Method of treatment of effluent stream

Liquid purification or separation – Processes – Ion exchange or selective sorption

Reexamination Certificate

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C210S669000, C210S725000, C210S727000

Reexamination Certificate

active

11182349

ABSTRACT:
A method for treating an effluent stream containing material which it is desired to remove from the effluent stream comprises treating the effluent stream with a solution of an acid and a first polymer to reduce the pH of the thus-treated stream to a range of about 5.5 to about 6.5 and to form a precipitate, treating the thus-treated stream with a second polymer to flocculate the precipitate, filtering the thus-treated effluent to remove the flocculated precipitate, treating the filtered effluent with at least one of a cationic resin, an anionic resin and carbon filtration, and discharging the resultant stream into a public waste treatment facility. Another method for treating an effluent stream having a pH in the range of about pH 2 to about pH 6.5 containing material which it is desired to remove from the effluent stream comprises treating the effluent stream with a solution of acid and hydrated polymer to form a precipitate, filtering the precipitate, collecting the filtered solids, disposing of the filtered solids, passing the resulting filtrate through at least one of an anionic exchange device, a cationic exchange device and a carbon filter, and discharging the resultant stream into a public waste treatment facility.

REFERENCES:
patent: 3912625 (1975-10-01), Case et al.
patent: 4007115 (1977-02-01), Howe
patent: 4125465 (1978-11-01), Turovshy et al.
patent: 4198299 (1980-04-01), Ewing et al.
patent: 4200695 (1980-04-01), Chong et al.
patent: 4303533 (1981-12-01), Fremont
patent: 4310424 (1982-01-01), Fremont et al.
patent: 4340487 (1982-07-01), Lyon
patent: 4609469 (1986-09-01), Keoteklian
patent: 4770788 (1988-09-01), Vignola
patent: 5223144 (1993-06-01), Woyciesjes et al.
patent: 5288737 (1994-02-01), Krieger
patent: 5385646 (1995-01-01), Holiday
patent: 5423981 (1995-06-01), Krieger
patent: 5451324 (1995-09-01), Gehin et al.
patent: 5454955 (1995-10-01), Albrecht et al.
patent: 5641407 (1997-06-01), Xiong
patent: 5725779 (1998-03-01), Mallon et al.
patent: 5733462 (1998-03-01), Mallon et al.
patent: 5738794 (1998-04-01), Mallon et al.
patent: 5830364 (1998-11-01), Bleakley
patent: 5885032 (1999-03-01), Mallon et al.
patent: 5889097 (1999-03-01), Mallon et al.
patent: 5948275 (1999-09-01), Djafer et al.
patent: 5985992 (1999-11-01), Chen
patent: 6013708 (2000-01-01), Mallon et al.
patent: 6040376 (2000-03-01), Mallon et al.
patent: 6059978 (2000-05-01), Pacifici et al.
patent: 6221956 (2001-04-01), Chen
patent: 6228283 (2001-05-01), Turcotte et al.
patent: 6245121 (2001-06-01), Lamy et al.
patent: 6254779 (2001-07-01), Jeffery et al.
patent: 6270677 (2001-08-01), Gopal et al.
patent: 6280630 (2001-08-01), Ramsay
patent: 6325936 (2001-12-01), Niijima
patent: 6440307 (2002-08-01), Philip et al.
patent: 6471874 (2002-10-01), Yamamoto et al.
patent: 6573336 (2003-06-01), Inagaki et al.
patent: 6635182 (2003-10-01), Coleman, Jr.
patent: 6733662 (2004-05-01), Pollack
patent: 6793823 (2004-09-01), Hubenthal et al.
patent: 6797183 (2004-09-01), Fyson
patent: 2003/0160002 (2003-08-01), Inagaki et al.
patent: 2003/0164331 (2003-09-01), Ingeric
patent: 2004/0026317 (2004-02-01), Hubenthal et al.
patent: 2004/0050796 (2004-03-01), Coleman, Jr.
“Water & Wastewater Chemicals”, Cytec Industries Inc. 2001, 4 pages.
“Water Treating Chemicals”, Cytec.com, Cytec Industries Inc., 2003, 2 pages.
“SUPERFLOC® coagulants, Liquid, Resin Amine, cationic: C-500 Series”, Cytec Industries Inc., 1997, 2 pages.
“Floculants SUPERFLOC®, Polyacrylamide (PAM) cationique en emulsion: Serie SD 2000”, Cytec Industries Inc. 1998, 2 pages.

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