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Title: | Effect of organic solute adsorption on biological nitrogen removal in biologically active granular activated carbon filtration for drinking water treatment – A modeling study. | Authors: | Vo Xuan Khanh | Keywords: | Organic solute adsorption;Biological nitrogen;Biologically active;Drinking water treatment | Issue Date: | 2022 | Abstract: | Pilot-scale investigations have a hard time quantifying the difference between adsorption and biodegradation of organics, as well as the potential impact of adsorption of easily degradable organics on nitrogen removal. Modeling provides an organized and more precise analysis of potential outcomes in a bGAC setup. The biodegradation of organics, nitrification, and denitrification processes in water treatment can be modeled using activated sludge models (ASM). Simultaneous biodegradation and adsorption in granular activated carbon (GAC) columns is a complicated treatment process, consisting of two potential mechanisms for contaminant removal, two distinct phases GAC and liquid. A detailed mathematical model may contribute to a better understanding of the process, assist in planning pilot studies, and serve as a useful tool in design and operation. In this study, an enhanced Activated Sludge Model No. 1 in which nitrification and denitrification are modelled as two-step processes combining with the adsorption kinetic numerical model that differentiates between the adsorption and biodegradation capability of COD was developed and validated. The modeling software AQUASIM is used to differentiate the adsorption and biodegradation quantities of a biological activated carbon (BAC) fixed bed colum |
URI(1): | https://epub.vgu.edu.vn/handle/dlibvgu/1711 |
Appears in Collections: | Water Technology, Reuse and Management (WTE) |
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