Effects of long-term perfluorooctane sulfonate (PFOS) exposure on activated sludge performance, composition, and its microbial community

被引：21
|
作者：
Lu, Bianhe [1 ,2 ]
Qian, Jin [1 ,2 ]
He, Fei [3 ]
Wang, Peifang [1 ,2 ]
He, Yuxuan [1 ,2 ]
Tang, Sijing [1 ,2 ]
Tian, Xin [1 ,2 ]
机构：
[1] Hohai Univ, Key Lab Integrated Regulat & Resource Dev Shallow, Minist Educ, Nanjing 210098, Peoples R China
[2] Hohai Univ, Coll Environm, Nanjing 210098, Peoples R China
[3] Nanjing Inst Environm Sci, Minist Ecol & Environm Peoples Republ China, 8 Jiangwangmiao St, Nanjing 210042, Peoples R China
来源：
ENVIRONMENTAL POLLUTION | 2022年 / 295卷
基金：
中国国家自然科学基金;
关键词：
Perfluorooctane sulfonate; Activated sludge; Microbial community; Spectroscopy; Nitrogen and phosphorus removal; EXTRACELLULAR POLYMERIC SUBSTANCES; DISSOLVED ORGANIC-MATTER; BIOLOGICAL PHOSPHORUS REMOVAL; JUNCTIONAL INTERCELLULAR COMMUNICATION; SEQUENCING BATCH REACTOR; WASTE-WATER; PERFLUOROALKYL SUBSTANCES; BACTERIAL COMMUNITY; SP-NOV; NANOPARTICLES;
D O I：
10.1016/j.envpol.2021.118684
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The widespread presence and persistence of perfluorooctane sulfonate (PFOS) in wastewater treatment plants, as well as its toxicity and bioaccumulation potential, necessitates the investigation on their impact on bioreactor performance. A 48-day exposure test was adopted to study the effects of low (10 mu g L-1) and high (1000 mu g L-1) PFOS concentrations in a sequencing batch reactor on the performance, composition, and microbial community of activated sludge. The results suggested that adding PFOS at low and high concentrations lowered the removal efficiency of total nitrogen by 22.48% (p < 0.01) and 16.30% (p < 0.01) respectively, while enhanced that of total phosphorus by 1.87% (p > 0.05) and 7.07% (p < 0.05) respectively, compared with the control group. The addition of PFOS also led to the deterioration of activated sludge dewatering performance. Composition and spectroscopic measurements revealed that the PFOS dosage changed the composition of the activated sludge. Furthermore, the PFOS altered the structure and function of the activated sludge microbial community as well as key enzyme activities.
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页数：12
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