Title: Quantification of the relationship between effluent quality and biological quality : interim report for stage 1
Author: A. Gunby
Author: I. Milne
Author: M. Wheeler
Document Type: Monograph
Annotation: EA additional title info: regional operational investigation 579 - quantification of the relationship between effluent quality and biological quality
Abstract:
This Interim Report is the first formal output from Regional Operational Investigation 579, to
quantify the relationship between effluent quality and the biological quality of rivers. This
investigation was initiated to address the need to develop a methodology for relating sewage
treatment works effluent quality to biologically assessed water quality.
Procedures already exist within NRA Anglian Region for identifying STW effluents with the
greatest potential impact in terms of chemical quality. This takes the form of the Index of
Discharge Impact, which is calculated from the statistics of compliance with the River
Needs Consent and from an assessment of compliance of receiving waters with quality
standards. The RNC is a working estimate of the consent that may be needed in future to
achieve Water Quality Objectives. The IDI is used to prioritise discharges for targeting for
improvement and the ability to link biological data in with the assessment would substantially
enhance confidence in the methodology, hence the inception of this project.
Publisher: National Rivers Authority
Publication Date: 1996
Publication Place: Peterborough
Subject Keywords: Effluents; Sewage treatment; Water quality; Water quality measurements; Biological analysis; Data
Geographic Keywords: EA Anglian
Extent: 45
Permalink: http://www.environmentdata.org/archive/ealit:4220
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