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Magnetic Water Treatment to Inhibit Calcium Carbonate Scale Deposition in the Drainage System of an Old Tunnel in Seoul, South Korea

机译:磁性水处理,抑制韩国首尔旧隧道排水系统中的碳酸钙尺度沉积

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Drainage inlets at the Namsan #3 traffic tunnel in Seoul, South Korea were found to be clogged with calcium carbonate scale deposits. Officials were concerned the clogged drains would further stress the already deteriorating traffic tunnel and wanted to see if there were any practical and economical solutions in removing or preventing scale deposits. A tunnel drainage simulator was constructed to determine the feasibility of using magnets to inhibit, scale precipitation and deposition. Test results from the simulation show 6.0 and 4.4 g of deposited calcium carbonate in pipes inclined at 2° and 5° respectively, while magnetically treated water resulted in 10.8 and 4.3 g of deposited calcium carbonate in pipes inclined at 2° and 5° respectively. Calcium carbonate scale samples from the tunnel drainage test underwent x-ray diffraction analysis and showed the magnetically treated water to precipitate more aragonite. The solubility product and crystalline structures of calcite and aragonite are able to help explain tunnel drainage test results and suggest water flow velocity to be a potentially important factor in calcium scale inhibition if magnets are used.
机译:韩国首尔的Namsan#3交通隧道的排水入口被发现用碳酸钙垢沉积物堵塞。官员们担心堵塞的排水沟会进一步强调已经恶化的交通隧道,并希望了解是否存在任何实用和经济的解决方案,以删除或预防规模存款。构建隧道排水模拟器以确定使用磁体抑制,抑制沉淀和沉积的可行性。仿真展示6.0和4.4g分别在2°和5°倾斜的管道中的沉积碳酸钙的测试结果,而磁处理水分别在分别在2°和5°倾斜的管中沉积10.8和4.3g沉积的碳酸钙。碳酸钙尺度从隧道引流测试进行X射线衍射分析,并显示磁处理水以沉淀更多的树脂。胶铁和金属石的溶解度产品和晶体结构能够帮助解释隧道排出试验结果,并建议如果使用磁体,则探讨水流速是钙化抑制中的潜在重要因素。

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