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Title: Light scattering in sewage effluent: a study of the effects of angle of scatter an common light sources
Author: S. Russell
Author: E. Hatton
Document Type: Monograph
Traditionally suspended solids have been measured for consent purposes for effluent discharge. However, conventional measurement techniques are too slow-and are not amenable to continuous monitoring. Consequently, it has been recommended in the Discharge Consent and Compliance Policy that turbidity is used as a general surrogate for suspended solids and included into consent policy. Turbidity is an expression of the optical property of a liquid that causes light to be scattered and absorbed rather than transmitted in straight lines through a sample. There are three main techniques currently used in the measurement of turbidity and the method used, sample condition and instrument design all have an influence on the repeatability of the measurement. The report describes an investigation into establishing the relationship between light scattered at 90 degrees, 25 degrees and low angles with gravimetric suspended solids for treated sewage final effluent.
Publisher: National Rivers Authority
Publication Date: 1993
Publication Place: Bristol
Subject Keywords: EffluentsSewageField experimentationTurbidimetry
Extent: 76
Total file downloads: 26

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