Substrate inhibition and concentration control in an UASB-Anammox process

Haiyuan Ma; Qigui Niu; Yanlong Zhang; Shilong He; Yu You Li

doi:10.1016/j.biortech.2017.04.017

Substrate inhibition and concentration control in an UASB-Anammox process

Haiyuan Ma, Qigui Niu, Yanlong Zhang, Shilong He, Yu You Li

ENG - Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

61 Citations (Scopus)

Abstract

An UASB-Anammox reactor was operated for more than one year to study the process performance variations respond to the nitrogen loading rate (NLR) and substrate concentration. The IC₁₀ (451.1 mg/L)_, IC₅₀ (725.3 mg/L) and the prospected threshold of influent total nitrogen (TN) concentration were simulated. A stable TN removal efficiency was obtained when the TN influent was controlled. The disequilibrium distribution of the substrate following the plug flow with the height of the reactor resulted in significant variations in specific Anammox activity from the bottom to the top of the reactor (348 → 3 mgN/gVSS/d). With long term acclimation, the nitrogen removal capacity of Anammox sludge varied significantly, with the most activated sludge obtained in the bottom part a 100 times capacity greater than that of the top. A stable performance with high removal efficiency in the constructed UASB-Anammox reactor was obtained when the influent TN concentration was below 451.1 mg/L.

Original language	English
Pages (from-to)	263-272
Number of pages	10
Journal	Bioresource Technology
Volume	238
DOIs	https://doi.org/10.1016/j.biortech.2017.04.017
Publication status	Published - 2017

Keywords

Inhibition factors
Simulation
Specific Anammox activity
Substrate disequilibrium
UASB-Anammox stability

ASJC Scopus subject areas

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2017.04.017

Cite this

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title = "Substrate inhibition and concentration control in an UASB-Anammox process",

abstract = "An UASB-Anammox reactor was operated for more than one year to study the process performance variations respond to the nitrogen loading rate (NLR) and substrate concentration. The IC10 (451.1 mg/L), IC50 (725.3 mg/L) and the prospected threshold of influent total nitrogen (TN) concentration were simulated. A stable TN removal efficiency was obtained when the TN influent was controlled. The disequilibrium distribution of the substrate following the plug flow with the height of the reactor resulted in significant variations in specific Anammox activity from the bottom to the top of the reactor (348 → 3 mgN/gVSS/d). With long term acclimation, the nitrogen removal capacity of Anammox sludge varied significantly, with the most activated sludge obtained in the bottom part a 100 times capacity greater than that of the top. A stable performance with high removal efficiency in the constructed UASB-Anammox reactor was obtained when the influent TN concentration was below 451.1 mg/L.",

keywords = "Inhibition factors, Simulation, Specific Anammox activity, Substrate disequilibrium, UASB-Anammox stability",

author = "Haiyuan Ma and Qigui Niu and Yanlong Zhang and Shilong He and Li, {Yu You}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

doi = "10.1016/j.biortech.2017.04.017",

language = "English",

volume = "238",

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T1 - Substrate inhibition and concentration control in an UASB-Anammox process

AU - Ma, Haiyuan

AU - Niu, Qigui

AU - Zhang, Yanlong

AU - He, Shilong

AU - Li, Yu You

PY - 2017

Y1 - 2017

N2 - An UASB-Anammox reactor was operated for more than one year to study the process performance variations respond to the nitrogen loading rate (NLR) and substrate concentration. The IC10 (451.1 mg/L), IC50 (725.3 mg/L) and the prospected threshold of influent total nitrogen (TN) concentration were simulated. A stable TN removal efficiency was obtained when the TN influent was controlled. The disequilibrium distribution of the substrate following the plug flow with the height of the reactor resulted in significant variations in specific Anammox activity from the bottom to the top of the reactor (348 → 3 mgN/gVSS/d). With long term acclimation, the nitrogen removal capacity of Anammox sludge varied significantly, with the most activated sludge obtained in the bottom part a 100 times capacity greater than that of the top. A stable performance with high removal efficiency in the constructed UASB-Anammox reactor was obtained when the influent TN concentration was below 451.1 mg/L.

AB - An UASB-Anammox reactor was operated for more than one year to study the process performance variations respond to the nitrogen loading rate (NLR) and substrate concentration. The IC10 (451.1 mg/L), IC50 (725.3 mg/L) and the prospected threshold of influent total nitrogen (TN) concentration were simulated. A stable TN removal efficiency was obtained when the TN influent was controlled. The disequilibrium distribution of the substrate following the plug flow with the height of the reactor resulted in significant variations in specific Anammox activity from the bottom to the top of the reactor (348 → 3 mgN/gVSS/d). With long term acclimation, the nitrogen removal capacity of Anammox sludge varied significantly, with the most activated sludge obtained in the bottom part a 100 times capacity greater than that of the top. A stable performance with high removal efficiency in the constructed UASB-Anammox reactor was obtained when the influent TN concentration was below 451.1 mg/L.

KW - Inhibition factors

KW - Simulation

KW - Specific Anammox activity

KW - Substrate disequilibrium

KW - UASB-Anammox stability

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M3 - Article

C2 - 28437644

AN - SCOPUS:85017697842

SN - 0960-8524

VL - 238

SP - 263

EP - 272

JO - Agricultural Wastes

JF - Agricultural Wastes

ER -

Substrate inhibition and concentration control in an UASB-Anammox process

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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