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Toxicological evaluation of acid mine drainage waste water treatment options at Mt Lyell, Tasmania: Mount Lyell Acid Drainage Remediation Program,
Davies, PE and Cook, LSJ and Risdon, M (2000) Toxicological evaluation of acid mine drainage waste water treatment options at Mt Lyell, Tasmania: Mount Lyell Acid Drainage Remediation Program,. Project Report. DPIWE, Hobart.
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A primary aim of the development of an acid drainage treatment plant at Mt Lyell is the
partial to complete rehabilitation of aquatic ecosystems in the lower King River
(downstream of the junction with the Queen River) and upper Macquarie Harbour. A
number of primary environmental remediation targets have been identified for this
system. These include partial or complete recovery of macroinvertebrate and fish
communities in the lower King River, partial or complete recovery of native fish
recruitment into tributaries of the lower King River, no mortality or inhibition of growth
of salmonids in aquacultural operations in northern Macquarie Harbour.
A suite of toxicological tests were conducted to assess the relative success of three main
treatment options for wastewaters from the proposed treatment plant at achieving the
proposed remediation targets. Three 'test waters' were prepared from acid mine drainage
(AMD) waters collected from the Mt Lyell lease. They were: pH 3.6 with sulphidisation
(to simulate Cu removal by sulphide generating bacteria), pH 7.5 and pH 6.3. The latter
two test waters were prepared by neutralisation of AMD with quicklime, followed by
separation of supernatant from precipitates. The pH 3.6 test water was produced by
partial neutralisation with limestone slurry, treatment of supernatant with sodium
hydrogen sulphide and separation of supernatant.
|Item Type:||Report (Project Report)|
|Keywords:||Acid mine drainage, Tasmania, Mount Lyell, toxicology, remediation|
|Date Deposited:||26 Nov 2006|
|Last Modified:||18 Nov 2014 03:12|
|Item Statistics:||View statistics for this item|
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