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钱江隧道盾构废弃泥浆的混凝分离

Keywords: 混凝分离,砂土泥浆,粘土泥浆,钱江隧道,盾构

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Abstract:

为了实现钱江隧道盾构废弃泥浆的无害化处理,对盾构废弃的砂土泥浆和粘土泥浆分别进行混凝分离的实验条件研究,结果表明:对于砂土泥浆,密度为1.20g/cm3有利于实现高效的泥水分离;PAM作为絮凝剂的分离效果最好;混凝分离的最优化分离条件为:投药量为150mg/L,pH为8左右,水力条件为以300r/min搅拌1min,再以80r/min搅拌20min。对于粘土泥浆,密度为1.10g/cm3有利于实现高效的泥水分离;PAM作为絮凝剂的分离效果最好;混凝分离的最优化分离条件为:投药量为150mg/L,pH为6左右,水力条件为以300r/min搅拌1min,再以80r/min搅拌20min。该实验为废弃泥浆的进一步处理奠定了基础。

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