高分子絮凝剂对氨碱废渣浆液的处理研究

Processing of polymer flocculant on ammonia alkali residue

用阴离子改性聚丙烯酰胺作絮凝剂,使浆液中碱渣沉降。实验表明,当聚丙烯酰胺用量为5.0 g,甲醛溶液5.7 g,亚硫酸氢钠7.28 g,反应温度60℃,pH=9,反应时间为2～3 h时,可将磺酸基团引入到了聚丙烯酰胺侧链上。对于碱渣浆液絮凝沉降的最适宜配方为:碱渣300 g;卤水以30 g粗盐/100 mL蒸馏水的浓度标准配制,共400 mL;水玻璃0.30 g或3.00 g;改性聚丙烯酰胺1.50 g。

Using anionic modified polyacrylamide as flocculating agents,to settle slurry alkali residue. Ex- periments showed that when PAM 5.0 g, 5.7 g formaldehyde solution, sodium bisulfite is 7.28 g, the re- action temperature 60 ℃, pH = 9, reaction time 2 - 3 h, the sulfonic acid group on the polypropylene acyl amine side chain. For alkaline slag slurry flocculation and setthng the better formulations were：alkaline slag 300 g,30 g coarse sah from brine concentration standards in the preparation of 100 mL distilled wa- ter,a total of 400 mL,water glass 0.30 g or 3.00 g;modified polyacrylamide 1.50 g.