Effect of extracellular polymers and signal molecules on the activity of ANAMMOX sludge - 文章详情页

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EI PKU CSCD

摘要：

In　order　to　investigate　the　effect　of　extracellular　polymers　(EPS)　on　the　activity　of　anaerobic　ammonium　oxidation　(ANAMMOX)　granular　sludge,　a　certain　concentration　(30mg/L)　of　integral　extracellular　polymers　(IN-EPS),　loosely　bound　extracellular　polymers　(LB-EPS)　and　tightly　bound　extracellular　polymers　(TB-EPS)　were　added　to　ANAMMOX　granular　sludge,　respectively.　The　results　indicated　that　all　of　the　aforementioned　EPS　could　improve　the　activity　of　ANAMMOX　granular　sludge.　With　regard　to　the　test　group　including　IN-EPS,　LB-EPS　or　TB-EPS,　the　ammonia　nitrogen　removal　rate　of　ANAMMOX　granular　sludge　had　an　increase　of　6.68%,　10.5%　and　19.29%　respectively,　while　the　growth　rate　of　ANAMMOX　bacteria　increased　by　18.25%,　21%　and　16.3%　respectively.　The　compositions　of　three　EPSs　were　basically　identical,　which　is　mainly　consisted　of　aromatic　proteins　and　soluble　microbial　products　through　three-dimensional　fluorescence　spectroscopy.　And　three　kinds　of　acylated　homoserine　lactones　(AHLs)　signal　molecules　in　EPSs:　C4-HSL,　C6-HSL　and　C10-HSL　were　found.　Additionally,　we　discovered　that　C4-HSL　and　C6-HSL　could　improve　the　activity　and　growth　rate　of　ANAMMOX　particles　through　adding　the　above　EPSs　to　ANAMMOX　granular　sludge.　This　interpreted　why　EPS　could　improve　the　activity　of　ANAMMOX　granular　sludge.　©　2019,　Editorial　Board　of　China　Environmental　Science.　All　right　reserved.

关键词：

Ammonia Molecules Fluorescence spectroscopy Polymers Acylation Wastewater treatment Nitrogen removal Granular materials Esters

作者机构：

[ 1 ] [Zhang, Ya-Chao]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Zhang, Jing]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Hou, Ai-Yue]CAUPD Beijing Planning & Design Consultants Co., Beijing; 100825, China
[ 4 ] [Zhou, Rong-Xuan]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China
[ 5 ] [Liang, Dong-Bo]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China
[ 6 ] [Zhang, Kai]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China
[ 7 ] [Liu, Yang]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China
[ 8 ] [Li, Jun]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China

通讯作者信息：

李军
[li, jun]college of architecture and civil engineering, beijing university of technology, beijing; 100124, china

电子邮件地址：

jglijun@bjut.edu.cn

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