Patent ID: 6306310
Filing Date: 2001-10-23
Classification: B01D

Abstract:
A concurrent backwash distribution apparatus, comprising:a filter having a filter tank;a flume positioned adjacent the filter tank and in fluid communication with the filter tank, the flume having a floor and a sidewall; andan upright L-shaped partition positioned in the flume so as to define an auxiliary flume between the upright L-shaped partition and the filter tank, the auxiliary flume in fluid communication with the flume and the filter tank, the upright L-shaped partition including a vertical portion and a horizontal portion, and the vertical portion of the upright L-shaped partition defining at least one flume liquid metering orifice positioned to convey liquid from the flume to the auxiliary flume during concurrent gas/liquid backwash operation in the filter,wherein the horizontal portion is located below a gas and liquid interface present in the flume during operation of the concurrent backwash distribution apparatus, andwherein the horizontal portion is spaced above the floor of the flume.