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首页> 外文会议>2011 Membrane technology conference amp; exposition. >Applying LBWD's Pipe Loop Test Results for the Integration of Desalinated Water
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Applying LBWD's Pipe Loop Test Results for the Integration of Desalinated Water

机译：将LBWD的管道回路测试结果应用于淡化水的整合

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The Long Beach Water Department (LBWD) has been performing extensive research into addressing the issue of the corrosiveness of desalinated seawater on distribution systems. Three approaches are available to predict corrosion impacts: corrosion indices, bench-scale tests, and pipe-loop testing. Corrosion indices are calculated based on water quality information and are easy to use; however, the results may not be entirely accurate. Bench-scale testing may be more accurate, but more time-consuming than using corrosion indices. Pipe-loop testing may be the best simulator of actual distribution system behavior, but it may be the most costly approach and therefore not feasible for many utilities.rnAll three approaches were tested at LBWD and correlation analysis performed. Results from the pipe-loop testing showed that adding 40 mg/L alkalinity and adjusting pH to 8 mitigated the corrosive effects. The blended water (50% of desalinated water + 50% distribution system water) results did not show an increase in the corrosion of iron, cement lined and copper pipes. The results were consistent with the prediction from corrosion indices (Langelier Saturation Index-LSI and Wollasonite Saturation Index-WSI) and bench scale tests. The pipe-loop testing also showed higher lead from leaded home plumbing components, which was consistent with corrosion indices (chloride-to-sulfate-mass-ratio-CSMR) prediction and bench scale tests. Overall, results from pipe-loop testing correlated well with prediction from corrosion indices and bench testing, verifying the value of indices and bench-testing in predicting corrosion.
机译：长滩水务局（LBWD）正在进行广泛的研究，以解决淡化海水对配电系统的腐蚀性问题。可以使用三种方法来预测腐蚀影响：腐蚀指数，工作台规模测试和管道回路测试。腐蚀指数是根据水质信息计算的，易于使用；但是，结果可能并不完全准确。基准测试可能比使用腐蚀指数更准确，但更耗时。管道回路测试可能是实际配电系统行为的最佳模拟器，但它可能是最昂贵的方法，因此对于许多公用事业公司不可行。所有这三种方法均在LBWD上进行了测试，并进行了相关分析。管道回路测试的结果表明，添加40 mg / L碱度并将pH值调整为8可减轻腐蚀作用。混合水（50％的淡化水+ 50％的分配系统水）的结果未显示铁，水泥衬里和铜管的腐蚀增加。结果与腐蚀指数（Langelier饱和指数-LSI和Wollasonite饱和指数-WSI）和实验室规模试验的预测结果一致。管道回路测试还显示，含铅家用管道部件中的铅含量较高，这与腐蚀指数（氯化物对硫酸盐的质量比-CSMR）预测值和实验室规模测试一致。总体而言，管道回路测试的结果与腐蚀指数和基准测试的预测密切相关，从而验证了指数和基准测试在预测腐蚀中的价值。

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