ATE156097T1 - Zusammensetzung zur herstellung von eisen- dithionit und verfahren zur entfernung von in wasser gelösten schwermetallen - Google Patents
Zusammensetzung zur herstellung von eisen- dithionit und verfahren zur entfernung von in wasser gelösten schwermetallenInfo
- Publication number
- ATE156097T1 ATE156097T1 AT92302883T AT92302883T ATE156097T1 AT E156097 T1 ATE156097 T1 AT E156097T1 AT 92302883 T AT92302883 T AT 92302883T AT 92302883 T AT92302883 T AT 92302883T AT E156097 T1 ATE156097 T1 AT E156097T1
- Authority
- AT
- Austria
- Prior art keywords
- dithionite
- heavy metal
- composition
- removal
- water
- Prior art date
Links
Classifications
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
- C02F1/683—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water by addition of complex-forming compounds
-
- 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
- Y10S204/00—Chemistry: electrical and wave energy
- Y10S204/13—Purification and treatment of electroplating baths and plating wastes
-
- 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
- Y10S210/913—Chromium
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/682,129 US5122279A (en) | 1991-04-08 | 1991-04-08 | Ferrous dithionite process and compositions for removing dissolved heavy metals from water |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE156097T1 true ATE156097T1 (de) | 1997-08-15 |
Family
ID=24738338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT92302883T ATE156097T1 (de) | 1991-04-08 | 1992-04-02 | Zusammensetzung zur herstellung von eisen- dithionit und verfahren zur entfernung von in wasser gelösten schwermetallen |
Country Status (6)
Country | Link |
---|---|
US (2) | US5122279A (de) |
EP (1) | EP0508676B1 (de) |
JP (1) | JPH0729104B2 (de) |
AT (1) | ATE156097T1 (de) |
CA (1) | CA2065479C (de) |
DE (1) | DE69221193T2 (de) |
Families Citing this family (79)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US5122279A (en) * | 1991-04-08 | 1992-06-16 | Romar Technologies Inc. | Ferrous dithionite process and compositions for removing dissolved heavy metals from water |
US5389262A (en) * | 1991-04-08 | 1995-02-14 | Romar Technologies, Inc. | Process for removing heavy metals from solutions with ferrous dithionite and hydroxide |
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 |
US5462670A (en) * | 1991-04-08 | 1995-10-31 | Romar Technologies, Inc. | Process for removing oils and greases from aqueous solution |
AU657778B2 (en) * | 1991-10-11 | 1995-03-23 | Engelhard Corporation | In situ method for producing hydrosulfite bleach and use thereof |
US5431825A (en) * | 1992-10-29 | 1995-07-11 | Chemical Waste Management, Inc. | Method for the reduction and stabilization of metals |
US5360551A (en) * | 1993-04-01 | 1994-11-01 | Crompton & Knowles Corporation | Process for color reduction of dye wastewater |
SE501569C2 (sv) * | 1993-05-25 | 1995-03-13 | Admix Scandinavia Ab | Medel för vattenrening och dess användning |
US5458736A (en) * | 1994-01-31 | 1995-10-17 | Westvaco Corporation | Method for producing recycled materials for hygienic end uses |
US5472618A (en) * | 1994-02-07 | 1995-12-05 | Great Western Chemical Company | Method for recovering metals from solutions |
US5451414A (en) * | 1994-03-15 | 1995-09-19 | Heritage Environmental Services, Inc. | Micronutrient supplement |
RU2065835C1 (ru) * | 1995-01-27 | 1996-08-27 | Мануйлова Ева Юльевна | Способ очистки воды от тяжелых металлов, коллоидная система для очистки воды и способ ее получения |
US5474684A (en) * | 1995-02-21 | 1995-12-12 | Envirocorp Services & Technology, Inc. | Antifreeze purification |
US5651895A (en) * | 1995-02-21 | 1997-07-29 | Envirocorp Services & Technology | Heavy metals removal |
US5645730A (en) * | 1995-02-21 | 1997-07-08 | Envirocorp Services & Technology, Inc. | Acid wastewater treatement |
US5538617A (en) * | 1995-03-08 | 1996-07-23 | Bethlehem Steel Corporation | Ferrocyanide-free halogen tin plating process and bath |
US6270679B1 (en) * | 1995-05-19 | 2001-08-07 | Lawrence Kreisler | Method for recovering and separating metals from waste streams |
US6274045B1 (en) * | 1995-05-19 | 2001-08-14 | Lawrence Kreisler | Method for recovering and separating metals from waste streams |
DK90796A (da) * | 1996-08-28 | 1998-03-01 | Thomas Hoejlund Christensen | Metode til udvaskning og kemisk stabilisering af flyveaske, røgrensningsprodukter og andre metalholdige materialer |
US6153108A (en) * | 1998-06-11 | 2000-11-28 | Texaco Inc. | Method for removal of heavy metals from water |
US6315906B1 (en) * | 1998-07-10 | 2001-11-13 | United States Filter Corporation | Removing metal ions from wastewater |
US6346195B1 (en) | 1998-07-10 | 2002-02-12 | U.S. Filter Corporation | Ion exchange removal of metal ions from wastewater |
US6238571B1 (en) * | 1998-09-15 | 2001-05-29 | Massachusetts Institute Of Technology | Removal of contaminant metals from waste water |
US6265438B1 (en) | 1998-12-03 | 2001-07-24 | Heritage Technologies, Llc | Vitamin compatible micronutrient supplement |
US6228270B1 (en) * | 1999-06-10 | 2001-05-08 | Noranda Inc. | Process for reducing selenium and mercury from aqueous solutions |
CA2362639C (en) | 1999-12-10 | 2009-02-24 | R. Spaene Kg | Process for removing deposits from water-carrying systems and devices for water supply |
DE10004581A1 (de) * | 2000-02-02 | 2001-08-09 | Robert Nusko | Mittel und Verfahren zur Brunnensanierung |
US6797178B2 (en) * | 2000-03-24 | 2004-09-28 | Ada Technologies, Inc. | Method for removing mercury and mercuric compounds from dental effluents |
US6569307B2 (en) * | 2000-10-20 | 2003-05-27 | The Boc Group, Inc. | Object plating method and system |
US6890414B2 (en) | 2001-09-04 | 2005-05-10 | The Boc Group, Inc. | Purification system and method |
US6896817B2 (en) * | 2002-04-15 | 2005-05-24 | Gregory S. Bowers | Essentially insoluble heavy metal sulfide slurry for wastewater treatment |
US7183235B2 (en) * | 2002-06-21 | 2007-02-27 | Ada Technologies, Inc. | High capacity regenerable sorbent for removing arsenic and other toxic ions from drinking water |
KR100481730B1 (ko) * | 2002-06-25 | 2005-04-11 | 주식회사 일성 | 난분해성 산업폐수처리용 복합산화제 조성물 및 그를이용한 산업폐수의 처리방법 |
US7029202B2 (en) * | 2002-07-22 | 2006-04-18 | Zhuang J Ming | Method for treating metal-contaminated water and soil |
US7033507B2 (en) * | 2002-11-15 | 2006-04-25 | Noram Engineering And Constructors Ltd. | Method for removing metals from acid mine drainage |
AU2003902704A0 (en) * | 2003-05-29 | 2003-06-19 | Crc For Waste Management And Pollution Control Limited Of Unsw | Process for producing a nanoscale zero-valent metal |
WO2005032394A2 (en) * | 2003-10-01 | 2005-04-14 | Ada Technologies, Inc. | System for removing mercury and mercuric compounds from dental wastes |
US7166228B2 (en) * | 2003-10-15 | 2007-01-23 | U.S. Environmental Protection Agency | Method of treating a subsurface formation with ferrous iron to reduce contaminants to harmless species |
JP4949849B2 (ja) * | 2004-04-28 | 2012-06-13 | 水ing株式会社 | 有機性排水及び汚泥の処理方法及び処理装置 |
US20050289659A1 (en) * | 2004-05-18 | 2005-12-29 | Jacks E T | Cre-lox based method for conditional RNA interference |
US7488423B2 (en) * | 2005-08-02 | 2009-02-10 | Siemens Water Technologies Holding Corp. | System and method of slurry treatment |
JP4555801B2 (ja) * | 2006-07-11 | 2010-10-06 | 日華化学株式会社 | 重金属含有廃水処理剤及びそれを用いた廃水処理方法 |
SG174019A1 (en) * | 2006-08-28 | 2011-09-29 | Siemens Water Tech Corp | System and method of slurry treatment |
US8470172B2 (en) | 2007-01-09 | 2013-06-25 | Siemens Industry, Inc. | System for enhancing a wastewater treatment process |
US20110036771A1 (en) | 2007-01-09 | 2011-02-17 | Steven Woodard | Ballasted anaerobic system and method for treating wastewater |
AU2008205247B2 (en) | 2007-01-09 | 2010-07-01 | Evoqua Water Technologies Llc | A system and method for removing dissolved contaminants, particulate contaminants, and oil contaminants from industrial waste water |
US20100213123A1 (en) | 2007-01-09 | 2010-08-26 | Marston Peter G | Ballasted sequencing batch reactor system and method for treating wastewater |
WO2008147669A2 (en) * | 2007-05-10 | 2008-12-04 | University Of Georgia Research Foundation, Inc. | Sulfur-based bulk reductants and methods of using same |
JP5749461B2 (ja) * | 2010-03-10 | 2015-07-15 | 住友金属鉱山株式会社 | アルミニウム、マグネシウムおよびマンガンを含む排水の排水処理方法 |
CN102115890B (zh) * | 2011-01-04 | 2012-12-05 | 华南理工大学 | Pcb硝酸型剥锡铅废液的全资源化方法 |
BR112013023907A2 (pt) | 2011-03-18 | 2019-09-24 | Orbite Aluminae Inc | processo de recuperação de ao menos um elemento terra-rara a partir de um material contendo alumínio |
BR112013028371A2 (pt) | 2011-05-04 | 2017-02-14 | Orbite Aluminae Inc | processo de recuperação de ao menos um elemento terra-rara e/ou de ao menos um metal raro selecionado dentre in, zr, li e ga a partir de ao menos um material |
BR112013030819A2 (pt) | 2011-06-03 | 2019-09-24 | Orbite Aluminae Inc | método para separar íons de ferror de íons de alumínio contidos em uma composição aquosa e método para preparar hematita |
IN2014DN03007A (de) | 2011-09-16 | 2015-05-08 | Orbite Aluminae Inc | |
JP6025868B2 (ja) | 2012-01-10 | 2016-11-16 | オーバイト アルミナ インコーポレイテッドOrbite Aluminae Inc. | 赤泥を処理するプロセス |
JP2013202521A (ja) * | 2012-03-28 | 2013-10-07 | Jx Nippon Mining & Metals Corp | セレン含有排水の処理方法 |
RU2633579C9 (ru) | 2012-03-29 | 2017-12-25 | Орбит Алюминэ Инк. | Способы обработки летучей золы |
US10919792B2 (en) | 2012-06-11 | 2021-02-16 | Evoqua Water Technologies Llc | Treatment using fixed film processes and ballasted settling |
BR112015000626A2 (pt) | 2012-07-12 | 2017-06-27 | Orbite Aluminae Inc | processos para preparação de óxido de titânio e outros produtos variados |
WO2014047728A1 (en) | 2012-09-26 | 2014-04-03 | Orbite Aluminae Inc. | Processes for preparing alumina and magnesium chloride by hc1 leaching of various materials |
CA2881703C (en) | 2012-09-26 | 2020-12-22 | Evoqua Water Technologies Llc | System for measuring the concentration of magnetic ballast in a slurry |
CN105189357A (zh) | 2012-11-14 | 2015-12-23 | 奥佰特氧化铝有限公司 | 纯化铝离子的方法 |
HU230721B1 (hu) * | 2013-04-26 | 2017-11-28 | Auro-Science Consulting Kft. | Nanovas-szuszpenzió, eljárás előállítására, alkalmazása és berendezés nanovas-szuszpenzió gyártására |
CN103351044A (zh) * | 2013-06-18 | 2013-10-16 | 浙江逸盛石化有限公司 | 一种放流废水重金属沉淀回收装置及方法 |
JP6316100B2 (ja) * | 2014-05-30 | 2018-04-25 | 勇 原澤 | 鉱山廃水または浸透水の処理方法 |
CN104310561A (zh) * | 2014-11-24 | 2015-01-28 | 天津大港油田滨港集团博弘石油化工有限公司 | 一种采油用亚铁离子处理剂 |
CN105541055B (zh) * | 2016-03-03 | 2017-05-24 | 广州满坤电子有限公司 | 一种去除pcb电路板工业废水中锡的处理系统 |
CN105541056B (zh) * | 2016-03-03 | 2016-11-30 | 杭州启澄科技有限公司 | 一种去除pcb电路板工业废水中锡的处理方法 |
CN106830261B (zh) * | 2017-03-07 | 2020-05-12 | 苏州清控环保科技有限公司 | 一种重金属捕集剂及其制备方法 |
CN108636360A (zh) * | 2018-05-22 | 2018-10-12 | 福建师范大学 | 一种功能化纳米硫化铁的制备方法和应用 |
US11851346B2 (en) | 2018-07-03 | 2023-12-26 | U.S. Peroxide, Llc | Creation of an iron product for wastewater treatment |
CN109437471A (zh) * | 2018-10-25 | 2019-03-08 | 深圳骏泽环保有限公司 | 线路板废水达标处理工艺 |
CN111170509A (zh) * | 2020-01-19 | 2020-05-19 | 大康环境技术(苏州)有限公司 | 含有重金属的废酸溶液的处理方法 |
CN112320918B (zh) * | 2020-10-19 | 2021-10-22 | 武汉大学 | 一种利用金属离子掺杂Fe(OH)2去除水中卤代有机污染物的方法 |
CA3200122A1 (en) * | 2020-10-30 | 2022-05-05 | Clean Mining Pty Ltd | Process for recovering precious metal from an aqueous solution |
DE212020000377U1 (de) * | 2020-12-13 | 2021-02-11 | Suzhou Green Rulan Environmental Protection Technology Co., Ltd. | Eine Abwasserbehandlungsvorrichtung für Textildrucken und -färben |
CN112960829B (zh) * | 2021-02-20 | 2022-08-23 | 成都明天高新产业有限责任公司 | 一种印制电路板生产含铜废水处理工艺 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1479542A (en) * | 1922-03-02 | 1924-01-01 | Int Precipitation Co | Process for recovery of metals from their ores |
US3226185A (en) * | 1961-11-09 | 1965-12-28 | Ethyl Corp | Method of preparing an alkali metal dithionite |
US3216790A (en) * | 1962-03-22 | 1965-11-09 | Nat Distillers Chem Corp | Preparation of sodium hydrosulfite |
US3260593A (en) * | 1962-09-12 | 1966-07-12 | Kennecott Copper Corp | Process for leaching copper from lowgrade, copper-bearing ore materials |
US3634071A (en) * | 1969-05-12 | 1972-01-11 | Kennecott Copper Corp | Process for precipitating copper from solution |
DE2122415A1 (de) * | 1971-05-06 | 1972-11-16 | Gockel, Hans, 7000 Stuttgart-Feuerbach | Verfahren zum Entgiften, Klären und Wiedergewinnen von Metallsalzen aus Abwässern und Restkonzentraten durch Reduktion bis zu den Metallen mittels Hydrosulfit konz. (Natriumdithionit) oder Hydrazin bei gleichzeitiger Anwendung eines Impfstoffes und Sedimentationsbeschleunigers zur Verkürzung der Ausfällzeit und Reduzierung des Schlammvolumens |
US3770630A (en) * | 1971-09-02 | 1973-11-06 | Dart Ind Inc | Treatment of electroless process and stripping solutions |
US3902896A (en) * | 1974-05-22 | 1975-09-02 | Int Nickel Co | Cementation of metals from acid solutions |
US4076795A (en) * | 1976-09-09 | 1978-02-28 | Engelhard Minerals & Chemicals Corporation | Hydrosulfite production |
US4157980A (en) * | 1976-09-17 | 1979-06-12 | Engelhard Minerals & Chemicals Corporation | Hydrosulfite preparation |
JPS5370998A (en) * | 1976-12-06 | 1978-06-23 | Showa Denko Kk | Removing method for chlorate in caustic alkali |
DD200163A1 (de) * | 1981-08-31 | 1983-03-23 | Klaus Nestler | Verfahren zur entgiftung von toxischen oxokomplex-ionen enthaltenden elektrolytloesungen |
IT8348501A0 (it) * | 1982-06-16 | 1983-06-14 | Occidental Chem Co | Apparecchio e procedimento per rimuovere ioni rame da una soluzione acquosa |
EP0097478B1 (de) * | 1982-06-22 | 1989-06-07 | Seitetsu Kagaku Co., Ltd. | Verfahren zur Extrahierung und Zurückgewinnung von Quecksilber aus Abwässern |
US4698162A (en) * | 1985-12-06 | 1987-10-06 | Morton Thiokol, Inc. | Method for prevention of metallic precipitate reoxidation/redissolution in aqueous systems |
US4859447A (en) * | 1986-12-22 | 1989-08-22 | Morton Thiokol, Inc. | Process for the production of sodium hydrosulfite |
DE3822922C2 (de) * | 1988-07-07 | 1995-09-21 | Pan Chemie Dr J Fueloep | Verfahren zur Abtrennung von Schwermetallen aus Abwässern durch Sulfidfällung mittels Calciumpolysulfid |
US5039428B1 (en) * | 1990-03-05 | 1994-04-12 | Tetra Technologoes Inc | Waste water treatment process using improved recycle of high density sludge |
US5102556A (en) * | 1990-03-30 | 1992-04-07 | Union Oil Company Of California | Method for rendering ferric hydroxide sludges recyclable |
US5122279A (en) * | 1991-04-08 | 1992-06-16 | Romar Technologies Inc. | Ferrous dithionite process and compositions for removing dissolved heavy metals from water |
-
1991
- 1991-04-08 US US07/682,129 patent/US5122279A/en not_active Expired - Fee Related
-
1992
- 1992-04-02 AT AT92302883T patent/ATE156097T1/de not_active IP Right Cessation
- 1992-04-02 EP EP92302883A patent/EP0508676B1/de not_active Expired - Lifetime
- 1992-04-02 DE DE69221193T patent/DE69221193T2/de not_active Expired - Fee Related
- 1992-04-07 CA CA002065479A patent/CA2065479C/en not_active Expired - Fee Related
- 1992-04-08 JP JP4087239A patent/JPH0729104B2/ja not_active Expired - Lifetime
- 1992-06-03 US US07/893,978 patent/US5298168A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69221193T2 (de) | 1997-12-04 |
EP0508676A3 (en) | 1993-02-03 |
US5122279A (en) | 1992-06-16 |
JPH0729104B2 (ja) | 1995-04-05 |
EP0508676A2 (de) | 1992-10-14 |
US5298168A (en) | 1994-03-29 |
CA2065479C (en) | 1999-03-09 |
DE69221193D1 (de) | 1997-09-04 |
EP0508676B1 (de) | 1997-07-30 |
JPH0647385A (ja) | 1994-02-22 |
CA2065479A1 (en) | 1992-10-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ATE156097T1 (de) | Zusammensetzung zur herstellung von eisen- dithionit und verfahren zur entfernung von in wasser gelösten schwermetallen | |
PE17351590A1 (es) | UN COMPUESTO DE N,N`-(1-OXO-1,2-ETANODIIL)-bis (aspartato) Y METODO PARA SU PREPARACION | |
DE69333941D1 (de) | Verfahren zur Behandlung von Abfallsuspensionen | |
PT851839E (pt) | Processo para o fabrico de carbonato de calcio de elevada pureza | |
NZ336272A (en) | The use of calcium carbonate in an acidic aqueous media for papermaking | |
DE69011301D1 (de) | Verfahren zum Entfernen von Schwefeldioxyd aus Rauchgasen. | |
DE69123836T2 (de) | Verfahren zur nassen Oxydation von alkalischem Sulfid | |
KR970704502A (ko) | 석회암을 사용하는 습식 연도 가스 탈황 방법(Wet Flue Gas Desulphurisation Process Using Limestone) | |
ATE48987T1 (de) | Verfahren fuer die beseitigung von metallen aus wasser. | |
AU4213896A (en) | Process for purifying water | |
FR2506341A1 (fr) | Procede pour eliminer les depots de sulfure de fer des surfaces metalliques | |
PL292275A1 (en) | Method of removing sulfur dioxide from gases using a modified lime | |
TW375596B (en) | Process for treating aqueous media containing metal ions | |
BR9500545A (pt) | Processo para a recuperação e reutilização do cobalto e do tungstênio de águas de reação | |
GB1432035A (en) | Method for removing sulphur dioxide in the form of calcium sulphite from a combustion exhaust gas | |
IL83181A (en) | Process for the removal of heavy metals from acid,phosphate-containing,aqueous media | |
FR2382406A1 (fr) | Procede de neutralisation de liquides contenant des acides | |
EP0263424A3 (en) | Process for removing arsenic from waste water containing arsenic | |
GB1271112A (en) | Phosphate removal from waste water | |
ATE71677T1 (de) | Verfahren zur flotation von fuellstoffen aus altpapier. | |
DE69524272D1 (de) | Verfahren zur Beseitigung von Schwermetallen | |
ATE54135T1 (de) | Neue komplexe ferrisalze von alpha,alpha'-(1,2ethandiyldiimino)-bis(5-carboxy-2hydroxybenzolessigs|ure> und verfahren zu ihrer herstellung. | |
BR9813975A (pt) | Processo de fabricação de carbonato de cálcio | |
GB1525942A (en) | Combined process for the treatment of waste solutions and sulphur containing gases | |
TW333521B (en) | Magnesium-enhanced sulfur dioxide scrubbing with gypsum formation |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
UEP | Publication of translation of european patent specification | ||
REN | Ceased due to non-payment of the annual fee |