就离子交换膜降低聚驱采油废水矿化度的效能及不同相对分子质量聚合物的影响开展研究,结合聚合物在离子交换膜上的吸附情况、清洗液中聚合物相对分子质量的分布情况分析,考察离子交换膜的污染特性.结果表明,溶液中部分水解型聚丙烯酰胺(HPAM)相对分子质量越大,离子交换膜降低矿化度效果越差,能耗越高;阴膜污染比阳膜更严重;异相膜的污染比均相膜严重;阳离子交换膜更易被小分子量的HPAM污染,阴离子交换膜更易被大相对分子质量的HPAM污染.通过激光共聚焦显微镜(CLSM)、傅里叶红外光谱仪(FTIR)、静电作用以及界面热力学分析发现,HPAM对离子交换膜会产生污染,其作用机制主要是静电作用.
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