PRETREATMENT PROCESS AND WORK FOR SEPARATING FOAM FROM WASTEWATER AND INDUSTRIAL EFFLUENTS

摘要

THE STRUCTURE SHAPES A TANK 12 OR A BASIN WITH A CONDUIT 22 FOR THE INLET OF LIQUID LOADED WITH FOAM OR SKIMMING AND ANY SLUDGE AT AN END. THE INCOMING LIQUID CURRENT IS DISTRIBUTED, UNIFORMED AND TRANQUILIZED BY A DIFFUSER 36 AT THE ENTRY, FOLLOWED BY A PERFORATED SCREEN 44. THE CURRENT THROUGH THE TANK HORIZONTALLY WHILE THE FOAM CONTAINED MOUNTS ON SURFACE 50 AND THE SLUDGE DEPOSITS ON THE BOTTOM 48. THE SLUDGE 28 IS DRAINED THROUGH A PIPE 32, THE LIQUID CLEARS OF THE FOAM AND SLUDGE LEAVES THROUGH A PIPE 30 AND THE FOAM 26 PASSES OVER A CROWNING DAM 58, 60 IN A COMPARTMENT 62 FROM WHICH IT IS DRAINED BY PUMPING. A SECOND 56 SCREEN AVAILABLE VERTICALLY THROUGH THE TANK STABILIZES THE FLOW IN THE OUTLET AREA.