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Author (up) Perry, A.; Kleinmann, R.L.P. openurl 
  Title The use of constructed wetlands in the treatment of acid mine drainage Type Journal Article
  Year 1991 Publication Natural Resources Forum Abbreviated Journal  
  Volume 15 Issue 3 Pages 178-184  
  Keywords quality standard water treatment constructed wetland pond system acid mine drainage USA 1 Geography  
  Abstract US government regulations require that all effluents from industrial operations, including mining, meet certain water quality standards. Constructed wetlands have proven to be useful in helping to attain those standards. Application of this biotechnology to mine water drainage can reduce water treatment costs and improve water quality in streams and rivers adversely affected by acidic mine water drainage from abandoned mines. Over 400 constructed wetland water treatment systems have been built on mined lands largely as a result of research by the US Bureau of Mines. Wetlands are passive biological treatment systems that are relatively inexpensive to construct and require minimal maintenance. Chemical treatment costs are reduced sufficiently to repay the cost of construction in less than a year. The mine waste water is typically treated in a series of excavated ponds that resemble small marsh areas. The ponds are engineered to facilitate bacterial oxidation of iron. Ideally, the water then flows through a composted organic substrate supporting a population of sulphate-reducing bacteria which raises the pH. Constructed wetlands in the US are described – their history, functions, construction methodologies, applicabilities, limitations and costs. -Authors  
  Address US Department of the Interior, Bureau of Mines, 2401 E Street, NW Washington, DC 20241, USA  
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  Notes The use of constructed wetlands in the treatment of acid mine drainage; (0895945); 92h-01979; Using Smart Source Parsing pp; Geobase Approved no  
  Call Number CBU @ c.wolke @ 17569 Serial 272  
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