search for "Bauxsol" in .pdf files (hard core holders read all, recommended)
============
Savage River Rehabilitation Project - Strategic Plan - December 2001
Evaluate use of Bauxsol at Savage River - dosing systems, mixing with
magnesite, etc
McConchie (2001) reported the results of tests involving treatment of acid drainage from
the Savage River Mine using BauxsolTM.
Acid drainage from North Dump Drain was treated using the following methods:
• Passing through a permeable reactive barrier containing BauxsolTM
• Direct addition of BauxsolTM followed by settling and passing through a sand filter
Excellent water quality results were achieved following treatment, with copper levels
being reduced to 2-4 µg/l. The report claims that similar results were achieved using
water from Old Tailings Dam seepage (west) though the results are not presented.
[The report does not indicate the quantity of BauxsolTM consumed during the tests or the
residence time of the acid drainage in the permeable reactive barrier. Sludge settling
times and sludge volumes are also absent.]
The report notes that a source of red mud for conversion to BauxsolTM is available at the
Comalco, Bell Bay site in Tasmania. The report also states that creation of effective
BauxsolTM blends using magnesite is likely to be feasible, though further test work is
required.
Page 36 of 50
Addition of BauxsolTM to standing water bodies is said to be both economic and proven
as a treatment methodolgy, however, the report acknowledges that the use of permeable
reactive barrier technology for the treatment of flowing acid drainage is at a very early
stage of development.
=================
from http://www.dpiwe.tas.gov.au/inter.nsf/WebPages/BHAN-53T4JD?open
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