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Determination of COD Fractionation as a Key Factor for Appropriate Modelling and Monitoring of Activated Sludge Processes
Abstract
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 can be biologically degraded, but in fact it is inadequate to describe the biodegradation kinetics of all organic substrates present in wastewater. Thus, the Activated Sludge Models (Henze et al., 1987 and 1995) commonly used by IWA Task Group, they all based on the COD fractionations, determined on the basis of different methods. The aim of this study was to evaluate the modeling of the biological treatment processes at wastewater treatment plants (WWTPs) using the oxygen uptake rate (OUR)-based respirometric test method together with the flocculation/filtration COD method. The first method measures the biomass activity in situ, expressed by changes in the dissolved oxygen (DO), while in the second method the distinction of COD into readily, slowly and not biodegradable fractions is achieved indirectly and involves flocculation/precipitation/filtration processes. Those parameters were determined for WWTP Gdynia-Debogorze (northern Poland) and implemented into.
Authors (4)
-
Anna Remiszewska-Skwarek
- PEWIK Gdynia Sp. z o.o.
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Details
- Category:
- Conference activity
- Type:
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Title of issue:
- 8th Eastern European Young Water Professionals conference : Leaving the Ivory Tower Bridging the Gap between Academia, Industry, Services and Public Sector: Book of Abstracts strony 247 - 248
- Language:
- English
- Publication year:
- 2016
- Bibliographic description:
- Remiszewska-Skwarek A., Drewnowski J., Fudala-Książek S., Łuczkiewicz A.: Determination of COD Fractionation as a Key Factor for Appropriate Modelling and Monitoring of Activated Sludge Processes// 8th Eastern European Young Water Professionals conference : Leaving the Ivory Tower Bridging the Gap between Academia, Industry, Services and Public Sector: Book of Abstracts/ ed. M. Feierabend, J. Drewnowski. P. Wójtowicz Wrocław: Oficyna Wydawnicza Politechniki Wrocławskiej, 2016, s.247-248
- Verified by:
- Gdańsk University of Technology
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