBINED CHEMICAL AND BIOLOGICAL PROCESS FOR TREATING LIQUID ORGANIC WASTE MATERIAL CONTAINING PHOSPHOROUS, TO DECREASE THE PHOSPHORUS CONTENT TO A PREDETERMINED MINIMUM CONCENTRATION, COMPRISING THE STEPS OF DOSING THE RAW WASTE MATERIAL WITH A LIMITED AMOUNT OF A CHEMICAL PRECIPITANT FOR PHOSPHORUS SUBSTANTIALLY LESS THAN THE AMOUNT REQUIRED TO REMOVE PHOSPHORUS TO THE PREDETERMINED CONCENTRATION TO FORM AN INSOLUBLE PRECIPITATE OF PHOSPHORUS;
- SUBJECTING THE DOSED WASTE MATERIAL TO A FIRST SEDIMENTATION TO SEPARATE THE MATERIAL INTO SLUDGE AND AN EFFLUENT;
AERATING THE EFFLUENT TO PRODUCE PHOSPHORUS CONSUMING CELL GROWTH, SUBJECTING THE AERATED EFFLUENT TO A SECOND SEDIMENTATION TO REMOVE THE PHOSPHORUS-BEARING BIOLOGICAL SLUDGE AND PRODUCE A FINAL EFFLUENT OF THE PREDETERMINED MINMIUM PHOSPHORUS CONCENTRATION.
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1 Claim
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1. A COMBINED CHEMICAL AND BIOLOGICAL PROCESS FOR TREATING LIQUID ORGANIC WASTE MATERIAL CONTAINING PHOSPHOROUS, TO DECREASE THE PHOSPHORUS CONTENT TO A PREDETERMINED MINIMUM CONCENTRATION, COMPRISING THE STEPS OF DOSING THE RAW WASTE MATERIAL WITH A LIMITED AMOUNT OF A CHEMICAL PRECIPITANT FOR PHOSPHORUS SUBSTANTIALLY LESS THAN THE AMOUNT REQUIRED TO REMOVE PHOSPHORUS TO THE PREDETERMINED CONCENTRATION TO FORM AN INSOLUBLE PRECIPITATE OF PHOSPHORUS;
- SUBJECTING THE DOSED WASTE MATERIAL TO A FIRST SEDIMENTATION TO SEPARATE THE MATERIAL INTO SLUDGE AND AN EFFLUENT;
AERATING THE EFFLUENT TO PRODUCE PHOSPHORUS CONSUMING CELL GROWTH, SUBJECTING THE AERATED EFFLUENT TO A SECOND SEDIMENTATION TO REMOVE THE PHOSPHORUS-BEARING BIOLOGICAL SLUDGE AND PRODUCE A FINAL EFFLUENT OF THE PREDETERMINED MINMIUM PHOSPHORUS CONCENTRATION.
- SUBJECTING THE DOSED WASTE MATERIAL TO A FIRST SEDIMENTATION TO SEPARATE THE MATERIAL INTO SLUDGE AND AN EFFLUENT;
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