Species and distribution of inorganic and organic phosphorus in enhanced phosphorus removal aerobic granular sludge

被引：90

作者：

Huang, Wenli ^{[1
]}

Huang, Weiwei ^{[1
]}

Li, Huifang ^{[1
]}

Lei, Zhongfang ^{[1
]}

Zhang, Zhenya ^{[1
]}

Tay, Joo Hwa ^{[2
]}

Lee, Duu-Jong ^{[3
]}

机构：

[1] Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan

[2] Univ Calgary, Schulich Sch Engn, Dept Civil Engn, Calgary, AB, Canada

[3] Natl Taiwan Univ, Dept Chem Engn, Taipei 106, Taiwan

来源：

BIORESOURCE TECHNOLOGY | 2015年 / 193卷

基金：

日本学术振兴会;

关键词：

Aerobic granules; Enhanced biological phosphorus removal; P species; Phosphorus-31 nuclear magnetic resonance (P-31 NMR); EXTRACELLULAR POLYMERIC SUBSTANCES;

D O I：

10.1016/j.biortech.2015.06.120

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The species and distribution of phosphorus (P) in an enhanced biological phosphorus removal (EBPR)-aerobic granular sludge (AGS) were fractionated and further analyzed. Results showed that microbial cells, extracellular polymeric substances (EPS) and mineral precipitates contributed about 73.7%, 17.6% and 5.3-6.4% to the total P (TP) of EBPR-AGS, respectively. Inorganic P (IP) species were orthophosphate, pyrophosphate and polyphosphate among which polyphosphate was the major P species in the AGS, cells and EPS. Monoester and diester phosphates were identified as the organic P (OP) species in the AGS and cells. Hydroxyapatite (Ca-5(PO4)(3)OH) and calcium phosphate (Ca-2(PO4)(3)) were the dominant P minerals accumulated in the core of the granules. Cells along with polyphosphate were mainly in the outer layer of AGS while EPS were distributed in the whole granules. Based on the above results, the distribution of IP and OP species in AGS has been conceived. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：549 / 552

页数：4

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