Contaminant removal and microorganism response of activated sludge in sulfamethazine wastewater treatment

被引：20

作者：

Li, Na ^{[1
]}

Liu, Qi ^{[1
]}

Zhou, Guang-Qing ^{[1
,2
]}

Dai, Mei-Xue ^{[1
]}

Kong, Qiang ^{[1
,2
,3
]}

机构：

[1] Shandong Normal Univ, Coll Life Sci, 88 Wenhua Donglu, Jinan 250014, Shandong, Peoples R China

[2] Shandong Normal Univ, Collaborat Innovat Ctr Human Nature & Green Dev U, Coll Geog & Environm, Jinan 250014, Shandong, Peoples R China

[3] Natl Univ Singapore, Dept Civil & Environm Engn, Singapore 117576, Singapore

来源：

INTERNATIONAL BIODETERIORATION & BIODEGRADATION | 2019年 / 143卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Activated sludge; Sulfamethazine; Extracellular polymeric substances; Microorganism response; PERSONAL CARE PRODUCTS; EXTRACELLULAR POLYMERIC SUBSTANCES; BACTERIAL COMMUNITY; MICROBIAL COMMUNITY; NITROGEN REMOVAL; TREATMENT PLANTS; GRANULAR SLUDGE; PHARMACEUTICALS; DEGRADATION; SULFONAMIDES;

D O I：

10.1016/j.ibiod.2019.05.022

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The contaminant removal and microorganism response in activated sludge exposed to sulfamethazine (SMT) for 66 days was investigated. The average removal efficiency of chemical oxygen demand (COD), total nitrogen (TN), ammonia nitrogen (NH4+ -N), total phosphorus (TP) and SMT were 93%, 71%, 98%, 69% and 84%, respectively. The content of extracellular polymeric substance (EPS) increased significantly from day 0 to day 66 (p < 0.05). Microorganisms secreted more PN to protect cells from SMT damage under the stimulation of SMT. Three-dimensional excitation-emission matrix (3D-EEM) results showed that fluorescence intensity of tyrosine like aromatic protein in EPS increased significantly from day 0 to day 66. The total reads of Pseudomonas (denitrifying bacteria, DNB) and Acinetobacter (phosphorus-accumulating bacteria, PAO) increased significantly from day 0 to day 66 (p < 0.05), which indicated that the above-cited bacteria could resist the SMT stress.

引用

页数：9

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