Performance and review of passive minewater treatment sites, Pelenna Valley, Wales

Bannister, Alyson, Brabham, Peter, Jones, Timothy ORCID: https://orcid.org/0000-0002-4466-1260 and Bowell, Robert 2018. Performance and review of passive minewater treatment sites, Pelenna Valley, Wales. Presented at: 11th ICARD | IMWA | WISA MWD 2018 Conference – Risk to Opportunity, Pretoria, 10-14 September 2018. Published in: Wolkersdorfer, Ch, Sartz, L, Weber, A, Burgess, J and Tremblay, G eds. Proceedings of the 11th ICARD IMWA MWD Conference - Risk to Opportunity. , vol.1 South Africa: Tshwane University of Technology (TUT), pp. 84-91.

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Abstract

A series of five constructed passive wetlands were constructed between 1995-1999 in the Pelenna valley, South Wales to treat various minewater discharges from abandoned coal mines. Two of the wetlands, Whitworth No.1 and Garth Tonmawr, have been compared to assess their long-term performance over their 20-year design life as well as their individual cell performance. The wetlands have not performed exactly as designed but over the long-term they have achieved the required remediation targets of pH 6-9 and dissolved iron of less than 1 mg/L in the Afon Pelenna downstream of the wetlands. It is concluded that the more complex the cell design the less likely the cell will operate for its design life and more maintenance will be required.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Earth and Environmental Sciences
Subjects:	Q Science > QE Geology
Publisher:	Tshwane University of Technology (TUT)
ISBN:	978-0-620-80650-3
Related URLs:	http://www.INAP.com.au http://www.IMWA.info http://www.WISA-MWD.org
Last Modified:	24 Oct 2022 07:52
URI:	https://orca.cardiff.ac.uk/id/eprint/116165

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