Maschinenfabrik Meyer Ag

Edmund Hartinger

Elias Julke

Harald Sandmann

Radioactive particles are removed from waste or process water and encapsulated by a filtration process wherein the water is filtered through a filter medium composed of a thermoplastic organic polymer. The filter cake so obtained is dried and converted to a solid encapsulating medium by the application of heat and/or pressure. The filter medium comprises, at least partially, a thermoplastic polymer which is wettable by water but non-swelling in water and has a melting point of 100.degree. to 300.degree. C.

Process for filtering and encapsulating radioactive particles

In a filtration process for filtering or clarifying aqueous suspensions of finely divided solid materials, a filter aid comprising polyolefin fibrids, e.g., polyethylene or polypropylene fibrids, is added to the suspension to be filtered. The filter aid comprising polyolefin fibrids which have been rendered hydrophilic may also be used to precoat a filter medium.

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Baden, Switzerland

Edmund Hartinger