Water Environment Federation (WEF)

Liquid Disinfection Applications – Tips and Techniques for Success in Permanent and Temporary Applications

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Courtesy of Courtesy of Water Environment Federation (WEF)


The hazards of gaseous oxidizers for wastewater and water disinfection have driven interest to more manageable forms of treatment using liquids. Although traditionally used as a backup or failsafe method of supporting gaseous disinfection forms, liquids disinfectants are now coming into the mainstream as a primary source of disinfecting waste streams. Oxidizers are powerful disinfecting chemicals that have significant hazard risk if not installed correctly, and can be wasted if not administered correctly. This study examines both the hazards and required deployment for maximized operation. The more traditional forms of backup and support disinfection systems an be quickly adapted to temporary or remote use. With electronics being quite reasonable, the ability to automate remote equipment with triggering equipment is viable and quite effective for such applications. There are certain methods of deployment required in order to properly deploy a plume of disinfection in a temporary application to provide the most amount of biological kill with the least amount of chemical. These fine points will be outlined in the presentation. The replacement of gaseous oxidizers requires a large amount of stored chemical and diffusion in an effluent stream. Concerns such as temperature, location and consumption rate are all different using liquid disinfections as opposed to their gaseous counterparts. The same operational techniques used in gaseous disinfection application are substantially different from the handling of liquid oxidizers. The differences in the MRO and considerations for proper application are outlined. In all, the roadmap presented will provide the basic outline to consider in using liquid disinfections whether it be converting from temporary to permanent, or from gaseous to permanent liquid formats.

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