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Measuring Turbidity in the Laser Age
Author(s) -
Sadar Michael,
Cason Steve,
Engelhardt Terry
Publication year - 2009
Publication title -
opflow
Language(s) - English
Resource type - Journals
eISSN - 1551-8701
pISSN - 0149-8029
DOI - 10.1002/j.1551-8701.2009.tb02339.x
Subject(s) - turbidity , nephelometer , laser , environmental science , process engineering , filter (signal processing) , process (computing) , particle (ecology) , computer science , remote sensing , optics , materials science , engineering , geography , light scattering , computer vision , physics , geology , scattering , oceanography , operating system
This article discusses turbidimeter technology advancements that now include laser nephelometers whose detection capabilities approach the functionality of particle counters. Laser nephelometers can detect ultra‐low turbidity changes, as well as filter deterioration and breakthrough. Increasingly, these capabilities allow turbidity and particle‐counting measurements to become complementary technologies. In addition, a laser nephelometer plays two roles at conventional water treatment facilities by providing accurate, on‐line turbidity measurements to meet regulatory reporting requirements and serving as a sensitive, highly accurate process instrument for optimizing filter performance and run times.