INTERNATIONAL JOURNAL OF ADVANCED RESEARCH IN ENGINEERING AND TECHNOLOGY (IJARET)

Abstract

The scope of the present study is optimizing the parameters which affect coagulation of turbid water namely, slow mix velocity gradient, dose of blend coagulant Moringa Oleifera & Alum, basin parameters with different initial turbidity water samples. Initially these parameters are varied randomly, while keeping all other parameters constant for carrying out optimization. Optimum dose for removal turbidity using blend coagulant required for the different initial turbid water samples (e.g, 150 NTU, 300 NTU and 500 NTU), is found out. While other parameters like jar configurations, velocity gradient, slow mixing time, settlement time are kept constant. Dose of coagulant which is found to be optimum during the initial study is used in the all the testing. Results are analyzed by preparing the graphs of Dose versus Residual turbidity. Effect of various jar configurations such as Circular Non Baffled Jar (CNBJ), Circular Baffled Jar (CBJ), Square Non Baffled Jar (SNBJ) and Square Baffled Jar (SBJ) is studied, while all other parameters are kept constant. The dose of coagulant is again optimized with respect to Jar Configurations by observing the effect of different Jar Configurations and results are analyzed. Also the study for different velocity gradients like 40 s -1 , 65 s -1 and 90 s -1 is carried out, while other parameters are kept constant except SBJ and CBJ, which are found most influential. Results are analyzed & presented in the graphs between residual turbidity versus velocity gradient.