| Records |
| Author |
Swoboda-Colberg, N.; Colberg, P.; Smith, J.L. |
| Title |
Constructed vertical flow aerated wetlands |
Type |
RPT |
| Year |
1994 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
acid mine drainage; aeration; Butte Montana; carbonate rocks; case studies; clastic sediments; Clear Creek County Colorado; Colorado; construction; controls; fluid dynamics; gravel; heavy metals; Idaho Springs Colorado; limestone; Montana; pollution; rates; sedimentary rocks; sediments; Silver Bow County Montana; substrates; tailings; United States; waste water; water; water management; water quality; water treatment; wetlands 22, Environmental geology |
| Abstract |
In the report, wetland technology is described in which the main reactive layer is limestone gravel (rather than organic material) which is overlain by a fine gravel filter and soil. The three-year project included laboratory and field studies. Vertical aerated wetlands, simulated by columns, constructed in the field and in the laboratory, were operated during the project. The report presents a summary of results given in previous reports and summaries of results obtained using water from Butte, MT, and field studies at the Rockford Tunnel, near Idaho Springs, CO. |
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University of Wyoming, L.W.Y.U.S. performer |
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| Notes |
Constructed vertical flow aerated wetlands; 1998-003373; GeoRef; English; Final report. Grant DI-196561 National Technical Information Service, (703)605-6000, order number PB96-196811NEG, Springfield, VA, United States |
Approved  |
no |
| Call Number |
CBU @ c.wolke @ 6506 |
Serial |
226 |
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| Author |
Sottnik, P.; Sucha, V. |
| Title |
Moznosti upravy kysleho banskeho vytoku loziska Banska Stiavnica-Sobov. Remediation of acid mine drainage from Sobov Mine, Banska Stiavnica |
Type |
Journal Article |
| Year |
2001 |
Publication |
Mineralia Slovaca |
Abbreviated Journal |
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| Volume |
33 |
Issue |
1 |
Pages |
53-60 |
| Keywords |
acid mine drainage aluminum Banska Stiavnica Slovakia Central Europe copper Eh Europe gangue heavy metals iron manganese metals metamorphic rocks oxidation pH pollution precipitation pyrite quartzites reduction remediation Slovakia Sobov Mine sulfides vegetation waste disposal wetlands 22, Environmental geology |
| Abstract |
A waste dump formed during the exploitation of quartzite deposit in Sobov mine (Slovakia) produces large quantity of acid mine drainage (AMD) which is mainly a product of pyrite oxidation. Sulphuric acid--the most aggressive oxidation product--attacks gangue minerals, mainly clays, as well. This process lead to a sharp decrease of the pH values (2-2.5) and increase of Fe, Al and SO (super 2-) (sub 4) contents (TDS = 20-30 mg/1). Passive treatment system was designed to remediate AMD. Chemical redox reactions along with microbial activity cause a precipitation of mobile contamination into a more stable forms. The sulphides are formed in the anaerobic cell, under reducing conditions. Fe-, Al- oxyhydroxides are precipitated in the aerobic part of the system. Precipitation decreases the Fe and Al contents along with immobilization of some heavy metal closely related to oxyhydroxides. Besides oxidation, the wetland vegetation is an active part of on aerobic cell. The system has been working effectively since September 1999. The pH values of outflowing water are apparently higher (6.2-6.8) and contents of dissolved elements (Fe from 2.260 to 4.1; Al from 900 to 0.18; Mn from 51 to 23; Cu from 4.95 to 0.03 mg/l) is significantly lowers. |
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0369-2086 |
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Moznosti upravy kysleho banskeho vytoku loziska Banska Stiavnica-Sobov. Remediation of acid mine drainage from Sobov Mine, Banska Stiavnica; 2004-084366; References: 21; illus. incl. sects. Slovak Republic (SVK); GeoRef; Slovakian |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 16534 |
Serial |
235 |
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| Author |
Schwartz, M.O.; Ploethner, D. |
| Title |
From mine water to drinking water; heavy-metal removal by carbonate precipitation in the Grootfontein-Omatako Canal, Namibia |
Type |
Book Chapter |
| Year |
1999 |
Publication |
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Abbreviated Journal |
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Issue |
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Pages |
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| Keywords |
Africa; aluminum; cadmium; canals; carbonates; copper; drinking water; geochemistry; Grootfontein-Omatako Canal; heavy metals; hydrochemistry; iron; lead; manganese; metallogenic provinces; metals; mine drainage; mineral deposits, genesis; mines; Namibia; policy; precipitation; purification; Southern Africa; transport; water management; water treatment 22, Environmental geology |
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Bundesanst. fuer Geowiss. und Rohstoffe |
Place of Publication |
Hanover |
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From mine water to drinking water; heavy-metal removal by carbonate precipitation in the Grootfontein-Omatako Canal, Namibia; GeoRef; English; 2002-033925; International congress on Mine, water and environment, Seville, Spain, Sept. 13, 1999 References: 7; 2 tables, sketch maps |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 5929 |
Serial |
250 |
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| Author |
Sato, D.; Tazaki, K. |
| Title |
Calcification treatment of mine drainage and depositional formula of heavy metals |
Type |
Journal Article |
| Year |
2000 |
Publication |
Chikyu Kagaku = Earth Science |
Abbreviated Journal |
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| Volume |
54 |
Issue |
5 |
Pages |
328-336 |
| Keywords |
acid mine drainage Asia calcification deposition ettringite Far East heavy metals Ishikawa Japan Japan lime Ogoya Mine pollution sulfates waste water water treatment 22, Environmental geology |
| Abstract |
Depositional formula of heavy metals after disposal of the mine drainage from the Ogoya Mine in Ishikawa Prefecture, Japan, was mineralogically investigated. Strong acidic wastewater (pH 3.5) from pithead of the mine contains high concentration of heavy metals. In this mine, neutralizing coagulation treatment is going on by slaked lime (calcium hydroxides: Ca(OH) (sub 2) ). Core samples were collected at disposal pond to which the treated wastewater flows. The core samples were divided into 44 layers based on the color variation. The mineralogical and chemical compositions of each layer were analyzed by an X-ray powder diffractometer (XRD), an energy dispersive X-ray fluorescence analyzer (ED-XRF) and a NCS elemental analyzer. The upper parts are rich in brown colored layers, whereas discolored are the deeper parts. The color variation is relevant to Fe concentration. Brown colored core sections are composed of abundant hydrous ferric oxides with heavy metals, such as Cu, Zn, and Cd. On the other hand, S concentration gradually increases with depth. XRD data indicated that calcite decreases with increasing depth, and ettringite is produced at the deeper parts. Cd concentration shows similar vertical profile to those of calcite and ettringite. The results revealed that hydrous ferric oxides, calcite and ettringite are formed on deposition, whereby incorporating the heavy metals. |
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Edition |
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| ISSN |
0366-6611 |
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| Notes |
Calcification treatment of mine drainage and depositional formula of heavy metals; 2001-032610; References: 19; illus. incl. 1 table, sketch map Japan (JPN); GeoRef; Japanese |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 16543 |
Serial |
252 |
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| Author |
Niyogi, D.K.; McKnight, D.M.; Lewis, W.M., Jr.; Kimball, B.A. |
| Title |
Experimental diversion of acid mine drainage and the effects on a headwater stream |
Type |
Journal Article |
| Year |
1999 |
Publication |
Water-Resources Investigations Report |
Abbreviated Journal |
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| Volume |
Wri 99-4018-A |
Issue |
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Pages |
123-130 |
| Keywords |
abandoned mines acid mine drainage algae benthonic taxa biomass biota Colorado experimental studies heavy metals Lake County Colorado Leadville Colorado metals mines pH Plantae pollution remediation Saint Kevin Gulch Colorado tracers United States USGS water zinc |
| Abstract |
An experimental diversion of acid mine drainage was set up near an abandoned mine in Saint Kevin Gulch, Colorado. A mass-balance approach using natural tracers was used to estimate flows into Saint Kevin Gulch. The diversion system collected about 85 percent of the mine water during its first year of operation (1994). In the first 2 months after the diversion, benthic algae in an experimental reach (stream reach around which mine drainage was diverted) became more abundant as water quality improved (increase in pH, decrease in zinc concentrations) and substrate quality changed (decrease in rate of metal hydroxide deposition). Further increases in pH to levels above 4.6, however, led to lower algal biomass in subsequent years (1995-97). An increase in deposition of aluminum precipitates at pH greater than 4.6 may account for the suppression of algal biomass. The pH in the experimental reach was lower in 1998 and algal biomass increased. Mine drainage presents a complex, interactive set of stresses on stream ecosystems. These interactions need to be considered in remediation goals and plans. |
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0092-332x |
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| Notes |
Experimental diversion of acid mine drainage and the effects on a headwater stream; 2; GeoRef: 2001-017199 als Datei vorhanden 4 Abb.; VORHANDEN | AMD ISI | Wolkersdorfer |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 17398 |
Serial |
286 |
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