Subrata Hait and Debabrata Mazumder, High-rate Wastewater Treatment by a Shaft-type Activated Sludge Reactor. journal = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology. January 2011, vol. 49(1). 1 - 6 [viewed 21 September 2024]. Available from: https://publications.waset.org/pdf/14319.