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淺談聚丙烯酰胺在水處理中的應用

LAIYUAN:YIXINJINGSHUI RIQI:2019-07-12 LIULAN:

  高分子混凝劑一般都是線型高分子聚合物,它們的分子呈鏈狀,并由很多鏈節組成,每一鏈節為一化學單體,各單體以共價鍵結合。高分子聚合物的單體含有可離解官能基團時,恰鏈狀分子長度有大量可離解基團,常見的有一CooH,~SoaH,一P()a()H2,一NHoH—NH。OH等,可分為聚丙烯酰胺' target='_blank'>陰離子聚丙烯酰胺陽離子聚丙烯酰胺和非離子聚丙烯酰胺。高分子混凝劑的凝聚作用主要通過以下二方面進行:(1)由于氫鍵結合、靜電結合、范德華力等作用對膠粒有較強的吸附結合力。(2)因為高聚合度的線型高分子在溶液中保持適當的伸展形狀,從而發揮吸附架橋作用把許多細小顆粒吸附后,纏結在一起。

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