Liquid purification or separation – Particulate material type separator – e.g. – ion exchange or... – With rehabilitation means
Patent
1992-05-27
1994-07-12
Cintins, Ivars
Liquid purification or separation
Particulate material type separator, e.g., ion exchange or...
With rehabilitation means
210275, 210293, B01D 2412, B01D 2422
Patent
active
053286081
ABSTRACT:
An improvement for a filter system which distributes backwash fluid uniformly throughout a bed of granular media is disclosed. The filter system includes a distributor positioned beneath and supporting the media, with the distributor having a plurality of walls which define a primary horizontal conduit and a secondary horizontal conduit. At least one of the walls which define the conduits contains metering orifices that connect the primary conduit to the secondary conduit. The improvement includes at least one baffle positioned within the primary conduit to facilitate uniform flow of backwash fluid from the primary conduit through the metering orifices into the secondary conduit. The baffle may comprise flanges extending from the walls which define the primary conduit normal to a fluid flow direction in the conduit. Alternatively, the baffle may include posts positioned within the conduit. The baffle generally reduces flow velocity near the wall which contains the metering orifices to enhance distribution of backwash fluids from the primary conduit to the secondary conduit. The baffle is preferably located near an inlet for the primary conduit, which is the high energy portion of the conduit. The invention also includes tubular inserts which may be placed in the metering orifices to assist backwash fluid flow in making the 90 degree turn from the primary conduit into the metering orifices.
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Herbert E. Hudson, Jr. publication in the textbook "Water Clarification Processes", Chapter 15, 1981.
Bergmann Eugen O.
Brown Marvin A.
Cintins Ivars
The F.B. Leopold Co., Inc.
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