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Juby, G.J.G. |
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Title |
Desalination of calcium sulphate scaling mine water: Design and operation of the SPARRO process |
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1996 |
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Water Sa |
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22 |
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2 |
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161-172 |
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Keywords |
mine water treatment |
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Abstract |
The South African mining industry discharges relatively small quantities of mine service water to the environment, but these effluents contribute substantially to the salt load of the receiving waters. The poor quality of service water also has significant cost implications on the mining operations. Of the two main types of mine service water encountered in the gold mining industry, the so-called calcium sulphate scaling types is found in the majority of cases. Preliminary testwork on this type of water using membrane desalination processes revealed that only the seeded reverse osmosis type of process showed promise. To overcome certain process problems and high operating costs with this system, a novel membrane desalination technique incorporating seeded technology, called the SPARRO (slurry precipitation and recycle reverse osmosis) process, was developed. The novel features of the new process included; a lower linear slurry velocity in the membrane tubes, a lower seed slurry concentration, a dual pumping arrangement to a tapered membrane stack, a smaller reactor and a modified seed crystal and brine blow-down system. Evaluation of the SPARRO process and its novel features, over a five-year period, confirmed its technical viability for desalinating calcium sulphate-scaling mine water. The electrical power consumption of the process was approximately half that of previous designs, significantly improving its efficiency. Membrane performance was evaluated and was generally unsatisfactory with both fouling and hydrolysis dominating at times, although operating conditions for the membranes were not always ideal. The precise cause(s) for the membrane degradation was not established, but a mechanism for fouling (based upon the presence of turbidity in the mine water) and a hypothesis fora possible cause of hydrolysis (alluding to the presence of radionuclides in the mine water) were proposed. Product water from the SPARRO process has an estimated gross unit cost (including capital costs) of 383 c/m(3) (1994). |
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Desalination of calcium sulphate scaling mine water: Design and operation of the SPARRO process; Wos:A1996uh88100009; Times Cited: 5; ISI Web of Science |
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CBU @ c.wolke @ 17168 |
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86 |
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Ball, B.R. |
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Title |
Advanced oxidation treatment of mine drainage |
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Journal Article |
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1996 |
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Second International Symposium on Extraction and Processing for the Treatment and Minimization of Wastes – 1996 |
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363-376 |
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mine water treatment |
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An investigation of the effects of ozone and ozone-induced hydroxyl radical on reducing whole affluent toxicity is described and discussed relative to the application of ozone for industrial water treatment. Results from operation of an ozone system treating industrial affluent from a lead and zinc mine in Colorado are presented. The mine discharges 1,000 gpm of wastewater into a tributary of the Arkansas River and has historically exceeded Whole Effluent Toxicity (WET) limits and on occasion has exceeded numeric limits for copper, ammonia, and cyanide. Based on results of a Toxicity Identification Evaluation (TIE) conducted on the effluent and individual process waste streams, the source of effluent toxicity is believed to be primarily associated with organic reagents used in the milling process. |
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Advanced oxidation treatment of mine drainage; Isip:000078691700031; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 17173 |
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180 |
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Orava, D.A.; Swider, R.C. |
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Inhibiting acid mine drainage throughout the mine life cycle |
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Journal Article |
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1996 |
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CIM Bull. |
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89 |
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999 |
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52-56 |
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Umweltschutz Bergbau Erzaufbereitung Exploration Säure Industrieabwasser Oxidation Sulfid Kanada Wasserhaltung Aufbereitungsberge Waschberge |
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The technical knowledge and practical experience accumulated by industry and others in abating acid mine drainage (AMD) is being proactively applied at every phase of the mine life cycle. This paper traces the mine life cycle from exploration to post closure monitoring and maintenance, and reviews AMD abatement measures that have become an integral component of exploration and mining activities. Attention is increasingly being given to evaluating AMD potential as part of exploration work, and studies related to project feasibility and design. Mining, mineral processing and waste management options are selected taking into consideration their suitability to inhibit AMD. These inhibition measures are typically committed to in closure plans submitted at the permitting stage. Mines are operated and decommissioned, often progressively, as planned and in accordance with environmental protection policies. Es wird über das Problem der Säurebildung aus sulfidischen Aufbereitungsbergen und taubem Gestein im Verlauf des Existenzzyklus eines Bergwerkes berichtet. In Kanada werden seit etwa 10 Jahren intensive Forschungen für Vorhersage, Kontrolle und Eindämmung von Saürebildungen im Bergbau betrieben. Schwerpunkt ist dabei die sulfidische Oxidation (2FeS2 + 7O2 = 2FeSO4 + 2H2SO4) unter Einwirkung verschiedener physikalischer, geochemischer und biologischer Faktoren. Diese Reaktion führt zu einem Komplex weiterer chemischer Reaktionen unter Bildung von zusätzlicher Säure und Lösung von Metallen. Daraus ergeben sich zwei Hauptmöglichkeiten diesen Prozeß zu steuern: 1. die Sulfidoxidation verhindern, 2. den Oxidationsprozeß verlangsamen. Mit dem heutigen Wissensstand ist es möglich, das Säurebildungspotential von Aufbereitungsbergen zu bestimmen, den Prozeß der Sulfidoxidation von Mineralen unter bestimmten physikalischen, geochemischen und biologischen Bedingungen zu modellieren und die Säurebildung von Aufbereitungsbergen und sulfidischen Gesteinen einzudämmen. Im einzelnen werden Maßnahmen zur Bewertung des Säurebildungspotentials und zur Kontrolle und Reduzierung dieses Prozesses während der Existenzstadien Exploration, Durchführbarkeitsstudie und Genehmigung, Gewinnung und Stillegung eines Bergwerkes erläutert. An Beispielen wird gezeigt, daß bei rechtzeitgem Erkennen des Säurebildungspotentials in der Phase der Exploration Verfahren und Maßnahmen bezüglich Aufbereitung, Umgang mit Aufbereitungsbergen ausgewählt werden können. |
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SENES Consultants, Richmond Hill, CA; Swider Consulting Engineers, Toronto, CA |
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0317-0926 |
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Inhibiting acid mine drainage throughout the mine life cycle; 11083, BERG , 31.07.96; Words: 383; U9608 0110 586; 5 Seiten, 3 Bilder, 3 Tabellen, 16 Quellen 3UXX *Belastung von Wasser, Wasserreinhaltung, Abwasser* 3ATB *Technikfolgenabschätzung* 3MZ *Bergbau, Tunnelbau, Erdöl /Erdgasförderung, Bohrtechnik* 3AXF *Forschungsentwicklung, Forschungspolitik*; BERG, Copyright FIZ Technik e.V.; EN Englisch |
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CBU @ c.wolke @ 17610 |
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278 |
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Author |
Matsuoka, I. |
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Title |
Mine drainage treatment |
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Journal Article |
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Year |
1996 |
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Shigen to Sozai = Journal of the Mining and Materials Processing Institute of Japan |
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112 |
Issue |
5 |
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273-281 |
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Keywords |
acid mine drainage; Asia; Far East; Japan; mine dewatering; mine drainage; mines; pollution; water treatment 22, Environmental geology |
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0916-1740 |
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Mine drainage treatment; 1997-062437; References: 66; illus. incl. 9 tables Japan (JPN); GeoRef; Japanese |
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CBU @ c.wolke @ 6342 |
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305 |
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Author |
Mataix Gonzalez, C.; Escribano Bombin, M. |
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Sistemas de control y tratamiento de drenajes acidos de minas. Control and treatment systems for acid mine drainage |
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Journal Article |
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1996 |
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Ingeopres |
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42 |
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15-18 |
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acid mine drainage; dredging; effects; inorganic acids; metal ores; mines; pollution; sewage; sulfuric acid; water pollution; water treatment 22, Environmental geology |
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1136-4785 |
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Sistemas de control y tratamiento de drenajes acidos de minas. Control and treatment systems for acid mine drainage; 1997-066186; References: 7; 4 plates Spain (ESP); GeoRef; Spanish |
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CBU @ c.wolke @ 6385 |
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306 |
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