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Title: Mixing zone case study Note 48
Author: S.C. Nixon
Author: D. Munro
Author: D.B. Ashby-Crane
Author: M.A. Wheeler
Document Type: Monograph
The control of industrial discharges to fresh and saline waters requires the setting of appropriate consent conditions. In the UK this is done by applying the Environmental Quality Objective or Environmental Quality Standard approach and, in the case of discharges into tidal waters, by the designation of a mixing zone within which it is recognised that the EQS may be exceeded. It is the responsibility of the NRA, as the pollution control authority, to determine whether a mixing zone is of an acceptable size or not. The setting of the mixing zone in tidal waters will often entail the use of mathematical models of the discharge which must be capable of predicting the distribution of contaminants brought about by tidal movements and dispersion. There must, therefore, be confidence in the models produced, or at least knowledge of the level of certainty associated with predictions. The objective of this project was to test, by case study field surveys, the efficacy of a mathematical model in defining the mixing zone around a specific estuarine industrial discharge.
Publisher: National Rivers Authority
Publication Date: 1993
Publication Place: Bristol
Subject Keywords: Industrial emissionEstuariesWater qualityModelsEnvironmental monitoringCoastal waters
Geographic Keywords: HumberHull and East Riding catchment
Extent: 27
Total file downloads: 311

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