Reporter 406, 22 September 1997


Better green than red

Green technology is being developed to tackle the ‘red menace’ of toxic waters caused by former tin and coal mines. Professor Rob Raiswell, of the University’s Department of Earth Sciences, told the Festival of an environmentally-friendly solution being tested in South Wales. First, the red metal-rich mine drainage water is channelled into artificial wetlands filled with mushroom compost and planted with reeds. Then various microbes treat the drainage as food, reverse the original oxidation, and remove some of the water’s harmful properties in the process.

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