Substrate inhibition and multiple states in a continuous nitrification process

M. Sheintuch; B. Tartakovsky; N. Narkis; M. Rebhun

doi:10.1016/0043-1354(94)00216-T

Substrate inhibition and multiple states in a continuous nitrification process

M. Sheintuch^*, B. Tartakovsky, N. Narkis, M. Rebhun

^*Corresponding author for this work

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

47 Scopus citations

Abstract

Multiple steady states were observed in a continuous nitrification process in a laboratory activated sludge reactor operating at 18°C and subject to high ammonium concentration in feed (up to 300 mg/l as N): under the same operating conditions a state of either complete oxidation to nitrate or of partial oxidation to nitrite may be attained, depending on the initial conditions. A model incorporating Monod and Andrews kinetics for growth of the two species was developed and employed for parameter estimation. A steady-state solution, expressed in terms of the measured variables-total biomass concentration in the reactor and in the effluent-was derived and its parameters were estimated. The model was then analyzed to show domains of steady state multiplicity under two control strategies in which either the sludge age or the total biomass concentration is kept constant.

Original language	English
Pages (from-to)	953-963
Number of pages	11
Journal	Water Research
Volume	29
Issue number	3
DOIs	https://doi.org/10.1016/0043-1354(94)00216-T
State	Published - Mar 1995
Externally published	Yes

Keywords

activated-sludge
nitrification
steady-state multiplicity

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10.1016/0043-1354(94)00216-T

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title = "Substrate inhibition and multiple states in a continuous nitrification process",

abstract = "Multiple steady states were observed in a continuous nitrification process in a laboratory activated sludge reactor operating at 18°C and subject to high ammonium concentration in feed (up to 300 mg/l as N): under the same operating conditions a state of either complete oxidation to nitrate or of partial oxidation to nitrite may be attained, depending on the initial conditions. A model incorporating Monod and Andrews kinetics for growth of the two species was developed and employed for parameter estimation. A steady-state solution, expressed in terms of the measured variables-total biomass concentration in the reactor and in the effluent-was derived and its parameters were estimated. The model was then analyzed to show domains of steady state multiplicity under two control strategies in which either the sludge age or the total biomass concentration is kept constant.",

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author = "M. Sheintuch and B. Tartakovsky and N. Narkis and M. Rebhun",

year = "1995",

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journal = "Water Research",

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TY - JOUR

T1 - Substrate inhibition and multiple states in a continuous nitrification process

AU - Sheintuch, M.

AU - Tartakovsky, B.

AU - Narkis, N.

AU - Rebhun, M.

PY - 1995/3

Y1 - 1995/3

N2 - Multiple steady states were observed in a continuous nitrification process in a laboratory activated sludge reactor operating at 18°C and subject to high ammonium concentration in feed (up to 300 mg/l as N): under the same operating conditions a state of either complete oxidation to nitrate or of partial oxidation to nitrite may be attained, depending on the initial conditions. A model incorporating Monod and Andrews kinetics for growth of the two species was developed and employed for parameter estimation. A steady-state solution, expressed in terms of the measured variables-total biomass concentration in the reactor and in the effluent-was derived and its parameters were estimated. The model was then analyzed to show domains of steady state multiplicity under two control strategies in which either the sludge age or the total biomass concentration is kept constant.

AB - Multiple steady states were observed in a continuous nitrification process in a laboratory activated sludge reactor operating at 18°C and subject to high ammonium concentration in feed (up to 300 mg/l as N): under the same operating conditions a state of either complete oxidation to nitrate or of partial oxidation to nitrite may be attained, depending on the initial conditions. A model incorporating Monod and Andrews kinetics for growth of the two species was developed and employed for parameter estimation. A steady-state solution, expressed in terms of the measured variables-total biomass concentration in the reactor and in the effluent-was derived and its parameters were estimated. The model was then analyzed to show domains of steady state multiplicity under two control strategies in which either the sludge age or the total biomass concentration is kept constant.

KW - activated-sludge

KW - nitrification

KW - steady-state multiplicity

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U2 - 10.1016/0043-1354(94)00216-T

DO - 10.1016/0043-1354(94)00216-T

M3 - 文章

AN - SCOPUS:0028983995

SN - 0043-1354

VL - 29

SP - 953

EP - 963

JO - Water Research

JF - Water Research

IS - 3

ER -

Substrate inhibition and multiple states in a continuous nitrification process

Abstract

Keywords

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