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Experimental and mathematical modelling of simultaneous nitrification and denitrification

100%

Hutnan M., Derco J., Kralik M.

Polish Journal of Environmental Studies

1993

tom 02

nr 3

The results of experimental and mathematical modelling of simultaneous carbonization, nitrification and denitriiication processes in an industrial wastewater treatment plant are presented. Simplified dynamic mathematical models based on organic and nitrogen substrates, autotrophic and heterotrophic biomass material balances for complete-mixing and tank-in-series hydraulic regimes and Monod-type kinetics were developed. These models were verified by using experimental data obtained in laboratory tank-in-seres equipment with high internal recirculation flow as well as by application of the real Carriousel plant data. The influence of unsteady-state conditions on selected process kinetic parameters was also studied in this work. The process dynamic behaviour in the lab-scale tank-in-series equipment was modelled by step shock loading of the substrate concentration.

Modelling of a carrousel plant by an intermittently aerated activated sludge process

84%

Derco J., Kralik M., Kovacs A., Beresikova Z., Zarnovsky L.

Polish Journal of Environmental Studies

1994

tom 03

nr 1

An intermittently aerated completely mixing lab-scale bioreactor was applied in the modelling of simultaneous nitrification and denitrification processes carried out in the Carrousel system. Two kinetic models based on the IAWPRC task group kinetic and stoichiometric concept were developed and verified. The model parameters number is reduced and the influence of waste water composition on oxygen transport rate is implicitly incorporated by the evaluation of oxic and anoxic "switching functions" based on oxygen profile data monitored in the bioreactor. The advantages of this approach in comparison to the tank-in-series model are discussed.

Ograniczanie wyników

2 Polish Journal of Environmental Studies

2 Derco J.

2 Kralik M.

1 Beresikova Z.

1 Hutnan M.

1 Kovacs A.

1 Zarnovsky L.

1 1994

1 1993

Wyniki wyszukiwania

Experimental and mathematical modelling of simultaneous nitrification and denitrification

Modelling of a carrousel plant by an intermittently aerated activated sludge process