Patent ID: 6833077
Filing Date: 2004-12-21
Classification: B01D

Abstract:
A precoat removal, regeneration and renewal system for a precoat filter having a plurality of filter discs, each filter disc having a first side and a second side, both sides bearing filter media, the system comprising:a plurality of spray nozzles, each first side and each second side of each filter disc of the plurality having at least one spray nozzle positioned to spray a fluid on a surface thereof at a location on a rising side of each filter disc as the pluraliy of filter discs is rotated about a defined axis; spray piping coupled to the spray nozzles of the plurality; and at least one valve coupled with feed piping in communication with the spray piping wherein the at least one valve and the feed piping are configured, in combination, to permit selection between a first flow of a relatively lower pressure fluid and a second flow of a relatively higher pressure fluid to be conveyed through the feed piping through the spray piping to the plurality of spray nozzles.