Seni Karnchanawong and Wachara Phajee, Effects of Upflow Liquid Velocity on Performance of Expanded Granular Sludge Bed (EGSB) System. journal = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology. March 2009, vol. 27(3). 75 - 78 [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/1138.