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美国内政部矿山局进行了许多采用氧化乙烯聚合物(PEO)和一些以丙烯酰胺为基础的聚合物为絮凝剂的实用絮凝研究。本文讨论了在多种废弃矿泥中采用这些絮凝剂的优缺点。结果 PEO 在处理含粘土或粘土类矿物高的物料时特别有效;而无粘土类矿物存在时,聚丙烯酰胺类絮凝剂则优于 PEO。对于既能破 PEO 也能被聚丙烯酰胺类絮凝剂絮凝的废弃矿泥,通常 PEO 的用量较低,并产出较稳定的脱水产品。提出一种机理来解释两种絮凝剂行为的差异。
The US Department of Interior Mines conducted many practical flocculation studies using ethylene oxide polymers (PEO) and some acrylamide-based polymers as flocculants. This article discusses the advantages and disadvantages of using these flocculants in a variety of abandoned sludge. Results PEO is particularly effective when dealing with high clay- or clay-containing materials; polyacrylamide flocculants are superior to PEO in the absence of clay minerals. For waste sludge that can both break PEO and flocculate polyacrylamide flocculants, PEO is usually used in a lower amount and yields a more stable dehydrated product. A mechanism is proposed to explain the difference in behavior between the two flocculants.