Filtration > systems

Micropore Technologies microfilters can be configured in many ways: as small-scale batch separations for laboratory use, moderate self-contained and skid mounted modular size and process-scale use in production. The filters can be used for clarifying, fractionation of different particle size, thickening of suspensions and cake filtration. The systems used include: crossflow, dead-end, tubular, flat sheet and multiple parallel sheets with imposed surface shear.

In seeded microfiltration finely divided adsorption and ion exchange particles (less than 100 microns) provide very quick adsorption and complexation removing dissolved species. Microfiltration is used because the small particles can't be used in packed columns as the pressure drop is too high.

Adsorption and ion exchange beads (200 microns and bigger) can be used in packed columns, but require pre-filtration to remove feed solution colloidal solids - or the colloidal solids will deposit inside the packed column.

Seeded microfiltration has the benefits of finely divided adsorption and ion exchange and does not require prefiltration of colloidal suspended solids in the solution to be treated. The Micropore Filtration media is selected to retain the adsorption and ion exchange media, whilst allowing the passage of colloidal suspended solids.

Typically, the finely divided adsorption and ion exchange, or even catalyst, particles are used in a crossflow loop - as illustrated above.

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