Microorganism-removing filter medium having high isoelectric...

Details Microorganism-removing filter medium having high isoelectric... Microorganism-removing filter medium having high isoelectric...

B - Operations, Transporting

01

D

B01D 39/20 (2006.01) B01D 24/00 (2006.01) C02F 1/00 (2006.01) C12M 1/12 (2006.01)

Patent

CA 2462815

A filter medium capable of removing microorganisms from a fluid such as water. The filter medium includes particles of activated carbon, particles of a substantially insoluble inorganic material having an isoelectric point greater than the fluid being filtered. A low melt index binder, preferably with a melt. index of less than about 1 gram per 10 minutes, binds the particles of activated carbon and particles of inorganic material, such that the binder will become tacky at elevated temperatures without becoming sufficiently liquid to substantially wet the particles of activated carbon and inorganic material.

Il s'agit d'une matière filtrante pouvant supprimer les microorganismes d'un fluide, comme l'eau. Cette matière comprend des particules de charbon actif qui sont constituées de matière inorganique en grande partie insoluble et dont le point isoélectrique est supérieur à celui du fluide filtré. Un liant à faible indice de fluidité, de préférence inférieur à environ 1 gramme par 10 minutes, lie les particules de charbon actif et les particules de matière inorganique. Ainsi, le liant devient poisseux à haute température, sans devenir suffisamment liquide pour mouiller sensiblement les particules de charbon actif et de matière inorganique.

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