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BE794877A
(fr)
*
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1972-02-04 |
1973-05-29 |
Elkem Spigerverket As |
Procede et appareil pour l'epuration des eaux usees industrielles
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GB1389322A
(en)
*
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1972-03-29 |
1975-04-03 |
Belgonucleaire Sa |
Process for purifying water
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US3819051A
(en)
*
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1972-08-31 |
1974-06-25 |
Amchem Prod |
Process for treating wastes containing chromates and/or complex iron cyanides
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US4012318A
(en)
*
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1972-09-22 |
1977-03-15 |
Kayabakoyo-Kabushiki-Kaisha |
Method for the recycle treatment of waste water from chromium plating
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US3931007A
(en)
*
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1972-12-19 |
1976-01-06 |
Nippon Electric Company Limited |
Method of extracting heavy metals from industrial waste waters
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US3960723A
(en)
*
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1972-12-26 |
1976-06-01 |
Ford Motor Company |
Magnetization of iron chromium system
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US4009101A
(en)
*
|
1973-03-29 |
1977-02-22 |
Kayabakogyo-Kabushiki-Kaisha |
Recycle treatment of waste water from nickel plating
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US3901805A
(en)
*
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1973-10-24 |
1975-08-26 |
Dow Badische Co |
Removing toxic chromium from industrial effluents
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1973-11-05 |
1976-04-26 |
System Ab Infoteknik |
Metod och anleggning for att kontinuerligt omvandla giftig metallhydroxid i slam till ett pulver eller en kornartad produkt, som foretredesvis er ogiftig
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US3959132A
(en)
*
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1974-10-25 |
1976-05-25 |
Galson Technical Services, Inc. |
Methods for removing fluoborates from aqueous media
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US4059514A
(en)
*
|
1975-01-24 |
1977-11-22 |
Elkem-Spigerverket A/S |
Method for purification of industrial waste water
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US4340473A
(en)
*
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1975-07-18 |
1982-07-20 |
Precipitator Corporation |
Apparatus for joint particulate recovery and liquid purification
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US4224148A
(en)
*
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1975-07-18 |
1980-09-23 |
Lindman William E |
Galvanic flow system for joint particulate recovery and liquid purification
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US4072605A
(en)
*
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1975-11-28 |
1978-02-07 |
Automated Medical Systems, Inc. |
Method of obtaining a precipitate of metallic ions from solutions containing low concentrations of metal salts
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US4025430A
(en)
*
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1976-01-12 |
1977-05-24 |
Amax Inc. |
Removal of metal ions from waste water
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US4170550A
(en)
*
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1978-03-30 |
1979-10-09 |
Koppers Company, Inc. |
Process for reducing aqueous effluents containing environmentally unacceptable compounds from a process for gasifying carbonaceous materials
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US4256577A
(en)
*
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1979-06-18 |
1981-03-17 |
Pq Corporation |
Two step removal of metal ions from effluents
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US4345996A
(en)
*
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1980-09-22 |
1982-08-24 |
Precipitator Corporation |
Conic reaction chamber for water decontamination
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US4434060A
(en)
|
1980-11-25 |
1984-02-28 |
General Electric Company |
Removal of heavy metals content
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US4465597B2
(en)
*
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1981-08-10 |
1997-07-01 |
Tetra Tech |
Treatment of industrial wastewaters
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DE3141885C2
(de)
*
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1981-10-22 |
1984-07-26 |
Wintershall Ag, 3100 Celle |
"Verfahren zum Einlagern von ganz oder teilweise wiederverwendbaren flüssigen Abfallstoffen in untertägige salzumschlossene Hohlräume bzw. Salzkavernen"
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GB8409410D0
(en)
*
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1984-04-11 |
1984-05-23 |
Hydro Int Ltd |
Water treatment
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US4765914A
(en)
*
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1984-08-15 |
1988-08-23 |
Solmat Systems Ltd. |
Method of and apparatus for reduction of turbidity in a body of fluid
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US4652378A
(en)
*
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1984-08-15 |
1987-03-24 |
Solmat Systems, Ltd. |
Method of and apparatus for reduction of turbidity in a body of fluid
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MY106682A
(en)
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1989-02-16 |
1995-07-31 |
Golconda Eng Anf Mining Services Pty Ltd |
Clarification process.
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(en)
*
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1990-08-08 |
1993-06-29 |
First Brands Corporation |
Process for treatment of aqueous soluions of polyhydric alcohols
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US5108623A
(en)
*
|
1990-11-19 |
1992-04-28 |
Gould Inc. |
Moving web filter assembly
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US5234603A
(en)
*
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1991-06-04 |
1993-08-10 |
Analytical Development Corporation |
Methods employing a zirconium salt for use in wastewater treatment
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DE4342620C1
(de)
*
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1993-12-14 |
1995-07-06 |
Starck H C Gmbh Co Kg |
Verfahren zur Herstellung von Metallhydroxiden
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US6607651B2
(en)
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1998-09-10 |
2003-08-19 |
Cws Parts Company |
Process and system for treating the discharge stream from an ion exchanger
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US20030209449A1
(en)
*
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2001-01-23 |
2003-11-13 |
Cws Parts Company |
Process and system for treating the discharge stream from an ion exchanger
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AU2004314102B2
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2003-12-19 |
2009-12-24 |
Craig M. Bethke |
In situ treatment process to remove metal contamination from groundwater
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CN110182922B
(zh)
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2019-06-24 |
2022-02-08 |
东北师范大学 |
含铬废水的处理方法
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CN113955838B
(zh)
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2021-09-23 |
2023-05-26 |
北京化工大学 |
一种电镀废渣和含铬重金属离子废液共处理的方法
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