摘要
聚丙烯酰胺（PAM）作为絮凝剂在水处理方面具有广泛应用。通过用PAM培养液对沉积物进行培养,研究聚丙烯酰胺在沉积物中残留对沉积物理化性质和微生物氮转化作用的影响。结果表明,沉积物中PAM残留量与全氮、氨氮、电导率呈显著性正相关（p〈0.05）,分别使全氮、氨氮和电导率提高了1.93%-22.98%,12%-35.29%,33.13%-224.29%,PAM对硝氮、亚硝氮和有机质提升差异不显著,p H呈上升趋势;对微生物氮转化结果表明,PAM可以促进反硝化作用进行,与对CK相比提高了19.83%-143.92%,且反硝化速率与PAM残留量呈显著性正相关（p〈0.05）,对硝化速率提升不明显。
Polyacrylamide（PAM） is widely used as a flocculant in water treatment. Sediments were cultivated by PAM culture solution to study the effect of PAM residuals in sediments on the physical and chemical properties and microbial nitrogen transformation of sediments. The results showed that there was a significant positive correlation between PAM residues in sediments and total nitrogen,ammonia nitrogen,conductivity（p〈0.05）,with an increase of 1.93% -22.98%,12%-35.29%,33.13% -224.29%,respectively. The increase of nitrate nitrogen,nitrite nitrogen and organic matter by PAM was not significant,whereas p H was on the rise. Microbial nitrogen transformation results showed that PAM promoted denitrification,which increased by 19.83% -143.92% compared to CK. The denitrification rate and PAM residues was significantly positively correlated（p〈0.05）,while the promotion of nitrification by PAM was non-significant.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2016年第7期28-33,共6页
Environmental Science & Technology
基金
国家重大科技专项:重污染河道旁路净化与河口湿地生态重建技术及示范工程(2012ZX07103-002)
关键词
聚丙烯酰胺
沉积物理化性质
反硝化作用
硝化作用
polyacrylamide
sediment physicochemical properties
denitrification
nitrification
