【摘 要】
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The NEN7371 tests were applied to study the dissolution charactefistics of Cr, Pb, Cd, Zn, As, Cu elements in fly ash, and discuss the effect of heavy metal
【机 构】
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Material and Engineering Structure Dept., Changjiang River Scientific Research Institute, Wuhan 4300
【出 处】
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The 14th International Congress on the Chemistry of Cement (
论文部分内容阅读
The NEN7371 tests were applied to study the dissolution charactefistics of Cr, Pb, Cd, Zn, As, Cu elements in fly ash, and discuss the effect of heavy metals on the environment.The experimental results showed that heavy metal components could be slowly leached form fly ash in the water environment, and the leaching amount was related to the type of heavy metals.With the different heavy metal, its effective content was in the range 12%~62%.Pb, Zn, As ions were more easily leaching in an acidic environment.According to the GB3838 "surface water environmental quality assessment standard", the fly ash dumps region for a long time has a greater risk of heavy metal pollution in an acidic environment.
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