The Integrated Fixed Film Activated Sludge (IFAS) is a hybrid activated sludge-biofilm process, which has been used to sustain year round nitrification and nitrogen removal in the systems. Biomass is retained on the fixed-film media and remains in the aerobic reactor, thus increasing the effective mean cell resident time (MCRT) of the biomass and providing the temperature sensitive, slow growing nitrifiers a means of staying in the system when they otherwise would washout.

Our research group is interested to gain more understanding about the IFAS system, how to design and operate the system so that the maximum carbon and nitrogen removal efficiencies can be achieved. In addition, we also are interested in methodologies to keep the IFAS system stabilized and can reach the steady state conditions as quick as possible. The following projects were completed and are under ongoing :

1. Effects of Seasonal Changes in Organic and Nitrogen Loadings and Hydraulic Retention Time on IFAS Wastewater Treatment Process. National Research Council of Thailand-NRCT, 2016
2. Enhancement of Acrylamide Removal Efficiencies with Enterobactor aerogenes by Integrated Fixed Film Activated Sludge (IFAS) Wastewater Treatment Technology. National Research Council of Thailand - NRCT, 2015
3. Effects of Cationic Metals on Biofilm Formation in IFAS Wastewater Treatment Process. Faculty of Engineering, Burapha University, 2009.
4. Effects of pH on Biofilm Formation in IFAS Wastewater Treatment Process. Faculty of Engineering, Burapha University, 2009.
5. Effects of COD/Nitrogen Ratio on Benefits of Anoxic Media for Biological Nitrogen Removal in IFAS Wastewater Treatment Processes. The Thailand Research Fund-TRF, 2007.
6. Optimal operating dissolved oxygen in IFAS wastewater treatment systems for biological nitrogen removal. Faculty of Engineering, Burapha University, 2005.
7. The effects of hydraulic retention time in IFAS wastewater treatment systems with weak municipal wastewater. Faculty of Engineering, Burapha University, 2005.