Suyanee Nachaiyasit creator Samorn Muttamara Chairperson Hum, Ke Siong Examination Committee Shin, Hang-Sik Examination Committee Australian Government Scholarship Donor text th Bangkok Asian Institute of Technology 1987 monographic eng 50 p. Prominent record of bioaugmentation technique in wastewater treat ment technology made this study to launch out. LLMO was the mixed culture bacteria used in this study . Due to the limitation of the system used, stringent conditions were faced in testing LLMO ability. Under the loadings of 1. 3 and 1. 9 mg COD/mg MLSS. d whence MLSS equal ed to 3 and 2 g/l respectively including reduced aeration at the on-off aeration cycl ing period equaled to 2 h, no significant difference in COD r emoval ef ficiency between the LLMO enhanc ed system and control were observed. When the on-off aeration cycling period extended to 3 h, excessive bulking occurred within 3 days. In case of shock loading study only the condition at the on-off aeration cycling period equaled to 2 h and 100% increase of influent flow rate were runned leading to excessive bulking occurring within 5-7 day. A thesis submitted in partial fulfilment of the requirements for the degree of Master of Science, School of Environment, Resources and Development Thesis (M.Sc.) - Asian Institute of Technology, 1987 Sewage Purification Activated sludge process Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B19243 http://203.159.5.9/ait-thesis/detail.php?q=B19243 011298 20260817161455.0