The potential for semi-passive mine water treatment by CO2 stripping at Ynysarwed, S Wales

and Watson, Ian 2011. The potential for semi-passive mine water treatment by CO2 stripping at Ynysarwed, S Wales. Presented at: International Mine Water Association Symposium – Mine Water and Innovative Thinking, Sydney, Nova Scotia, Canada, 5 – 9 September 2010. Published in: Wolkersdorfer, Christian and Freund, Antje eds. Mine Water and Innovative Thinking. Cape Breton, Canada: CBU Press, pp. 123-126.

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Abstract

In the spring the of 1993 the Ynysarwed mine water discharge in south Wales became a serious problem affecting a 12km length of the Neath Canal. As a result of the severity of the discharge, pH 3.5, 400mg/l Fe, a combination of active and passive treatment steps were installed. Chemical dosing was stopped in 2009 as conditions had improved pH>5, 100mg/l Fe. The existing mine water treatment scheme is in the process of being reviewed. Different treatment options are being considered including stripping dissolved Co₂ from the mine water, thereby maintaining mildly acidic pH and accelerating Fe(II) oxidation rates.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Schools > Engineering
Subjects:	Q Science > QD Chemistry Q Science > QE Geology T Technology > TN Mining engineering. Metallurgy
Uncontrolled Keywords:	oxidation rate ; Co₂ degassing ; aeration ; active treatment.
Publisher:	CBU Press
ISBN:	9781897009475
Last Modified:	21 Oct 2022 09:56
URI:	https://orca.cardiff.ac.uk/id/eprint/38400

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