Fluidized solids removal with pulsation

Details Fluidized solids removal with pulsation Fluidized solids removal with pulsation

2005-04-12

2005-04-12

Popovics, Robert James (Department: 1724)

Liquid purification or separation

Processes

Separating

C210S220000, C210S513000, C210S523000, C210S532100

Reexamination Certificate

active

06878295

ABSTRACT:
In a wastewater treatment process involving in-line removal of settled solids through a submerged solids collection manifold, the invention provides devices (and methods?) for resuspending concentrated solids using hydraulic pressure waves to improve removal through the collection manifold. The pressure waves are preferably created by cycling on/off signals to the solids collection pump at a user selected frequency. In some applications resuspension is provided by air scouring. The inventions result in improved solids removal and longer run times for the treatment processes with reduced need for mechanical agitators or scrapers.

REFERENCES:
patent: 4783272 (1988-11-01), Patterson
patent: 6797186 (2004-09-01), Hubenthal et al.
patent: 20040000526 (2004-01-01), Hubenthal et al.

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