WO1999043619A1 - Method for treating waste water from gold mines in order to obtain drinking water - Google Patents

Method for treating waste water from gold mines in order to obtain drinking water Download PDF

Info

Publication number
WO1999043619A1
WO1999043619A1 PCT/DE1998/000591 DE9800591W WO9943619A1 WO 1999043619 A1 WO1999043619 A1 WO 1999043619A1 DE 9800591 W DE9800591 W DE 9800591W WO 9943619 A1 WO9943619 A1 WO 9943619A1
Authority
WO
WIPO (PCT)
Prior art keywords
barium
water
sulfate
waste water
drinking water
Prior art date
Application number
PCT/DE1998/000591
Other languages
German (de)
French (fr)
Inventor
Hans-Peter Klein-Schell
Michael Lerch
Peter Rosswag
Original Assignee
Klein Schell Hans Peter
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
Application filed by Klein Schell Hans Peter filed Critical Klein Schell Hans Peter
Priority to PCT/DE1998/000591 priority Critical patent/WO1999043619A1/en
Priority to AU70288/98A priority patent/AU7028898A/en
Publication of WO1999043619A1 publication Critical patent/WO1999043619A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
    • 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
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62—Heavy metal compounds
    • C02F1/64—Heavy metal compounds of iron or manganese
    • 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
    • C02F2101/101—Sulfur compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention relates to a method for treating gold mine waste water with the aim of extracting drinking water, as described in claims 1 and 2.
  • the contaminants from mine waste water from gold mining are mainly iron, manganese, calcium carbonate and sulfate. Other inorganic and organic substances occur only in insignificant amounts.
  • the main problem here is the high sulfate load.
  • the conventional treatment leads to high operating costs and / or a large amount of sludge to be disposed of, which results in an immense need for landfill space.
  • the object of the invention is to carry out the wastewater treatment in such a way that raw materials are recovered for technical use and the cleaned wastewater has drinking quality.
  • the wastewater is cleaned in the following stages:
  • the decisive factor is the use of barium as a precipitant in stage 3.
  • the barium sulfate resulting from the precipitation is circulated through the barium sulfide / sulfate process.
  • the precipitate barium sulfate is obtained by annealing with coal at low temperatures (600 ° C to 1000 ° C)
  • Barium sulfide converted Barium sulfide converted. Barium sulfide is readily soluble in water and is added to the wastewater in the cycle, where the barium ions again precipitate with the sulfate ions as barium sulfate.
  • the object is achieved by a method as described in claim 2.
  • the wastewater is cleaned in the following stages:
  • the decisive factor is the use of barium as a precipitant in stage 3.
  • the barium sulfate produced by the precipitation is circulated through the barium sulfate process.
  • the precipitate barium sulfate is obtained by thermal treatment at high temperatures (approx. 1500 ° C.) and addition of - 3 -
  • Barium oxide hydrolyzes in water and can be added to the wastewater in the cycle, whereby it again forms barium sulfate with the sulfate ions.
  • Fig. 1 shows the course of the raw water treatment with the circulation of the barium by means of the barium sulfide / sulfate process
  • Fig. 2 shows the course of the raw water treatment with the circulation of the barium by means of the barium sulfate process.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Removal Of Specific Substances (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

The invention relates to a method for treating waste water from gold mines in order to obtain drinking water. The raw water is treated in such a way that raw materials can be recovered for technical use and the cleaned water is suitable for drinking. Most importantly, barium is used to precipitate the sulphate and the barium compounds are circulated. The method comprises the following steps: 1. precipitation of iron and manganese through the introduction of air and/or by raising the pH; 2. precipitation of the lime by adjusting the pH and or the carbonic acid balance; 3. removal of the sulphate with barium (barium sulphide/sulphate process or barium sulphate process) and re-treatment; and 4. purification (adsorption) of the residual substances.

Description

- 1 - - 1 -
Verfahren zur Behandlung von Goldminenabwässern mit dem Ziel der TrinkwassergewinnungProcess for the treatment of gold mine waste water with the aim of extracting drinking water
Beschreibung Die Erfindung betrifft ein Verfahren zur Behandlung von Goldminenabwässern mit dem Ziel der Trinkwassergewinnung, wie es in den Ansprüchen 1 und 2 beschrieben ist.The invention relates to a method for treating gold mine waste water with the aim of extracting drinking water, as described in claims 1 and 2.
Bei den Verunreinigungen von Minenabwässern aus der Goldgewinnung handelt es sich hauptsächlich um Eisen, Mangan, Caiciumcarbonat und Sulfat. Andere anorganische und organische Substanzen kommen nur in unbedeutenden Mengen vor. Das Hauptproblem liegt hierbei in der hohen Sulfat-Fracht. In Anbetracht der großen zu reinigenden Abwassermengen, kommt es bei der herkömmlichen Behandlung zu hohen Betriebskosten und/oder eine große Menge an zu entsorgenden Schlamm, was einen immensen Bedarf an Deponieraum zur Folge hat.The contaminants from mine waste water from gold mining are mainly iron, manganese, calcium carbonate and sulfate. Other inorganic and organic substances occur only in insignificant amounts. The main problem here is the high sulfate load. In view of the large amounts of wastewater to be treated, the conventional treatment leads to high operating costs and / or a large amount of sludge to be disposed of, which results in an immense need for landfill space.
Aufgabe der Erfindung ist es, die Abwasserreinigung so durchzuführen, daß Rohstoffe für eine technische Nutzung zurückgewonnen werden und das gereinigte Abwasser Trinkqualität besitzt.The object of the invention is to carry out the wastewater treatment in such a way that raw materials are recovered for technical use and the cleaned wastewater has drinking quality.
Die Aufgabe wird gelöst durch ein Verfahren, wie es im Anspruch 1 beschrieben ist.The object is achieved by a method as described in claim 1.
Nach Anspruch 1 wird das Abwasser in folgende Stufen gereinigt:According to claim 1, the wastewater is cleaned in the following stages:
1. Fällung von Eisen und Mangan durch Lufteinleitung und/oder pH-Wert- Anhebung1. Precipitation of iron and manganese by introducing air and / or raising the pH
2. Fällung von Kalk durch Einstellung des pH-Wertes und des Kohlensäuregleichgewichtes - 2 -2. Precipitation of lime by adjusting the pH and the carbon dioxide balance - 2 -
3. Sulfatentfernung mit Barium (Bariumsulfid/-sulfat-Prozeß) und Nachbehandlung3. Sulfate removal with barium (barium sulfide / sulfate process) and aftertreatment
4. Reinigung (Adsorption) von verbleibenden Substanzen4. Cleaning (adsorption) of remaining substances
Entscheidend ist die Verwendung von Barium als Fällungsmittel in Stufe 3. Das durch die Fällung entstehende Bariumsulfat wird durch den Bariumsulfid/-sulfat- Prozeß im Kreislauf geführt.The decisive factor is the use of barium as a precipitant in stage 3. The barium sulfate resulting from the precipitation is circulated through the barium sulfide / sulfate process.
Beim Bariumsulfid/-sulfat-Prozeß wird das Fällungsprodukt Bariumsulfat durch Glühen mit Kohle bei niedrigen Temperaturen (600°C bis 1000°C) inIn the barium sulfide / sulfate process, the precipitate barium sulfate is obtained by annealing with coal at low temperatures (600 ° C to 1000 ° C)
Bariumsulfid umgewandelt. Bariumsulfid ist in Wasser gut löslich und wird im Kreislauf dem Abwasser wieder zugefügt, wo die Barium-Ionen erneut mit den Sulfat-Ionen als Bariumsulfat ausfallen.Barium sulfide converted. Barium sulfide is readily soluble in water and is added to the wastewater in the cycle, where the barium ions again precipitate with the sulfate ions as barium sulfate.
Alternativ wird die Aufgabe gelöst durch ein Verfahren, wie es im Anspruch 2 beschrieben ist.Alternatively, the object is achieved by a method as described in claim 2.
Nach Anspruch 2 wird das Abwasser in folgende Stufen gereinigt:According to claim 2, the wastewater is cleaned in the following stages:
1. Fällung von Eisen und Mangan durch Lufteinleitung und/oder pH-Wert- Anhebung1. Precipitation of iron and manganese by introducing air and / or raising the pH
2. Fällung von Kalk durch Einstellung des pH-Wertes und des Kohlensäuregleichgewichtes2. Precipitation of lime by adjusting the pH and the carbon dioxide balance
3. Sulfatentfernung mit Barium (Bariumsulfat-Prozeß) und Nachbehandlung 4. Reinigung (Adsorption) von verbleibenden Substanzen3. Sulfate removal with barium (barium sulfate process) and aftertreatment 4. Cleaning (adsorption) of remaining substances
Entscheidend ist die Verwendung von Barium als Fällungsmittel in Stufe 3. Das durch die Fällung entstehende Bariumsulfat wird durch den Bariumsulfat-Prozeß im Kreislauf geführt.The decisive factor is the use of barium as a precipitant in stage 3. The barium sulfate produced by the precipitation is circulated through the barium sulfate process.
Beim Bariumsulfat-Prozeß wird das Fällungsprodukt Bariumsulfat durch thermische Behandlung bei hohen Temperaturen (ca. 1500°C) und Zugabe von - 3 -In the barium sulfate process, the precipitate barium sulfate is obtained by thermal treatment at high temperatures (approx. 1500 ° C.) and addition of - 3 -
wenig Kohle in Bariumoxid umgewandelt. Bariumoxid hydrolisiert in Wasser und kann im Kreislauf dem Abwasser wieder zugefügt werden, wobei es mit den Sulfat-Ionen erneut Bariumsulfat bildet.little coal converted to barium oxide. Barium oxide hydrolyzes in water and can be added to the wastewater in the cycle, whereby it again forms barium sulfate with the sulfate ions.
Die Erfindung wird anhand der Fig. 1 und 2 erläutert. Es zeigen:The invention will be explained with reference to FIGS. 1 and 2. Show it:
Fig. 1 den Ablauf der Rohwasserbehandlung mit der Kreislaufführung des Bariums mittels des Bariumsulfid/-sulfat-ProzessesFig. 1 shows the course of the raw water treatment with the circulation of the barium by means of the barium sulfide / sulfate process
undand
Fig. 2 den Ablauf der Rohwasserbehandlung mit der Kreislaufführung des Bariums mittels des Bariumsulfat-Prozesses. Fig. 2 shows the course of the raw water treatment with the circulation of the barium by means of the barium sulfate process.

Claims

.4 -Verfahren zur Behandlung von Goldminenabwässern mit dem Ziel der TrinkwassergewinnungAnsprüche .4 -Process for the treatment of gold mine waste water with the aim of extracting drinking water
1. Verfahren zur Behandlung von Goldminenabwässern mit dem Ziel der Trinkwassergewinnung, dadurch gekennzeichnet, daß zur Sulfatentfernung Bariumsulfid eingesetzt und das Fällungsprodukt Bariumsulfat durch Reduktion mit Kohle bei 600°C bis 1000°C wieder in Bariumsulfid umgewandelt und im Kreislauf geführt wird.1. Process for the treatment of gold mine waste water with the aim of extracting drinking water, characterized in that barium sulfide is used for sulfate removal and the precipitated barium sulfate is converted back into barium sulfide by recycling with coal at 600 ° C to 1000 ° C and is circulated.
2. Verfahren zur Behandlung von Goldminenabwässern mit dem Ziel der Trinkwassergewinnung, dadurch gekennzeichnet, daß zur Sulfatentfernung Bariumoxid eingesetzt und das Fällungsprodukt Bariumsulfat durch thermische Behandlung bei ca. 1500°C mit wenig Kohle wieder in Bariumoxid umgewandelt und im Kreislauf geführt wird. 2. Process for the treatment of gold mine waste water with the aim of extracting drinking water, characterized in that barium oxide is used for sulfate removal and the precipitated barium sulfate is converted back into barium oxide by thermal treatment at about 1500 ° C. with little coal and is circulated.
PCT/DE1998/000591 1998-02-28 1998-02-28 Method for treating waste water from gold mines in order to obtain drinking water WO1999043619A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/DE1998/000591 WO1999043619A1 (en) 1998-02-28 1998-02-28 Method for treating waste water from gold mines in order to obtain drinking water
AU70288/98A AU7028898A (en) 1998-02-28 1998-02-28 Method for treating waste water from gold mines in order to obtain drinking water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE1998/000591 WO1999043619A1 (en) 1998-02-28 1998-02-28 Method for treating waste water from gold mines in order to obtain drinking water

Publications (1)

Publication Number Publication Date
WO1999043619A1 true WO1999043619A1 (en) 1999-09-02

Family

ID=6918621

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/000591 WO1999043619A1 (en) 1998-02-28 1998-02-28 Method for treating waste water from gold mines in order to obtain drinking water

Country Status (2)

Country Link
AU (1) AU7028898A (en)
WO (1) WO1999043619A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008018854A1 (en) * 2008-04-15 2009-10-22 Conny Brachmann Processing sulfate-containing mine seepage- and mine sewage-water, comprises collecting water in container, conducting sulfate-containing water in reaction container, collecting mine seepage water and neutralizing chloride-containing water

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935100A (en) * 1973-06-29 1976-01-27 Institut Francais Du Petrole Process for the treatment of waste waters containing sulfuric acid and/or ammonium sulfate
US4031195A (en) * 1973-05-14 1977-06-21 Georgia Tech Research Institute Regenerative method removal of sulfur dioxide from stack gases
EP0205976A2 (en) * 1985-05-29 1986-12-30 METALNA strojegradnja, konstrukcije in montaza n.sol.o. Tozd Tovarna investicijska opreme n.sol.o A process for the removal of sulfur oxides from gaseous and/or liquid waste products
US5035807A (en) * 1989-03-15 1991-07-30 Csir Water treatment for sulfate ion removal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031195A (en) * 1973-05-14 1977-06-21 Georgia Tech Research Institute Regenerative method removal of sulfur dioxide from stack gases
US3935100A (en) * 1973-06-29 1976-01-27 Institut Francais Du Petrole Process for the treatment of waste waters containing sulfuric acid and/or ammonium sulfate
EP0205976A2 (en) * 1985-05-29 1986-12-30 METALNA strojegradnja, konstrukcije in montaza n.sol.o. Tozd Tovarna investicijska opreme n.sol.o A process for the removal of sulfur oxides from gaseous and/or liquid waste products
US5035807A (en) * 1989-03-15 1991-07-30 Csir Water treatment for sulfate ion removal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008018854A1 (en) * 2008-04-15 2009-10-22 Conny Brachmann Processing sulfate-containing mine seepage- and mine sewage-water, comprises collecting water in container, conducting sulfate-containing water in reaction container, collecting mine seepage water and neutralizing chloride-containing water

Also Published As

Publication number Publication date
AU7028898A (en) 1999-09-15

Similar Documents

Publication Publication Date Title
US4689154A (en) Process for removing phosphorus from industrial waste water
CA2418472A1 (en) Water treatment method
US5009793A (en) Process for the separation of heavy metals from waste materials
US3377271A (en) Process for the treatment of waste-containing waters
US5820966A (en) Removal of arsenic from iron arsenic and sulfur dioxide containing solutions
US5093007A (en) Process for removal of inorganic and cyanide contaminants from wastewater
US8557124B2 (en) Treatment of water
CA2127437C (en) Cyanide recycling process
JPH1190165A (en) Treatment of waste water from flue gas desulfurization
US5534234A (en) Recovery of manganese from leach solutions
JP3600458B2 (en) Treatment of flue gas desulfurization wastewater
Wu et al. Sludge digestion enhancement and nutrient removal from anaerobic supernatant by Mg (OH) 2 application
CN101760638B (en) Method for recovering magnesium from magnesium sulfate solution
WO1999043619A1 (en) Method for treating waste water from gold mines in order to obtain drinking water
DE2902914A1 (en) METHOD OF TREATING SLAG
McLaughlin Demonstration of an innovative heavy metals removal process
DE102008018854B4 (en) Process for the treatment of mine waters
JP2005000875A (en) Method for recycling acidic waste water component and acidic waste water treatment system
Rao et al. PROSPECT OF METAL RECOVERY/RECYCLE FROM ACID MINE DRAINAGE¹
US4978457A (en) Method of filtering a brine
US4670228A (en) Process for the recovery of valuable metals, particularly rare earths and similar metals, from a carbonate-containing raw material
CN108883444A (en) For handling the method for generating the barren rock material of acid
Mulopo Direct elemental sulphur recovery from gold acid mine drainage streams
US3205064A (en) Neutralization of waste pickle liquor with blast furnace dust
DE1260498B (en) Use of a wet furnace gas cleaning system to separate dissolved zinc compounds from the furnace gas scrubbing water

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU BR LK MG