Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1992-02-21
1993-12-28
McCarthy, Neil M.
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
210724, 210726, 210727, 210732, 210750, 210751, 210772, 210776, 210906, 210912, 210919, C02F 162
Patent
active
052736610
ABSTRACT:
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.
REFERENCES:
patent: 2797143 (1957-06-01), Arendale et al.
patent: 3013978 (1961-12-01), Rosinski
patent: 3205588 (1965-09-01), Oetjen et al.
patent: 3567018 (1971-03-01), Moler
patent: 3705648 (1972-12-01), Arvanitakis
patent: 3890244 (1975-06-01), Carlin
patent: 4122028 (1978-10-01), Iffland et al.
patent: 4269706 (1981-05-01), Sondermann
patent: 4347141 (1982-08-01), Rothberg
patent: 4350620 (1982-09-01), Hartinger et al.
patent: 4363757 (1982-12-01), Koster et al.
patent: 4377508 (1983-03-01), Rothberg
patent: 4442028 (1984-10-01), Wolf et al.
patent: 4575427 (1986-03-01), Ysern de Arce
patent: 4582637 (1986-04-01), Kirkham
patent: 4705672 (1987-11-01), McCurdy et al.
patent: 4770783 (1988-09-01), Gustavsson et al.
patent: 4800042 (1989-01-01), Kurumada et al.
patent: 4804498 (1989-02-01), Mizuno et al.
patent: 4952339 (1990-08-01), Temus et al.
patent: 4956157 (1990-09-01), Nasu
patent: 4961862 (1990-10-01), Janecek
Harley Willie W.
Langton Christine A.
Martin Hollis L.
Pickett John B.
Dixon Harold M.
McCarthy Neil M.
Moser William R.
Tumm Brian R.
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