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首页> 外文期刊>American Water Works Association Journal >Leachability of regulated metals from cement-mortar linings
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Leachability of regulated metals from cement-mortar linings

机译：水泥砂浆衬里中限制金属的浸出性

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摘要

A laboratory study was conducted to test the leachability of regulated metals from cement-mortar linings inside drinking water pipes. Faucet water of known quality was introduced in the test pipes and maintained in static, pressurized conditions for extended periods of time. Water samples were frequently drawn from the pipes and tested for metals and other water quality parameters during the test periods. Significant amounts of barium, cadmium, and chromium leached out from the cement-mortar linings in two of the three test pipes during the first 14 days of water stagnation. Barium and chromium continued to leach out at detectable levels as the pipes were subsequently refilled. The authors recommend that the water industry be selective in choosing cement for lining pipes.
机译：进行了一项实验室研究，以测试饮用水管道内水泥砂浆衬里中规定金属的浸出性。将质量已知的龙头水引入测试管，并在静态，加压条件下保持较长时间。在测试期间，经常从管道中抽取水样并测试金属和其他水质参数。在水停滞的前14天中，从三个测试管中的两个中的水泥砂浆衬里中浸出了大量的钡，镉和铬。随后重新填充管道时，钡和铬继续以可检测的水平浸出。作者建议水工业在选择衬管水泥时应有选择性。

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