Tertiary filter

Details Tertiary filter Tertiary filter

B - Operations, Transporting

01

D

B01D 29/56 (2006.01) B01D 29/66 (2006.01)

Patent

CA 2599276

A filter cloth of long pile fiber bundles is used as a tertiary filter in a wastewater processing method. The filter may be backwashed by a rotating suction head which does not touch the filter cloth. A combination of countercurrent and horizontal flow dislodges entrained solids from the filter cloth. Mounting of the filter media as modular components permits increased capacity within a single tank while avoiding down time in changeover of filter media.

L'invention concerne un tissu filtrant de long faisceaux de fibres de velours utilisé comme filtre tertiaire dans un procédé de traitement des eaux usées. Le filtre peut être lavé au moyen d'une tête d'aspiration rotative ne venant pas en contact avec le tissu filtrant. Une combinaison de flux à contre-courant et horizontal déloge des solides entraînés du tissu filtrant. Le montage du milieu filtrant en tant que composants modulaires permet d'obtenir une capacité améliorée dans un réservoir unique tout en évitant un temps d'immobilisation lors du changement du milieu filtrant.

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