Search results for: cod fractionations

• The Influence of COD Fraction Forms and Molecules Size on Hydrolysis Process Developed by Comparative OUR Studies in Activated Sludge Modelling

  Publication

  • J. Drewnowski
  • B. Szeląg
  • L. Xie
  • X. Lu
  • M. Ganesapillai
  • C. K. Deb
  • J. Szulżyk-Cieplak
  • G. Łagód

  - MOLECULES - Year 2020

  The activated sludge models (ASMs) commonly used by the International Water Association (IWA) task group are based on chemical oxygen demand (COD) fractionations. However, the proper evaluation of COD fractions, which is crucial for modelling and especially oxygen uptake rate (OUR) predictions, is still under debate. The biodegradation of particulate COD is initiated by the hydrolysis process, which is an integral part of an ASM....

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• Determination of COD Fractionation as a Key Factor for Appropriate Modelling and Monitoring of Activated Sludge Processes

  Publication

  • A. Remiszewska-Skwarek
  • J. Drewnowski
  • S. Fudala-Książek
  • A. Łuczkiewicz

  - Year 2016

  An operation of wastewater treatment plant is usually controlled by global parameters such as flow, solids retention time, sludge age, concentration of ammonia and dissolved oxygen, etc. It is considered that, together with the chemical and biological oxygen demand (COD and BOD), those parameters indirectly exhibit the effectiveness of activated sludge processes. Especially the BOD indicate the amount of organic pollution that...

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