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Water 2016, 8(1), 5; doi:10.3390/w8010005

Effects of Environmental Factors on the Disinfection Performance of a Wastewater Stabilization Pond Operated in a Temperate Climate

Department of Civil Engineering, Queen’s University, 58 University Ave., Kingston, ON K7L 3N6, Canada
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Academic Editor: Robin Slawson
Received: 19 October 2015 / Revised: 28 November 2015 / Accepted: 14 December 2015 / Published: 25 December 2015
View Full-Text   |   Download PDF [2884 KB, uploaded 25 December 2015]   |  

Abstract

Treatment in a wastewater stabilization pond (WSP) relies on natural purification processes, which can be sensitive to both location and climate. This study investigated the effects of three environmental factors, pH, dissolved oxygen (DO) and temperature, on disinfection efficiency in a WSP system consisting of three facultative cells, and operated in a temperate climate region, in Eastern Ontario, Canada. Indicator organism (Escherichia coli (E. coli)) removal in WSP systems is driven by a combination of different factors. Elevated pH and DO concentrations, which are attributed to the presence of algae, are important factors for effective disinfection. Therefore, the presence of algae in natural wastewater treatment systems can contribute appreciably to disinfection. Consequently, based on algal concentrations, removal efficiencies of pathogenic microorganisms during wastewater treatment over the course of a year can be highly variable, where higher removal efficiencies would be expected in summer and fall seasons. View Full-Text
Keywords: disinfection; wastewater treatment; environmental factors; pH; dissolved oxygen; temperature; E. coli disinfection; wastewater treatment; environmental factors; pH; dissolved oxygen; temperature; E. coli
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Liu, L.; Hall, G.; Champagne, P. Effects of Environmental Factors on the Disinfection Performance of a Wastewater Stabilization Pond Operated in a Temperate Climate. Water 2016, 8, 5.

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