公开(公告)号：US3846305A

公开(公告)日：1974-11-05

申请号：US24002472

申请日：1972-03-31

Applicant: SCHREIBER A ,  SCHREIBER B ,  SCHREIBER E

Inventor： SCHREIBER A ,  SCHREIBER E ,  SCHREIBER B

IPC: B01D53/84 ,  B29D99/00 ,  C02F1/52 ,  C02F3/04 ,  C02F3/10 ,  C02F3/12 ,  B01D35/00

CPC classification number: C02F3/10 ,  B01D24/12 ,  B01D24/4678 ,  B01D2201/087 ,  C02F3/04 ,  Y02W10/15

Abstract: 1. TRICKLING FILTER FOR THE FILTRATION AND BIOLOGICAL PURIFICATION OF CONTAMINATED WATER COMPRISING, AT LEAST ONE WATER-TIGHT TANK CONTAINING FILLER MATERIAL CONSISTING OF WEAR-RESISTING MATERIAL HAVING A SPECIFIC GRAVITY OF NOT GREATER THAN 1, AND BEING IN THE FORM OF SMALL ELEMENTS EACH HAVING A GRAIN SIZE OF LESS THAN 6 MM, SAID TANK BEING PROVIDED WITH STORAGE DISTRIBUTOR DEVICES NEAR THE TOP THEREOF FOR DISTRIBUTING CONTAMINATED WATER OVER SAID FILLER MATERIAL, AND SAID TANK HAVING A BOTTOM WALL SLOPING TOWARD A DISCHARGE CHAMBER PROVIDED THEREBELOW INTO WHICH THE WATER PURIFIED AFTER HAVING TRICKLED THROUGH SAID FILLER MATERIAL IS DIVERTED, AERATION MEANS NEAR THE BOTTOM OF SAID TANK FOR AERATING SAID FILLER MATERIAL UPWARDLY THERETHROUGH WHILE THE CONTAMINATED WATER TRICKLES THROUGH SAID FILLER MATERIAL, MEANS NEAR THE BOTTOM OF SAID TANK FOR FILLING SAID TANK WITH RISING WATER UPWARDLY THERETHROUGH FOR CLEANSING SAID FILLER MATERIAL OF ANY SLUDGE OR MICROORGANISMS COVERING SAID ELEMENTS, THE INCOMING RISING WATER EFFECTIVELY BUOYING UP SAID FILLER MATERIAL IN SAID TANK, MEANS ON SAID TANK FOR CIRCULATING SAID FILLER MATERIAL WITH THE RISING WATER AND CONTAMINATED WATER WITHIN SAID TANK, MEANS ON THE SIDE WALL OF SAID TANK FOR THE REMOVAL OF THE SLUDGE AND MICROORGANISMS COVERING SAID ELEMENTS, GRID MEANS LOCATED ABOVE SAID BOTTOM WALL FOR PREVENTING SAID FILLER MATERIAL FROM DISCHARGING INTO SAID CHAMBER, AND FURTHER GRID MEANS IN SAID TANK ADJACENT SAID REMOVAL MEANS FOR PREVENTING SAID FILTER MATERIAL FROM BEING REMOVED THERETHROUGH.