(1) School of Biological Sciences, University of Wales, Bangor LL57 2UW, UK
Abstract:
Passive (wetland) treatment of waters drainingabandoned and derelict mine sites has a numberof detractions. Detailed knowledge of many ofthe fundamental processes that dictate theperformance and longevity of constructedsystems is currently very limited and thereforemore research effort is needed before passivetreatment becomes an off-the-shelf technology.