ES8603355A1 - Un metodo para purificar soluciones acuosas - Google Patents

Un metodo para purificar soluciones acuosas

Info

Publication number
ES8603355A1
ES8603355A1 ES535544A ES535544A ES8603355A1 ES 8603355 A1 ES8603355 A1 ES 8603355A1 ES 535544 A ES535544 A ES 535544A ES 535544 A ES535544 A ES 535544A ES 8603355 A1 ES8603355 A1 ES 8603355A1
Authority
ES
Spain
Prior art keywords
stage
added
aqueous solutions
sepd
contg
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES535544A
Other languages
English (en)
Spanish (es)
Other versions
ES535544A0 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boliden AB
Original Assignee
Boliden AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20352439&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES8603355(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Boliden AB filed Critical Boliden AB
Publication of ES535544A0 publication Critical patent/ES535544A0/es
Publication of ES8603355A1 publication Critical patent/ES8603355A1/es
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/103—Arsenic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00—Liquid purification or separation
    • Y10S210/902—Materials removed
    • Y10S210/906—Phosphorus containing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00—Liquid purification or separation
    • Y10S210/902—Materials removed
    • Y10S210/911—Cumulative poison
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00—Liquid purification or separation
    • Y10S210/902—Materials removed
    • Y10S210/911—Cumulative poison
    • Y10S210/912—Heavy metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00—Liquid purification or separation
    • Y10S210/902—Materials removed
    • Y10S210/911—Cumulative poison
    • Y10S210/912—Heavy metal
    • Y10S210/914—Mercury

Landscapes

  • Chemical & Material Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Detergent Compositions (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Treatment Of Sludge (AREA)
ES535544A 1983-09-12 1984-08-30 Un metodo para purificar soluciones acuosas Expired ES8603355A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8304858A SE452307B (sv) 1983-09-12 1983-09-12 Forfarande for rening av fororenade vattenlosningar innehallande arsenik och/eller fosfor

Publications (2)

Publication Number Publication Date
ES535544A0 ES535544A0 (es) 1985-12-16
ES8603355A1 true ES8603355A1 (es) 1985-12-16

Family

ID=20352439

Family Applications (1)

Application Number Title Priority Date Filing Date
ES535544A Expired ES8603355A1 (es) 1983-09-12 1984-08-30 Un metodo para purificar soluciones acuosas

Country Status (15)

Country Link
US (1) US4566975A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0139622B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS60143893A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) ATE31289T1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BR (1) BR8404502A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1253981A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3468010D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES8603355A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GR (1) GR80306B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
MA (1) MA20224A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
MX (1) MX7707E (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
PT (1) PT79186B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (1) SE452307B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
YU (1) YU43855B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ZA (1) ZA846790B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0195297B1 (de) * 1985-03-06 1991-05-02 Karl Clemens Käuffer Verfahren und Vorrichtung zum Schliessen der Kreisläufe bei der Reinigung von Wasser und Abwasser
US4724084A (en) * 1986-03-28 1988-02-09 The Boeing Company System for removing toxic organics and metals from manufacturing wastewater
DE3633066C2 (de) * 1986-09-29 1993-12-02 Fraunhofer Ges Forschung Verfahren zum Entfernen von Arsen aus Prozeßwässern der Glasindustrie
ZA883753B (en) * 1987-06-18 1989-03-29 Bethlehem Steel Corp Process for chemical stabilization of heavy metal bearing dusts and sludge,such as eaf dust
US5259697A (en) * 1987-06-18 1993-11-09 Bethlehem Steel Corporation Composition and process for forming low permeability barriers for waste disposal sites
US4840671A (en) * 1987-06-18 1989-06-20 Bethlehem Steel Corporation Process for chemical stabilization of heavy metal bearing dusts and sludges as EAF dust
US4814091A (en) * 1987-06-29 1989-03-21 The United States Of America As Represented By The United States Department Of Energy Process for removing metals from water
SE465513B (sv) * 1988-10-11 1991-09-23 Boliden Contech Ab Foerfarande foer rening av foerorenade vattenloesningar
US4940549A (en) * 1989-01-31 1990-07-10 Santina Water Company Method for removing toxic metals from agricultural drain water
DE3908491A1 (de) * 1989-03-15 1990-09-20 Fraunhofer Ges Forschung Verfahren zur entfernung von arsen und/oder antimon aus loesungen, die arsen und/oder antimon als anionische fluorokomplexe enthalten
EP0389661B1 (de) * 1989-03-31 1993-11-10 Walhalla-Kalk Entwicklungs- und Vertriebsgesellschaft mbH Verfahren zur Abtrennung von Arsen aus Abwässern
CA1333106C (en) * 1989-05-24 1994-11-15 Serena Jane Domvile Process for removal of inorganic and cyanide contaminants from wastewater
US5039428B1 (en) * 1990-03-05 1994-04-12 Tetra Technologoes Inc Waste water treatment process using improved recycle of high density sludge
US5128047A (en) * 1990-04-20 1992-07-07 Rhone-Poulenc Inc. Sequential separation of metals by controlled pH precipitation
US5252003A (en) * 1990-10-29 1993-10-12 International Technology Corporation Attenuation of arsenic leaching from particulate material
JPH04210293A (ja) * 1990-12-12 1992-07-31 Kubota Corp 排水の水銀回収方法及び水銀回収装置
US5543049A (en) * 1991-02-04 1996-08-06 Delman R. Hogen Microbial mediated water treatment
US5545331A (en) * 1991-04-08 1996-08-13 Romar Technologies, Inc. Recycle process for removing dissolved heavy metals from water with iron particles
US5976383A (en) * 1991-04-08 1999-11-02 Romar Technologies, Inc. Recycle process for removing dissolved heavy metals from water with aluminum particles
US5200082A (en) * 1991-07-02 1993-04-06 Santina Water Company Method for removing toxic substances from industrial and agricultural waste water
US5368703A (en) * 1992-05-12 1994-11-29 Anco Environmental Processes, Inc. Method for arsenic removal from wastewater
US5262063A (en) * 1992-05-14 1993-11-16 Elf Atochem North America, Inc. Multiple-stage precipitation process for heavy metals in aqueous solution
US5348662A (en) * 1992-05-14 1994-09-20 Elf Atochem North America, Inc. Process for removing heavy metals from aqueous solutions
AU4669993A (en) * 1992-07-16 1994-02-14 Delman R. Hogen Microbial mediated method for soil and water treatment
SE508836C2 (sv) * 1993-04-20 1998-11-09 Boliden Contech Ab Förfarande för rening av industriellt avloppsvatten genom utfällning i två steg
FI97288C (fi) * 1993-08-26 1996-11-25 Kemira Oy Jätevesilietteen käsittelymenetelmä
US5443622A (en) * 1994-02-28 1995-08-22 Kennecott Corporation Hydrometallurgical processing of impurity streams generated during the pyrometallurgy of copper
US5616168A (en) * 1994-02-28 1997-04-01 Kennecott Utah Copper Corporation Hydrometallurgical processing of impurity streams generated during the pyrometallurgy of copper
JPH09192677A (ja) * 1996-01-16 1997-07-29 Mitsubishi Heavy Ind Ltd ひ素含有廃水の処理方法
US5762891A (en) * 1996-02-27 1998-06-09 Hazen Research, Inc. Process for stabilization of arsenic
US6254783B1 (en) 1996-03-11 2001-07-03 Stephen R. Wurzburger Treatment of contaminated waste water
US5728295A (en) * 1996-04-19 1998-03-17 Fuji Hunt Photographic Chemicals, Inc. Apparatus for removing metal ions and/or complexes containing metal ions from a solution
ATE195351T1 (de) 1996-05-20 2000-08-15 Apex Residue Recovery Inc Aufarbeitung von flugstaub/apc reststoffen einschliesslich die abtrennung von bleisälzen
US6117333A (en) * 1997-04-22 2000-09-12 Union Oil Company Of California Removal of hydrocarbons, mercury and arsenic from oil-field produced water
US6387276B1 (en) * 1997-06-19 2002-05-14 The University Of Connecticut Immobilization of inorganic arsenic species using iron
US6042721A (en) * 1997-07-23 2000-03-28 Fabco Industries, Inc. Effluent treatment apparatus
US6251283B1 (en) * 1999-09-03 2001-06-26 Perma-Fix Environmental Services, Inc. Methods for removing selenium from a waste stream
US6177015B1 (en) * 1999-10-18 2001-01-23 Inco Limited Process for reducing the concentration of dissolved metals and metalloids in an aqueous solution
US6398968B1 (en) * 2000-02-25 2002-06-04 Watermark Technologies, Llc Methods for pressure stabilized removal of contaminants from solution
EP1341723A2 (en) * 2000-12-14 2003-09-10 Barrick Gold Corporation Process for recovering arsenic from acidic aqueous solution
US7247242B1 (en) 2001-10-10 2007-07-24 Sandia Corporation Arsenic removal from water
US6821434B1 (en) 2001-10-10 2004-11-23 Sandia Corporation System for removal of arsenic from water
WO2004044009A1 (en) * 2002-11-13 2004-05-27 Cargill, Incorporated Isolating chondroitin sulfate
US6863825B2 (en) 2003-01-29 2005-03-08 Union Oil Company Of California Process for removing arsenic from aqueous streams
US20100187178A1 (en) * 2003-01-29 2010-07-29 Molycorp Minerals, Llc Process for removing and sequestering contaminants from aqueous streams
TW559617B (en) * 2003-05-07 2003-11-01 Ind Tech Res Inst Method for removing arsenic from water
US7754099B2 (en) * 2004-04-26 2010-07-13 Mitsubishi Materials Corporation Reducing water purification material, method for producing reducing water purification material, method for treating wastewater, and wastewater treatment apparatus
US7279103B2 (en) * 2005-09-13 2007-10-09 United States Of America Enviromental Protection Agency Process for the purification of acidic metal-bearing waste waters to permissible discharge levels with recovery of marketable metal products
US8066874B2 (en) * 2006-12-28 2011-11-29 Molycorp Minerals, Llc Apparatus for treating a flow of an aqueous solution containing arsenic
US20090107919A1 (en) * 2007-10-31 2009-04-30 Chevron U.S.A. Inc. Apparatus and process for treating an aqueous solution containing chemical contaminants
US8349764B2 (en) 2007-10-31 2013-01-08 Molycorp Minerals, Llc Composition for treating a fluid
US8252087B2 (en) * 2007-10-31 2012-08-28 Molycorp Minerals, Llc Process and apparatus for treating a gas containing a contaminant
US20090107925A1 (en) * 2007-10-31 2009-04-30 Chevron U.S.A. Inc. Apparatus and process for treating an aqueous solution containing biological contaminants
TW201038510A (en) * 2009-03-16 2010-11-01 Molycorp Minerals Llc Porous and durable ceramic filter monolith coated with a rare earth for removing contaminates from water
PE20121145A1 (es) * 2009-04-09 2012-08-30 Molycorp Minerals Llc Proceso para la remocion de uno o mas contaminantes de una solucion de electro-refinacion utilizando metales de tierras raras
EP2499679A4 (en) * 2009-11-09 2014-01-01 Molycorp Minerals Llc REMOVAL OF STAINING FROM RARE EARTH
US20110220577A1 (en) 2010-03-12 2011-09-15 Council Of Scientific & Industrial Research Process for the removal of arsenic and chromium from water
US8287619B2 (en) * 2010-06-08 2012-10-16 C.V.G. Ferrominera Orinoco C.A. Process and equipment for the production of direct reduced iron and/or pig iron from iron ores having a high-phosphorus content
US9233863B2 (en) 2011-04-13 2016-01-12 Molycorp Minerals, Llc Rare earth removal of hydrated and hydroxyl species
KR20160132076A (ko) 2014-03-07 2016-11-16 몰리코프 미네랄스, 엘엘씨 비소 제거 특성이 뛰어난 세륨(iv) 산화물

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1642399A1 (de) * 1967-09-12 1971-05-06 Dorr Oliver Inc Verfahren zur Abwasserbehandlung unter Phosphorentfernung
US3423309A (en) * 1968-03-22 1969-01-21 Dorr Oliver Inc Waste treatment for phosphate removal
US3617569A (en) * 1970-07-31 1971-11-02 Dow Chemical Co Removal of phosphate from waste water
US3725265A (en) * 1971-01-22 1973-04-03 Grace W R & Co Purification of waste water
SU389691A1 (ru) * 1971-04-12 1977-08-05 Уральский Научно-Исследовательский И Проектный Институт Медной Промышленности Способ очистки кислых сточных вод
JPS5075562A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-11-08 1975-06-20
JPS5110028A (ja) * 1974-07-15 1976-01-27 Kubota Ltd Idonoki
JPS5126759A (en) * 1974-08-30 1976-03-05 Hitachi Plant Eng & Constr Co Hisoganjuhaisui no shorihoho
ES438937A1 (es) * 1975-06-30 1977-02-16 Borax Cons Ltd Un procedimiento para la eliminacion de arsenico de solucio-nes acuosas acidas que lo contienen.
SE403277B (sv) * 1976-04-09 1978-08-07 Boliden Ab Forfarande vid vatrening av gaser innehallande svaveldioxid, halogener och minst ett forflyktigat emne ur gruppen omfattande arsenik och arsenikforeningar
US4201667A (en) * 1979-02-09 1980-05-06 Fmc Corporation Process for removing arsenic from aqueous mediums
SU859321A1 (ru) * 1979-08-03 1981-08-30 Центральный научно-исследовательский институт оловянной промышленности Способ очистки сточных вод от мышь ка
CA1139466A (en) * 1980-08-22 1983-01-11 Donald R. Weir Removal of arsenic from aqueous solutions

Also Published As

Publication number Publication date
PT79186B (en) 1986-08-14
YU156984A (en) 1987-06-30
PT79186A (en) 1984-10-01
SE452307B (sv) 1987-11-23
JPS60143893A (ja) 1985-07-30
MA20224A1 (fr) 1985-04-01
BR8404502A (pt) 1985-08-06
GR80306B (en) 1985-01-08
ES535544A0 (es) 1985-12-16
SE8304858L (sv) 1985-03-13
YU43855B (en) 1989-12-31
JPH0521637B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1993-03-25
EP0139622B1 (en) 1987-12-09
MX7707E (es) 1990-09-25
SE8304858D0 (sv) 1983-09-12
EP0139622A1 (en) 1985-05-02
CA1253981A (en) 1989-05-09
DE3468010D1 (en) 1988-01-21
US4566975A (en) 1986-01-28
ATE31289T1 (de) 1987-12-15
ZA846790B (en) 1985-04-24

Similar Documents

Publication Publication Date Title
ES8603355A1 (es) Un metodo para purificar soluciones acuosas
AU589503B2 (en) Process for the removal of metals from waters containing them
GB1470242A (en) Method and installation for the treatment of waste water
JPS5795830A (en) Extracting method for molybdenum and vanadium from waste desulfurization catalyst
NZ193822A (en) Purification of aqueous solutions of iso-alpha-acids by precipitation of beta-acids
ES8405641A1 (es) Procedimiento para flocular lodos rojos procedentes del circuito de recuperacion de alumina bayer.
JO1211B1 (en) Method for purification of acid solutions containing uranium
KR850004441A (ko) 카드뮴 제거에 의한 습식 공정인산의 정제방법
ES8103038A1 (es) Un procedimiento para purificar caprolactama.
JPS5541863A (en) Removal of arsenic in aqueous solution
JPS56120509A (en) Purifying method for wet process crude phosphoric acid
JPS5768190A (en) Treatment of nonionic cellulose ether dissolved waste water
ES465615A1 (es) Procedimiento para la separacion de alcohol polivinilico de soluciones acuosas.
JPS5381477A (en) Removing method for heavy metal contained in solution used in treatment of exhaust gas
Albert et al. Board mill wastewater treatment system with countercurrent dissolved air flotation thickening and vacuum filter dewatering
GB948249A (en) A method of removing phosphates from sewage
GB1492606A (en) Treatment of phenolic effluents
SE8803597L (sv) Foerfarande foer rening av foerorenade vattenloesningar
JPS5726134A (en) Removing method for cyanogen in plating waste liquor or waste water
TW241209B (en) Separation process of vanadium and barium from waste hydrogenation desulfurization catalyst
JPS55142589A (en) Waste water treating method
Marchand Cardboard manufacture waste waters at Kaysersberg
JPS56158829A (en) Recovering method for zinc from diluted aqueous zinc solution
JPS5362778A (en) Treating method for waste solution containing heavy metal
JPS5655600A (en) Removing method for chromic acid contained in electrolytic solution