| Records |
| Author |
Van Hille, R.P.; Boshoff, G.A.; Rose, P.D.; Duncan, J.R. |
| Title |
A continuous process for the biological treatment of heavy metal contaminated acid mine water |
Type |
Journal Article |
| Year |
1999 |
Publication |
Resour. Conserv. Recycl. |
Abbreviated Journal |
|
Volume  |
27 |
Issue |
1-2 |
Pages |
157-167 |
| Keywords |
mine water treatment biological treatment heavy metal acid mine water alkaline precipitation green-algae chlorella |
| Abstract |
Alkaline precipitation of heavy metals from acidic water streams is a popular and long standing treatment process. While this process is efficient it requires the continuous addition of an alkaline material, such as lime. In the long term or when treating large volumes of effluent this process becomes expensive, with costs in the mining sector routinely exceeding millions of rands annually. The process described below utilises alkalinity generated by the alga Spirulina sp., in a continuous system to precipitate heavy metals. The design of the system separates the algal component from the metal containing stream to overcome metal toxicity. The primary treatment process consistently removed over 99% of the iron (98.9 mg/l) and between 80 and 95% of the zinc (7.16 mg/l) and lead (2.35 mg/l) over a 14-day period (20 l effluent treated). In addition the pH of the raw effluent was increased from 1.8 to over 7 in the post-treatment stream. Secondary treatment and polishing steps depend on the nature of the effluent treated. In the case of the high sulphate effluent the treated stream was passed into an anaerobic digester at a rate of 4 l/day. The combination of the primary and secondary treatments effected a removal of over 95% of all metals tested for as well as a 90% reduction in the sulphate load. The running cost of such a process would be low as the salinity and nutrient requirements for the algal culture could be provided by using tannery effluent or a combination of saline water and sewage. This would have the additional benefit of treating either a tannery or sewage effluent as part of an integrated process. |
| 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 |
0921-3449 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
Jul; A continuous process for the biological treatment of heavy metal contaminated acid mine water; Isi:000081142100017; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/9937.pdf; AMD ISI | Wolkersdorfer |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 9937 |
Serial |
26 |
| Permanent link to this record |
| |
|
| |
| Author |
Li, L.; Jiang, Y.; Guo, Y. |
| Title |
Research on a comprehensive industrialization technology for the treatment of mining water containing sulfate ions |
Type |
Journal Article |
| Year |
1999 |
Publication |
Meitian Dizhi Yu Kantan = Coal Geology & Exploration |
Abbreviated Journal |
|
| Volume |
27 |
Issue |
6 |
Pages |
51-53 |
| Keywords |
acid mine drainage; coal mines; mines; pollution; purification; sulfate ion; technology; water pollution; water treatment 22, Environmental geology |
| Abstract |
A method using a barium reagent was developed for the purification of the higher-sulphate mine water. |
| 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 |
1001-1986 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
Research on a comprehensive industrialization technology for the treatment of mining water containing sulfate ions; 2005-057894; References: 5 China (CHN); GeoRef; Chinese |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 6097 |
Serial |
316 |
| Permanent link to this record |
| |
|
| |
| Author |
Juby, G.J.G.; Schutte, C.F. |
| Title |
Membrane Life in a Seeded-slurry Reverse Osmosis System |
Type |
Journal Article |
| Year |
2000 |
Publication |
Water Sa |
Abbreviated Journal |
|
| Volume |
26 |
Issue |
2 |
Pages |
239-248 |
| Keywords |
mine water treatment desalination |
| Abstract |
Membrane replacement can be a major operating cost of a membrane plant. During the development of a novel desalination technique (the SPARRO process) for treating calcium sulphate scaling mine waters the expected life of tubular cellulose acetate membranes operating in the seeded-slurry mode was investigated.During four operating phases of the plant over a five-year period more than 9 000 h of operating data were obtained. Performance data showed that each operating phase was dominated by either membrane fouling or membrane hydrolysis. Membrane fouling was observed to begin near the front-end of the membrane stack and proceed towards the back. Hydrolysis, on the other hand, occurred first in the tail end of the stack and moved backwards towards the Front end modules. Although two detailed membrane autopsies were carried out no definitive statement can be made in respect of the causes of either membrane hydrolysis or membrane fouling. However, suggestions are presented to explain the observed fouling phenomenon in relation to the turbidity of the pretreated feed water and the presence of chlorine. It is proposed that the presence of radioactive isotopes in the mine water which become concentrated in the process contributes to the observed membrane hydrolysis. A membrane life of up to two years is projected for an improved pretreatment arrangement. |
| 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 |
0378-4738 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
Membrane Life in a Seeded-slurry Reverse Osmosis System; Isi:000087101400013; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/9715.pdf; AMD ISI | Wolkersdorfer |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 9715 |
Serial |
8 |
| Permanent link to this record |
| |
|
| |
| Author |
Zhuang, J.M. |
| Title |
Lignor(TM) process for acidic rock drainage treatment |
Type |
Journal Article |
| Year |
2004 |
Publication |
Environ. Technol. |
Abbreviated Journal |
|
| Volume |
25 |
Issue |
9 |
Pages |
1031-1040 |
| Keywords |
mine water treatment |
| Abstract |
The process using lignosulfonates for acidic rock drainage (ARD) treatment is referred to as the Lignor(TM) process. Lignosulfonates are waste by-products produced in the sulfite pulping process. The present study has shown lignosulfonates are able to protect lime from developing an external surface coating, and hence to favor its dissociation. Further, the addition of lignosulfonates to ARD solutions increased the clotting and settling rate of the formed sludge. The capability of lignosulfonates to form stable metal-lignin complexes makes them very useful in retaining metal ions and thus improving the long-term stability of the sludge against leaching. The Lignor(TM) process involves metal sorption with lignosulfonates, ARD neutralization by lime to about pH 7, pH adjustment with caustic soda to 9.4 – 9.6, air oxidation to lower the pH to a desired level, and addition of a minimum amount of FeCl3 for further removal of dissolved metals. The Lignor(TM) process removes all concerned metals (especially Al and Mn) from the ARD of the Britannia Mine (located at Britannia Beach, British Columbia, Canada) to a level lower than the limits of the B.C. Regulations. Compared with the high-density sludge (HDS) process, the Lignor(TM) process has many advantages, such as considerable savings in lime consumption, greatly reduced sludge volume, and improved sludge stability. |
| 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 |
Lignor(TM) process for acidic rock drainage treatment; Wos:000224971800006; Times Cited: 0; ISI Web of Science |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 16998 |
Serial |
117 |
| Permanent link to this record |
| |
|
| |
| Author |
Holtzhausen, L. |
| Title |
Minewater treatment technology revved up |
Type |
Journal Article |
| Year |
2005 |
Publication |
Water Sewage and Effluent |
Abbreviated Journal |
|
| Volume |
25 |
Issue |
2 |
Pages |
24-26 |
| Keywords |
Geobase: Related Topics geobase: related topics (901) water treatment |
| Abstract |
|
| 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 |
0257-8700 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
Trade- Note; Minewater treatment technology revved up; 2710582; South-Africa; Geobase |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 10344 |
Serial |
348 |
| Permanent link to this record |
