Method for processing aqueous wastes

Patent · Thu Dec 31 23:00:00 EST 1992

OSTI ID:869096

Pickett, John B ^[1]; Martin, Hollis L ^[2]; Langton, Christine A ^[3]; Harley, Willie W ^[4]

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1. 3922 Wood Valley Dr., Aiken, SC 29803
2. Rt. 1, Box 188KB, McCormick, SC 29835
3. 455 Sumter St. SE., Aiken, SC 29801
4. 110 Fairchild St., Batesburg, SC 29006

A method for treating waste water such as that from an industrial processing facility comprising the separation of the waste water into a dilute waste stream and a concentrated waste stream. The concentrated waste stream is treated chemically to enhance precipitation and then allowed to separate into a sludge and a supernate. The supernate is skimmed or filtered from the sludge and blended with the dilute waste stream to form a second dilute waste stream. The sludge remaining is mixed with cementitious material, rinsed to dissolve soluble components, then pressed to remove excess water and dissolved solids before being allowed to cure. The dilute waste stream is also chemically treated to decompose carbonate complexes and metal ions and then mixed with cationic polymer to cause the precipitated solids to flocculate. Filtration of the flocculant removes sufficient solids to allow the waste water to be discharged to the surface of a stream. The filtered material is added to the sludge of the concentrated waste stream. The method is also applicable to the treatment and removal of soluble uranium from aqueous streams, such that the treated stream may be used as a potable water supply.

• Research Organization: WESTINGHOUSE SAVANNAH RIVER CO
• DOE Contract Number: AC09-89SR18035
• Assignee: Pickett, John B. (3922 Wood Valley Dr., Aiken, SC 29803);Martin, Hollis L. (Rt. 1, Box 188KB, McCormick, SC 29835);Langton, Christine A. (455 Sumter St. SE., Aiken, SC 29801);Harley, Willie W. (110 Fairchild St., Batesburg, SC 29006)
• Patent Number(s): US 5273661
• OSTI ID: 869096
• Country of Publication: United States
• Language: English

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