AHLs投加方式对好氧颗粒污泥稳定性的影响  

Effect of AHLs injection method on stability of aerobic granular sludge

作　　者：宋志伟 郑欢 谷新宇 Song Zhiwei;Zheng Huan;Gu Xinyu(Academic Affairs Office, Heilongjiang University of Science & Technology, Harbin 150022, China;School of Environmental & Chemical Engineering, Heilongjiang University of Science & Technology, Harbin 150022, China)

机构地区：[1]黑龙江科技大学教务处,哈尔滨150022 [2]黑龙江科技大学环境与化工学院,哈尔滨150022

出　　处：《黑龙江科技大学学报》2022年第2期189-197,共9页Journal of Heilongjiang University of Science And Technology

基　　金：国家自然科学基金项目(51678222)。

摘　　要：为探究N-乙酰基高丝氨酸内酯类化合物投加方式对好氧颗粒污泥稳定性的影响,利用SBAR反应器培养4组好氧颗粒污泥,在不同时期先后投加C12-HSL、C14-HSL两种化合物,监测运行过程中污泥的颗粒粒径、质量浓度、EPS质量分数等参数的变化。结果表明:采用混合投加方式可以使好氧颗粒污泥更稳定,但颗粒粒径明显减小,平均粒径约为0.1 mm;两种化合物共同调控的好氧颗粒污泥更利于维持EPS中酪氨酸类蛋白质、色氨酸类蛋白质、蛋白质二级结构β-折叠的相对质量分数。This paper aims to investigate the effect of mixed injection method of N-Acetyl homoserine lactones on the stability of aerobic granular sludge.The study involves using the SBAR reactor to cultivate 4 sets of aerobic granular sludge,in which C12-HSL and C14-HSL are injected in order at different time,detecting the different parameters of the sludge particle size,sludge concentration,and EPS fraction in the experiment.The results show that mixed injection makes aerobic granular sludge more stable,but the particle size reduces significantly with the average particle size at about 0.1 mm.The aerobic granular sludge co-regulated by two N-Acetyl homoserine lactones can be more conductive to maintain the relative content of tyrosine-like proteins,tryptophan-like proteins,and protein secondary structureβ-folding in EPS.

关 键 词：好氧颗粒污泥 AHLs 胞外聚合物 蛋白质 多糖 

分 类 号：X703[环境科学与工程—环境工程]