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Optimization and modeling of the nitrification process on Egå wastewater purification plant

 

Description:

During our experience on 3rd semester we experienced how complex wastewater treatment is. In the study of how wastewater is treated we came across basic knowledge about the microorganisms which converts ammonia to nitrate. These microorganisms are crucial for wastewater treatment, but have a very slow growth rate compared to other microorganisms. Therefore they require a long time to insure regrowth before washing out. We made the following project about optimizing and modelling the nitrification process on Egå wastewater purification plant. Egå wastewater purification plant will in the future get an extra load of 50.000PE, greater than the current capacity of 90.000PE, due to the centralization plan year 2012 of Aarhus. The focus on the project has been a BABE (Bio Augmentation Batch Enhanced) reactor, which can be seen on the figure of this page. The BABE process helps to ensure fast growth of nitrifiers in the sludge. The effluent of the BABE process will be led to main process tanks, where the nitrifiers remove ammonia from the wastewater. Therefore the BABE process provides better removal of ammonia in the main process. The purpose of this project was to supply the BABE reactor on Egå’s wastewater purification plant, and estimate if it was a possible solution.

 

 

 

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