活性污泥中添加生物絮凝剂对X80钢腐蚀行为的影响  

Effect of Biological Flocculant Added into Activated Sludge on Corrosion Behavior of X80 Steel

作　　者：韩苗苗[1] 孔令炜[2] 

机构地区：[1]吉林建筑大学城建学院,吉林长春130111 [2]吉林建筑大学材料科学与工程学院,吉林长春130118

出　　处：《铸造技术》2015年第12期2832-2835,共4页Foundry Technology

摘　　要：通过在活性污泥中添加3种不同类型的生物絮凝剂的方法,研究了X80管线钢在不同腐蚀环境中的腐蚀行为。结果表明,在不同外界温度下,在活性污泥中添加阳离子或者阴离子生物絮凝剂都可以一定程度上降低X80管线钢的腐蚀速率,且阴离子型聚丙烯酰胺添加剂的效果更好。3种腐蚀介质中腐蚀电位从大至小的顺序依次为:活性污泥+阴离子型聚丙烯酰胺>活性污泥+阳离子聚丙烯酰胺>活性污泥。生物絮凝剂的添加可以通过吸附和成膜效应达到对X80管线钢保护的作用,从而降低腐蚀速率。The three kinds of biological flocculants were added into activated sludge, and the corrosion behavior of X80 pipeline steel in different corrosion environments was investigated. The results show that it could decrease the corrosion rate of X80 pipeline steel under different external temperature to add cationic or anionic biological flocculants into the activated sludge, and the result of adding anionic polyacrylamide is best. The corrosion potential in the three corrosive medium is ordered as follows, activated sludge ＋ anionic polyacryl〉amide activated sludge ＋ cationic polyacrylamide 〉activated sludge. The addition of the biological flocculants can protect the X80 pipeline steel due to the effects of adsorption and forming membrane, leading to the reduction of the corrosion rate.

关 键 词：生物絮凝剂 X80管线钢 质量损失法 极化曲线 腐蚀 

分 类 号：TG142.1[一般工业技术—材料科学与工程]