Design of Surface Based Water Treatment Plant for Namobuddha Municipality

The study is conducted for the calculation of a separate unit for the Water Treatment plant in Namobudhha Municipality. Detailed design and calculation of Treatment plant using Roshi river as the source is presented in this study. This study has calculated the water demand and designed different chemical, physical and chemical units. The objective of this work is to present design steps and calculations for the required units of a WTP. The design of the WTP units was applied to Roshi River water for the Namobuddha Municipality. The units of the treatment processes involved intake, coagulation, flocculation, sedimentation, filtration, disinfection, storage, and pumping. The water treatment plant was made for average discharge and the average population of 0.004 m3/sec and 32000 respectively. Besides, the calculation required some of the parameters to be estimated as all the required data are assumed with the references alongside. The outline results of each unit of the WTP were tabulated. It can be concluded that this work can be used as a source for designing other WTP units. Several factors such as the age of WTP, maintenance, economic and political situations, technical problems, and water demand had a great impact on the removal efficiency of the WTP units.