Simultaneous nitrification, denitrification and phosphorus removal in an aerobic granular sludge sequencing batch reactor with high dissolved oxygen: Effects of carbon to nitrogen ratios

被引：144

作者：

Wang, Hongyu ^{[1
]}

Song, Qun ^{[1
]}

Wang, Jing ^{[1
]}

Zhang, Heng ^{[1
]}

He, Qiulai ^{[1
]}

Zhang, Wei ^{[1
]}

Song, Jianyang ^{[1
]}

Zhou, Jinping ^{[2
]}

Li, Hui ^{[1
,2
]}

机构：

[1] Wuhan Univ, Sch Civil Engn, Wuhan 430072, Hubei, Peoples R China

[2] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Hubei, Peoples R China

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2018年 / 642卷

基金：

中国国家自然科学基金;

关键词：

Aerobic granular sludge; COD/N; High dissolved oxygen; Extracellular polymeric substances; Illumina pyrosequencing; EXTRACELLULAR POLYMERIC SUBSTANCES; WASTE-WATER; MICROBIAL-POPULATION; ORGANIC-MATTER; EMISSION; IMPACT; EXCITATION; STABILITY; COMMUNITY;

D O I：

10.1016/j.scitotenv.2018.06.081

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Simultaneous nitrification, denitrification and phosphorus removal (SNDPR) using aerobic granules is a promising approach in water treatment. The present work investigated the effects of influent carbon to nitrogen (N) ratios (20, 10, and 4) on the SNDPR performance in aerobic granular sequencing batch reactors (AGSBR) under high aeration rate. Results revealed that granules remained long-term stability when the DO concentration was 7-8 mg/L. With the decline of COD/N ratios, the denitrification efficiency was reduced due to the accumulation of nitrate, although the removal of COD and TP remained stable with good efficiency. Rising concentration of ammonia N led to the increase of PN/PS ratio of EPS as well as the protein types according to the results of 3D-EEM fluorescence spectroscopy. MiSeq pyrosequensing technology indicated that the decreasing ratio of COD/N under high DO concentration contributed to accumulation of GAOs and DNPAOs rather than PAOs. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：1145 / 1152

页数：8

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