Hydrolysis is an important process in biological wastewater treatment and has been known as the rate limiting step in organic carbon removal from municipal or industrial wastewater. The biodegradation of XS is initiated by hydrolysis which is an integral part of activated sludge models, such as the Activated Sludge Model no. 2d (ASM2d). The aim of this study was to evaluate different concepts of modeling the hydrolysis process using the original and modified version of ASM2d. Batch test results obtained at a large BNR plant in Gdansk (Poland) provided experimental database for comparison of the two model predictions. In comparison with the orginal ASM2d, the modified model had no or only minor effect on the predicted NUR, PRR and anoxic/aerobic PUR, but better predicted the OUR. The average ARDs were 19.0% and 29.3% (original ASM2d) vs. 13.4% and 20.4% (modified ASM2d), respectively, for the settled wastewater without pretreatment and after coagulation-flocculation.
Authors
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.2166/wst.2013.092
- Category
- Aktywność konferencyjna
- Type
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Language
- angielski
- Publication year
- 2012
