BHS Pressure Plate Filters

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The BHS Pressure Plate Filter provides for thin-cake batch filtration, cake washing, drying, reslurry and automatic cake discharge as well as heel filtration in a pressure vessel. Cake can be discharged as dry cake, wet cake or a concentrated slurry. Units are available from 0.35 m² to full production models. Pressure Plate Filters are installed for clarification and recovery applications from liquids with low solids content ranging from 5% to PPM levels.

The BHS filter plates are sloped, formed into a plate-stack and designed for high liquid flow and low pressure drop. The sealed plate-stack eliminates bypass of solids or liquids. For cake discharge, two motors, typically 1 HP or less, gently vibrate the plate stack causing the solids to move along the plates to the vessel wall and out of the bottom. Gas-assist for cake discharge is also possible. The BHS design eliminates rotating plates, gear boxes and mechanical seals for a low maintenance operation.

Materials of construction are stainless steels and alloys. The filter media is a synthetic polymer or metal with a clean removal efficiency to 0.5 microns. As the cake builds up, removal efficiencies improve to less than 0.5 microns. Filter aid and activated carbon can also be used.