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Explain Conventional and high rate trickling filter
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CHARACTERISTICS Conventional Filter High Rate Trickling
Depth of filter media 1.8-3 m 0.9-2.5 m
Hydraulic Loading 1-4 10-40
Organic Loading 0.08-0.32 0.32-1.0
Recirculation system Usually not provided Recirculation ratio 0.5-3.0
Volume of filter bed 5 times high rate trickling filter 1/5 of conventional filter
Sloughing Intermittent Continuous
Land requirement More Area Less Area
Cost of operation More cost Less cost
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