Nguyen Thai Hung creator Vigneswaran, S. Chairperson Huynh, Ngoc Phien Examination Committee Lohani, B.N. Examination Committee The Federal Republic of Germany Scholarship Donor text th Bangkok Asian Institute of Technology 1983 continuing eng 68 leaves : ill. Various mathematical models are developed by different authors to guide engineers in the calculation and selection of the parameters involved and of the dimensions of the water treatment unit operations. Using these models, the performance of a given unit operation can be predicted. In the present study, the following models were used to predict the performance of flocculation, sedimentation and filtration, respectively. Boadway's Flocculation Model Camp's Sedimentation Model O'Melia-Ali's Filtration Model Suitable ranges of values of the parameters used in individual models are used in integral water treatment model to select the most techno-econo- mic solution. A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering Thesis (M.Eng.) - Asian Institute of Technology, 1983 Water quality management Nepal Phewa Lake Asian Institute of Technology. 301098 20260817173439.0