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Design and Construction of an Ion-Exchange Denitrification Plant in South Staffordshire
Authors:I. J. FLETCHER  BSc  PhD   A. J. Woodward  CChem  FRSC   N. G. HENWOOD  BSc  PhD
Affiliation:Manager - Water and Wastewater Treatment, Hydrotechnica, Abbey Foregate, Shrewsbury (formerly with South Staffordshire Water Company).;Water Quality Manager, South Staffordshire Water Company, Green Lane, Walsall, West Midlands.;Manager - Water Treatment, Birwelco Ltd, Mucklow'Hill, Halesowen, West Midlands.
Abstract:Increasing concern about rising levels of nitrate in groundwater supplies and their subsequent removal to comply with EC drinking water standards has led to the construction of the first full-scale ion-exchange nitrate-removal plant in the UK by the South Staffordshire Waterworks Company.
This paper describes the development of the project from concept, through pilot-plant studies to final design, installation and commissioning. It explains the role of ion-exchange technologies, the use of recently developed nitrate-selective resins and the development of a novel dual regeneration system. The initial performance of the full-scale plant is discussed.
Keywords:Denitrification    drinking water    ion exchange    nitrate    water treatment
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