| |
Records |
Links  |
|
Author |
Tempel, R.N. |
|
| |
Title |
A quantitative approach to optimize chemical treatment of acid drainage using geochemical reaction path modeling methods: Climax Mine, Colorado |
Type |
Journal Article |
| |
Year |
2000 |
Publication |
ICARD 2000, Vols I and II, Proceedings |
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
1053-1058 |
|
| |
Keywords |
mine water treatment |
|
| |
Abstract |
The Climax Mine, near Leadville, Colorado treats acid drainage in a lime neutralization chemical treatment system. Chemical treatment has been successful in reducing the concentration of metals to below surface water discharge effluent limits, but lime usage has not been optimized. A geochemical modeling approach has been developed to increase the efficiency of lime neutralization. The modeling approach incorporates two steps: (1)calibration, and (2) calculation of amount of lime needed to increase pH and remove metals. Results of our work quantify the lime treatment process and improve our ability to predict overall water quality. |
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
A quantitative approach to optimize chemical treatment of acid drainage using geochemical reaction path modeling methods: Climax Mine, Colorado; Isip:000169875500102; Times Cited: 0; ISI Web of Science |
Approved |
no |
|
| |
Call Number |
CBU @ c.wolke @ 17102 |
Serial |
168 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Sibrell, P.L. |
|
| |
Title |
ARD remediation with limestone in a CO2 pressurized reactor |
Type |
Journal Article |
| |
Year |
2000 |
Publication |
ICARD 2000, Vols I and II, Proceedings |
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
1017-1026 |
|
| |
Keywords |
mine water treatment |
|
| |
Abstract |
We evaluated a new process for remediation of acid rock drainage (ARD). The process treats ARD with intermittently fluidized beds of granular limestone maintained within a continuous now reactor pressurized with CO2. Tests were performed over a thirty day period at the Toby Creek mine drainage treatment plant, Elk County, Pennsylvania in cooperation with the Pennsylvania Department of Environmental Protection. Equipment performance was established at operating pressures of 0, 34, 82, and 117 kPa using an ARD flow of 227 L/min. The ARD had the following characteristics: pH, 3.1; temperature, 10 OC; dissolved oxygen, 6.4 mg/L; acidity, 260 mg/L; total iron, 21 mg/L; aluminum, 22 mg/L; manganese, 7.5 mg/L; and conductivity, 1400 muS/cm. In all cases tested, processed ARD was net alkaline with mean pH and alkalinities of 6.7 and 59 mg/L at a CO2 pressure of 0 kPa, 6.6 and 158 mg/L at 34 kPa, 7.4 and 240 mg/L at 82 kPa, and 7.4 and 290 mg/L at 117 kPa. Processed ARD alkalinities were correlated to the settled bed depth (p <0.001) and CO2 pressure (p <0.001). Iron, aluminum, and manganese removal efficiencies of 96%, 99%, and 5%, respectively, were achieved with filtration following treatment. No indications of metal hydroxide precipitation or armoring of the limestone were observed. The surplus alkalinity established at 82 kPa was successful in treating an equivalent of 1136 L/min (five-fold dilution) of the combined three ARD streams entering the Toby Creek Plant. This side-stream capability provides savings in treatment unit scale as well as flexibility in treatment effect. The capability of the system to handle higher influent acidity was tested by elevating the acidity to 5000 mg/L with sulfuric acid. Net alkaline effluent was produced, indicating applicability of the process to highly acidic ARD. |
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
ARD remediation with limestone in a CO2 pressurized reactor; Isip:000169875500098; Times Cited: 0; ISI Web of Science |
Approved |
no |
|
| |
Call Number |
CBU @ c.wolke @ 17100 |
Serial |
169 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Jeffree, R.A. |
|
| |
Title |
Rum Jungle mine site remediation: Relationship between changing water quality parameters and ecological recovery in the Finniss River system |
Type |
Journal Article |
| |
Year |
2000 |
Publication |
ICARD 2000, Vols I and II, Proceedings |
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
759-764 |
|
| |
Keywords |
mine water treatment |
|
| |
Abstract |
The Finniss River system in tropical northern Australia has received 'acid-drainage' contaminants from the Rum Jungle uranium/copper mine site over the past 4 decades. Following mine-site remediation that began in 1981-82 the annual contaminant loads of sulfate, Cu, Zn and Mn have declined by factors of 3, 7, 5 and 4, respectively over 1990-93, compared to the 1969-74 pre-remediation loads. Comparison of the frequency distributions of contaminant water concentrations over these pre- and post-remedial periods have shown varying degrees of reduction in the highest levels following mine-site remediation, that are consistent with reductions in their annual-cycle loads. Among the three selected major metal contaminants the reductions in maximum water concentrations are most pronounced for Cu. The demonstrated reductions in the highest water concentrations of all four contaminants are also associated with previously reported ecological improvement in the Finniss River system, compared to the benchmark of environmental detriment established in 1973/74, prior to the beginning of remediation at the mine site. |
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
Rum Jungle mine site remediation: Relationship between changing water quality parameters and ecological recovery in the Finniss River system; Isip:000169875500073; Times Cited: 0; ISI Web of Science |
Approved |
no |
|
| |
Call Number |
CBU @ c.wolke @ 17098 |
Serial |
170 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Angelos, M.A.F. |
|
| |
Title |
Rehabilitation options for a Finnish copper mine |
Type |
Journal Article |
| |
Year |
2000 |
Publication |
International Conference on Practical Applications in Environmental Geotechnology Ecogeo 2000 |
Abbreviated Journal |
|
|
| |
Volume |
204 |
Issue |
|
Pages |
207-214 |
|
| |
Keywords |
mine water treatment |
|
| |
Abstract |
The Luikonlahti Copper mine is located near the town of Kaavi in eastern Finland, approximately 30 km northwest of Outokumpu. The copper sulphide ore deposit formed the northern most part of the Outokumpu assemblage. During 15 years of operation, between 1968 and 1983, a total of 33 km of underground tunnels and 5.5 km of underground shafts were excavated in the mining of 6.85 million metric tons of ore. The underground working are now flooded with 2 million m(3) of contaminated water and three open pits contain over 1 million m(3) of contaminated water. Five separate waste rock piles exist and are actively forming acid mine drainage (AMD). |
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
Rehabilitation options for a Finnish copper mine; Isip:000165636600026; Times Cited: 0; ISI Web of Science |
Approved |
no |
|
| |
Call Number |
CBU @ c.wolke @ 17620 |
Serial |
171 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Turek, M. |
|
| |
Title |
Recovery of NaCl from saline mine water in the ED-MSF system |
Type |
Journal Article |
| |
Year |
2000 |
Publication |
8th World Salt Symposium, Vols 1 and 2 |
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
471-475 |
|
| |
Keywords |
mine water treatment |
|
| |
Abstract |
A considerable part of water obtained by drainage of Polish coal-mines is saline which creates substantial ecological problems. The load of salt (mainly sodium chloride) amounts to 5 min t/year. Despite the utilisation of saline coalmine waters is considered to be the most adequate method of solving ecological problems caused by this kind of water in Poland there are only two installations utilising coal-mine waters and producing 100,000 t salt per year. In the case of the most concentrated waters, the so-called coal-mine brines, the method of concentrating by evaporation in twelve-stage expansion installation or vapour compression is applied, after which sodium chloride is manufactured. In the case of low salinity waters they are preconcentrated first by RO method. High energy consumption in above-mentioned methods of evaporation is a considerable restriction in the utilisation of coal-mine brines. An obstacle in the application of low energy evaporation processes, e.g. multi-stage flash, is the high concentration of calcium and sulphate ions in the coal-mine waters. |
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
978-0-444-50065-6 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
May; Recovery of NaCl from saline mine water in the ED-MSF system; Isip:000088786800075; Times Cited: 0; ISI Web of Science |
Approved |
no |
|
| |
Call Number |
CBU @ c.wolke @ 17092 |
Serial |
172 |
|
| Permanent link to this record |
