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Sincerely Your, SURF3D MORE INFORMATION ABOUT 3D MODELS : A ROTATING BIOLOGICAL CONTACTOR OR RBC IS A BIOLOGICAL FIXED-FILM TREATMENT PROCESS USED IN THE SECONDARY TREATMENT OF WASTEWATER FOLLOWING PRIMARY TREATMENT.
THE PRIMARY TREATMENT PROCESS INVOLVES REMOVAL OF GRIT, SAND AND COARSE SUSPENDED MATERIAL THROUGH A SCREENING PROCESS, FOLLOWED BY SETTLING OF SUSPENDED SOLIDS. THE RBC PROCESS ALLOWS THE WASTEWATER TO COME IN CONTACT WITH A BIOLOGICAL FILM IN ORDER TO REMOVE POLLUTANTS IN THE WASTEWATER BEFORE DISCHARGE OF THE TREATED WASTEWATER TO THE ENVIRONMENT, USUALLY A BODY OF WATER (RIVER, LAKE OR OCEAN). A ROTATING BIOLOGICAL CONTACTOR IS A TYPE OF SECONDARY (BIOLOGICAL) TREATMENT PROCESS. IT CONSISTS OF A SERIES OF CLOSELY SPACED, PARALLEL DISCS MOUNTED ON A ROTATING SHAFT WHICH IS SUPPORTED JUST ABOVE THE SURFACE OF THE WASTEWATER. MICROORGANISMS GROW ON THE SURFACE OF THE DISCS WHERE BIOLOGICAL DEGRADATION OF THE WASTEWATER POLLUTANTS TAKES PLACE.