System for filtering water or wastewater

Details System for filtering water or wastewater System for filtering water or wastewater

2011-04-19

2011-04-19

Hruskoci, Peter A (Department: 1776)

Liquid purification or separation

Recirculation

Serially connected distinct treating or storage units

C210S205000, C210S220000, C210S221100, C210S265000, C210S519000, C210S522000

Reexamination Certificate

active

07927485

ABSTRACT:
A filter system for filtering water and/or wastewater including a sludge blanket clarifier for removing at least some impurities from influent. The sludge blanket clarifier includes a clarifier compartment in which a sludge blanket is to be formed to remove at least some impurities from influent directed into the clarifier compartment and through the sludge blanket. The clarifier compartment has at least one vertical sidewall extending from a bottom of the clarifier compartment to a top of the clarifier compartment. The clarifier compartment has a cross-sectional area that varies over at least a portion of a height of the clarifier compartment such that the velocity of influent just prior to entry into the sludge blanket is less than the velocity of influent just after entering the clarifier compartment.

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Infilco Degremont “Superpulsator® Clarifier”; pp. 1 to 4, Dec. 2002.
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High Rate Pulsed Sludge Blanket Clarifier Performance on Rivers and Reservoirs with Widely Different Raw Water Characteristic in Texas and United States, pp. 1 to 13.

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