Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4764680 | Computers & Chemical Engineering | 2017 | 35 Pages |
Abstract
Based on the essential role of nitrifiers in nitrification process, bio-augmentation of nitrifiers in activated sludge process via two configurations is proposed to improve nutrient removal under overloaded conditions. In the first configuration a bio-augmentation batch enhanced reactor was applied to activated sludge. To improve nitrogen removal in overloaded plant, side-stream bio-augmented sequential batch reactor was examined as the second configuration. The simulation of overloaded plant without additional aeration tanks as base-case was performed by ASM1 model. The operation of bio-augmentation configurations and overloaded plant with additional aeration tanks were also simulated. The results reveal that nitrification efficiency can be improved up to 88% under 30% overloading condition compared to the base-case by applying the second configuration to the overloaded plant. Second configuration shows a significant potential for nitrification improvement as a result of N-load reduction compared to the main process as well as augmentation of the endogenous nitrifiers.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Hadieh Roohian, Nasir Mehranbod,