Index >> Waste Water Microbiology >>Submerged Aerobic Filters

Submerged Aerobic Filters
This system consists of partially or totally submerged biological support material and improves the efficiency of biological filtration. In submerged or flooded aerobic filter, effluent flows down through a bed of small natural or plastic media. Air is injected into the base of bed. Hence waste water can be applied at a much higher rate than conventional filters. There is a second filtration stage below the injection point where removal of solids generated in the upper aerobic mixed zone occurs. Solids, on accumulation in the lower filter stage, reduce a critical stage in clearing by backwashing. Wash water is returned to the treatment plant for settlement.