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Author Aube, B.C.; Zinck, J.M.
Title Comparison of AMD treatment processes and their impact on sludge characteristics Type Journal Article
Year 1999 Publication Abbreviated Journal
Volume Issue Pages
Keywords acid mine drainage cost decontamination density discharge geochemistry hydrochemistry leaching lime metals mine dewatering neutralization pH pollution remediation sludge stability tailings toxicity viscosity waste disposal water treatment 22, Environmental geology
Abstract Lime neutralisation for the treatment of acid mine drainage is one of the oldest water pollution control techniques practised by the mineral industry. Several advances have been made in the process in the last thirty years, particularly with respect to discharge concentrations and sludge density. However, the impact of different treatment processes on metal leachability and sludge handling properties has not been investigated. A study of treatment sludges sampled from various water treatment plants has shown that substantial differences can be related to the treatment process and raw water composition. This study suggests that sludge densities, excess alkalinity, long-term compaction properties, metal leachability, crystallinity and cost efficiency can be affected by the neutralisation process and specific process parameters. The study also showed that the sludge density and dewatering ability is not positively correlated with particle size as previously suggested in numerous studies. The treatment process comparisons include sludge samples from basic lime treatment, the conventional High Density Sludge (HDS) Process, and the Geco HDS Process.
Corporate Author Thesis
Publisher Place of Publication Sudbury Editor
Language Summary Language Original Title
Series Editor Series Title Mining and the Environment II Abbreviated Series Title
Series Volume Series Issue Edition
Area Expedition Conference
Notes 2002-060865; Sudbury '99; Mining and the environment II--Sudbury '99; L'exploitation miniere et l'environnement, Sudbury, ON, Canada, Sept. 13-17, 1999 References: 10; illus. incl. 6 tables; GeoRef; English Approved no
Call Number CBU @ c.wolke @ 16574 Serial 473
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