改性聚丙烯酰胺絮凝细小偏钛酸的试验研究  

Experimental study on flocculating fine metatitanic acid by modified polyacrylamide

作　　者：苑春[1] 彭兵[1] 柴立元[1] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《工业水处理》2005年第2期40-42,共3页Industrial Water Treatment

摘　　要：通过均匀设计法有效减少试验次数,确定制取改性聚丙烯酰胺的最佳合成工艺条件,并首次将改性聚丙烯酰胺作为絮凝剂,用于去除硫酸法钛白生产中酸性洗水所含的偏钛酸。试验结果表明,在pH为2.0～3.5、投加质量浓度为20mg/L、偏钛酸质量浓度7.5g/L、时间15min、温度35℃的条件下进行絮凝,偏钛酸回收率>92%。The uniform design is an effective method to reduce the times of experi ments. The optimal synthesis conditions to prepare modified polyacrylamide are o btained. Firstly metatitanic acid in acidic wastewater of titanium dioxide manuf acture is removed effectively by using modified polyacrylamide as flocculant. Th e results show that metatitanic acid in the acidic wastewater produced during t itanium dioxide manufacture could be removed over 92% under the conditions of pH 2.0-3.5, the dosage of flocculants 20 mg/L, concentration of metatitanic aci d 7.5 g/L ,while time and temperature of reaction are 15 min and 35 ℃, respecti vely.

关 键 词：改性聚丙烯酰胺 絮凝 偏钛酸 

分 类 号：X703.1[环境科学与工程—环境工程] TQ314.253[化学工程—高聚物工业]