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Title: Discharge control and monitoring by biological techniques
Author: R. Butler
Author: N.J. Grandy
Document Type: Monograph
Currently, the control of discharges to UK surface waters is achieved principally by a chemical-specific approach. In this approach, maximum permitted concentrations of relevant polluting substances in the discharge are set and incorporated into the consent conditions. The discharge is then chemically monitored to ensure compliance with the consent standard(s). However, this approach is not well-suited to complex effluents which may be difficult, or even impossible, to characterise chemically. In recent years there has been an increasing interest in the application of Direct Toxicity Assessment (DTA) for the evaluation and control of effluent quality, and in the establishment of discharge consent conditions expressed in terms of toxicity rather than in chemical composition alone. In an earlier project in the Environmental Research Programme WRc produced a draft protocol for discharge control. The objective of this project is to test, by means of case-studies, the protocol for the application of biological procedures to the control and monitoring of complex discharges as an adjunct to chemical analysis.
Publisher: National Rivers Authority
Publication Date: 1990
Publication Place: Bristol
Subject Keywords: Biological monitoring techniquesToxicitySurface waterEffluents
Extent: 22; + appendices
Total file downloads: 293

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