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
Additional information
- Category
- Aktywność konferencyjna
- Type
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Language
- angielski
- Publication year
- 2016
