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Lookup NU author(s): Dr Charlotte Nuttall
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Mine water recovery has been taking place following the closure and cessation of pumping at Whittle Colliery (Northumberland) in January 1997. The predicted subsequent uncontrolled outbreaks of ferruginous water threatened to contaminate the Hazon Burn which is a tributary of the River Coquet, a valued amenity and water resource. Consequently, a pump and treat treatment system was commissioned by the UK Coal Authority and constructed late in 1999 by Entec UK Ltd. The treatment system receives water pumped from a purpose-drilled borehole which extends into the Whittle drift. In this way, mine water levels can be kept below predicted decant points (which would otherwise result in discharge at surface) and mine water can be treated in a designated setting. The passive treatment consists of an aeration chamber, two settling lagoons and three aerobic reedbeds. In order to minimise any risk to the River Coquet, this system was tested in January 2002 when river flows would be at their highest. Also due to the low ambient air temperature, the poorest performance of the system would be expected at this time of year. The system received pumped mine water at a range of flow rates over a period of six weeks and was very successful at removing iron. Following these promising results the system became permanently operational in the summer of 2002.
Author(s): Nuttall CA
Publication type: Article
Publication status: Published
Journal: Land Contamination and Reclamation
Year: 2003
Volume: 11
Issue: 2
Pages: 105-112
ISSN (print): 0967-0513
ISSN (electronic):
Publisher: EPP Publications
URL: http://dx.doi.org/10.2462/09670513.804
DOI: 10.2462/09670513.804
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