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A novel fiber optical device for ultraviolet disinfection of water

Paper ID Volume ID Publish Year Pages File Format Full-Text
31135 44552 2008 5 PDF Available
Title
A novel fiber optical device for ultraviolet disinfection of water
Abstract

Since there are several problems in traditional UV disinfection techniques, a highly efficient, reliable and economical method, using quartz optical fibers to deliver UV light is proposed. The principle of the experimental setup is that ultraviolet rays are gathered by a reflector and converge on a light point, the diameter of approximately 5 mm. In this way UV light can be transferred into water to kill the bacteria in the water. This paper presents preliminary results on water disinfection using this new UV disinfection setup. Its suitability for application could be shown in experiments with E. coli (ATCC8099) as test microorganisms. We have optimized the distribution of the optical fibers in the water in bench-scale study. This result can provide guidance for pilot-scale and field-scale study of this new technique. The results show that the new technique had a good performance under different conditions as follows: (a) turbidity level = 10.2 NTU, (b) ferric ion concentration = 0.3 mg/L, and (c) humic acid concentration = 5 mg/L. The new technique provides a promising approach to disinfection treatment of drinking water.

Keywords
Disinfection; UV irradiation; Quartz optical fibers; Water treatment
First Page Preview
A novel fiber optical device for ultraviolet disinfection of water
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 92, Issue 1, 24 July 2008, Pages 42–46
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering