Start-up performance and process kinetics of a UASB-Anammox reactor at low substrate concentration

被引：28

作者：

Li, Yun ^{[1
,2
]}

Cui, Nan ^{[2
]}

Xuan, Keng ^{[2
]}

Xu, Dan ^{[2
]}

Wang, Dongliang ^{[1
,2
]}

Li, Chaoming ^{[2
]}

Li, Zebing ^{[2
]}

Wang, Yufan ^{[2
]}

机构：

[1] East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China

[2] East China Univ Technol, Sch Water Resources & Environm Engn, Nanchang 330013, Jiangxi, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2021年 / 9卷 / 06期

关键词：

Anaerobic ammonia oxidation (Anammox); Kinetics model; Nitrogen removal; Reactor start-up; Low substrate concentration; EXTRACELLULAR POLYMERIC SUBSTANCES; GRANULAR SLUDGE; NITROGEN REMOVAL; ANAEROBIC SLUDGE; INHIBITION; ENRICHMENT; BACTERIA; DENITRIFICATION; QUANTIFICATION; OXIDATION;

D O I：

10.1016/j.jece.2021.106726

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study, the start-up performance and process kinetics of a UASB-Anammox reactor with nitritation sludge at low substrate concentration were evaluated. The results demonstrated that the UASB-Anammox reactor was successfully started by inoculating with a mixture of nitritation sludge and anaerobic ammonium oxidation granular sludge. After 120 days of operation, good nitrogen removal was obtained by anaerobic ammonia oxidation(Anammox). During start-up and operation of the system, TN load removal exhibited an "S-shape" curve. An analysis using microbial growth kinetics models showed that the Logistic Model, the Modified Logistic Model, the Modified Gompertz Model and the Modified Boltzmann Model could all describe the experimental data of TN removal. The process kinetics analysis also showed that nitrogen removal by the UASB-Anammox reactor operating under steady-state conditions can be simulated using the Grau Second-Order Model and the Modified Stover-Kincannon Model. Parameters obtained from the model analysis facilitate the prediction of nitrogen removal performance, operation management and control of similar reactors.

引用

页数：8

共 49 条

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