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聚丙烯酰胺(PAM)选型指南:阴离子、阳离子和非离子PAM详解

三种主要PAM类型

特性 阴离子PAM(APAM) 阳离子PAM(CPAM) 非离子PAM(NPAM)
离子电荷 负(-) 正(+) 中性(0)
分子量范围 300-2500万 300-1500万 300-1200万
最佳pH范围 6.0-10.0 4.0-8.0 3.0-10.0
主要机理 桥接+电荷中和 电荷中和+桥接 桥接为主

阴离子PAM(APAM)

适用于无机颗粒悬浮液——粘土、矿泥、选矿尾矿、洗煤废水。在高pH系统(pH 7-10)中表现优异。经常作为PAC/PFS的助凝剂使用。

阳离子PAM(CPAM)

适用于市政污泥脱水(带式压滤机、离心机、螺旋压滤机)、食品加工废水(肉类、乳制品、酿造)、造纸助留助滤、印染废水脱色和污泥脱水。在低pH系统(pH 4-7)中保持有效性。

非离子PAM(NPAM)

适用于强酸性系统(pH 2-5)、高盐度水(海水、盐水、油气采出水)、酸性矿山排水处理。

选型决策表

应用 颗粒类型 推荐PAM
洗煤 无机(粘土、煤) APAM,1200-1800万分子量
市政污泥脱水 有机(生物固体) CPAM,阳离子度30-50%
选矿尾矿 无机(矿物) APAM,1800-2200万分子量
乳制品废水气浮 有机(脂肪、蛋白质) CPAM,阳离子度50-70%
酸性矿山排水 无机 NPAM,800-1200万分子量

HydroChemix提供所有三种PAM类型的免费样品,涵盖多种分子量和阳离子度规格,供现场测试使用。

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