Trickling Filter Process - Advantages in Comparison to Activated Sludge (Video Animation)
Trickling filters, also known as biofilters, are normally a fixed-bed, biological reactor operating in aerobic conditions. In the filter, microorganisms are attached to the inter packing material which was composed of rocks or gravel in the past and is nowadays a wide range of plastic fill media. Fill media support is placed on the tank bottom with wide openings that allow good air and water mixing...
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Cover image: John Rostron / Benfleet Sewage Treatment Plant: Filter Bed / CC BY-SA 2.0