Characterisation of the Nitrification Process for Design Purposes

Sinkjær, Ole; Yndgaard, L.; Harremoës, Poul; Hansen, Joachim

doi:10.2166/wst.1994.0155

Cited by 7 publications

(3 citation statements)

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“…The autotrophic biomass fraction (f BA ) in the activated sludge of the full-scale installation can be approximated by (18) (Sinkjaer et al 1994):…”

Section: Kinetic Characterisationmentioning

confidence: 99%

Evaluation of an ASM1 model calibration procedure on a municipal–industrial wastewater treatment plant

Petersen

Gernaey

Henze

et al. 2002

Journal of Hydroinformatics

139

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The purpose of the calibrated model determines how to approach a model calibration, e.g. which information is needed and to which level of detail the model should be calibrated. A systematic model calibration procedure was therefore defined and evaluated for a municipal–industrial wastewater treatment plant. In the case that was studied it was important to have a detailed description of the process dynamics, since the model was to be used as the basis for optimisation scenarios in a later phase. Therefore, a complete model calibration procedure was applied including: (1) a description of the hydraulics in the system via a tracer test, (2) an intensive measuring campaign and (3) supporting lab-scale experiments to obtain and confirm kinetic parameters for the model. In this paper the model calibration procedure for this case study is described step by step, and the importance of the different steps is discussed. The calibrated model was evaluated via a sensitivity analysis on the influence of model parameters and influent component concentrations on the model output. The sensitivity analysis confirmed that the model output was sensitive to the parameters that were modified from the default parameter values. The calibrated model was finally reduced from a 24 tanks-in-series configuration to a 12 tanks-in-series configuration, resulting in a 50% reduction of the simulation time.

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“…The autotrophic biomass fraction (f BA ) in the activated sludge of the full-scale installation can be approximated by (18) (Sinkjaer et al 1994):…”

Section: Kinetic Characterisationmentioning

confidence: 99%

Evaluation of an ASM1 model calibration procedure on a municipal–industrial wastewater treatment plant

Petersen

Gernaey

Henze

et al. 2002

Journal of Hydroinformatics

139

View full text Add to dashboard Cite

show abstract

“…In this step the fraction of nitrifiers and heterotrophs on the total biomass concentration (expressed as COD) is to be established as well. The calibrated values can be compared to values obtained from direct equations such as, for nitrifiers (Sinkjaer et al, 1994)…”

Section: Kinetic Characterizationmentioning

confidence: 99%

A Comprehensive Model Calibration Procedure for Asm1

Petersen¹,

Gernaey²,

Henze³

et al. 2001

proc water environ fed

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A systematic model calibration procedure for the Activated Sludge Model No. 1 (ASM1) was presented and evaluated on a combined municipal-industrial WWTP. A careful definition of the purpose of the model determines how to approach the model calibration. It was illustrated how additional information obtained from tests specifically designed to describe the hydraulics and the biology of the system help to decide on realistic values for the model parameters. The aim of the illustrative case study was to obtain a good description of the N removal capacity, since the model was to be applied for process optimisation in a later stage. Two of the most important parameters to calibrate were the maximum specific growth rates of heterotrophs and nitrifiers. It was found that additional information on the specific growth rates derived from respirometric lab-experiments can be very important to confirm that the calibrated parameters of the full-scale model are realistic.

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“…The effect of temperature in the range of 10-20 8C was not observed when the sludge age was 15 days. Sinkjǽ r et al [4] stated that the temperature increase of 1 8C resulted in about 10% reduction of sludge age required for nitrification. The limitation of organic compounds loads in influent to aeration zone of the reactor is advisable because their oxidation is competitive to nitrification.…”

Section: Introductionmentioning

confidence: 99%