Table 7471 Filtration Methods For Waste Treatment Applications

Filtration Application

Filter Design Selected

Separation of bacterial slurry, activated sludge, or submicron inorganic slurry, 0.5 to 5% solids, into unwashed solids plus cloudy filtrate Separation of digested primary sludge into wet solids plus cloudy filtrate Separation of valuable chemical liquid from waste solids, with extensive cake washing Separation of slurry into clean liquid plus solids mixed with filter aid Separation of slurry into clear liquid plus heavy slurry of separated solids

Continuous rotary vacuum belt filter with special cake discharge method; continuous rotary pressure filter

Coil filter, belt filter

Batch pressure filters with or without automatic cake discharge Rotary drum or batch-type pre-coat filter Deep-bed filter with backwash

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