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The Long Beach Water Department (LBWD) is conducting comprehensive research toevaluate seawater desalination integration issues. Although distribution systemcorrosion has historically been the main concern with integrating desalinated seawater,recent research has identified a detrimental phenomenon associated with rapid loss indisinfectant residual when chloraminating desalinated seawater. This residual instabilitynot only reduces the system's ability to suppress microbial activity, it also raisesconcerns with nitrification. In addition, the need to rechlorinate to recover the residualloss can impact disinfection byproduct (DBP) formation, as presence of higher bromidecoupled with natural organic matter in the system may result in substantial formation ofDBPs. Extensive bench top evaluations were performed using various synthetic watersand end-quality desalinated seawaters to understand the behavior of chloramination ofwaters containing bromide and to quantify extent of the residual stability impacts. Theresults of these investigations are discussed in this paper. Includes 11 references, table, figures.

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Edition: Vol. - No. Published: 06/17/2005 Number of Pages: 16File Size: 1 file , 1.2 MB