Cleaning and liquid contact with solids – Processes – Including regeneration – purification – recovery or separation...
Patent
1995-05-26
1996-12-31
Warden, Jill
Cleaning and liquid contact with solids
Processes
Including regeneration, purification, recovery or separation...
134 251, 134 40, 210608, 435264, B08B 704, C02F 302
Patent
active
055890040
ABSTRACT:
A method for removing a contaminating material from a combination material containing the contaminating material and reusable material includes placing the combination material in a tank having cleaning fluid therein capable of separating the contaminating material from the reusable material, the cleaning fluid containing oxygen consuming microorganisms capable of also consuming at least a portion of the contaminating material; circulating oxygen through the cleaning fluid so as to provide oxygen for consumption by the microorganisms; circulating the cleaning fluid around the combination material within the tank whereby cleaning fluid will cause the contaminating material to separate from the reusable material and will cause at least some of the contaminating material to float on the top surface of the cleaning fluid within the tank; drawing off the contaminating material which is floating on the top surface of the cleaning fluid and removing it from the tank; and recirculating the cleaning fluid through the tank through an outlet opening therein which is remote from and lower than the skimming opening.
REFERENCES:
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patent: 5451320 (1995-09-01), Wang et al.
patent: 5487907 (1996-01-01), Drown et al.
Herzog Larry R.
Karpik Merideth L.
Lashmett Brent J.
Lashmett Doug C.
Lashmett H. W.
B&S Research, Inc.
Chaudhry Saeed
Warden Jill
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