Abstract: In this study; the effect of type and amount of flocculant, the solid ratio and particle size parameters on flocculation process were determined using quartz sample. First, the effect of flocculant type and amount was investigated by using waste water samples prepared with anionic, cationic, nonionic (non-ionizing) flocculants at fixed solid ratio and particle size. Once the best resultant flocculant type has been determined as anionic flocculant, the effects of solid ratio and particle size is determined. In the case of fixed particle size, more flocculant is required for increasing solid fraction. As the particle size decreases, the residual turbidity of the suspensions increases. Using the anionic flocculant (SPP 508) at a constant solid ratio (0.06%), the lowest turbidity value of the cleaned water for the -20 μm size with 0.06 mg/L dosage was reduced from 210 NTU to 9.6 NTU, while for the -5 μm size, it can be reduced from initial 430 NTU to the lowest turbidity value of19.3 NTU with 0.12 mg/L dosage.