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AWWA ACE71076

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AWWA ACE71076 Investigations of Water Quality in Relation to LPHO Lamp Quartz Sleeve Fouling

Conference Proceeding by American Water Works Association, 11/01/2009

Messman, Megan; Smith, Paul D.; Kroll, Gary; Rego, Carol; Malenfant, Anne; Becker, William; Valade, Matthew; Farabaugh, Steve

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This powerpoint presentation begins by providing a brief overview of the Catskill and Delaware Water System and the fouling pilot study objectives that included: examining the sleeve fouling potential including seasonal effects and the impact of pre-chlorination, the impact of chlorine detention time, and the impact of water chemistry (pH, fluoride); and, the operational impact related tocleaning frequency. The fouling pilot study layout included 3 trains, the first two of which are the focus of this presentation:Train 1 - ITT/Wedeco LPHO (Spektrotherm Lamps) andtwo parallel units, Unit A chlorinated; and,Train 2 - Trojan MP, one unit, chlorinated. A summary of pilot study runs is presented, along with operating parameters. The operational impact is provided along with pilot conclusions: chlorination with sodium hypochlorite upstreamof the ultraviolet (UV) units increases fouling; seasonal water temperature impacts fouling; longer chlorine detention time may decreasefouling potential; and, addition of fluoride and/or pH suppressiondecreases fouling potential. Includes tables, figures.

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Edition: Vol. - No. Published: 11/01/2009 Number of Pages: 28File Size: 1 file , 1.9 MB