Papers by Keyword: Removal Rate of Turbidity

Abstract: 0.5g/L of kaolin suspension was took as the sample for coagulation. The jar test was adopted to examine the effects of the Compound Bioflocculant (CBF) dosage, hydrogen ion concentration (pH) and the CaCl2 dosage as coagulation aid on the removal efficiency of turbidity. The experimental results showed that CBF had an effective performance with dosage of 4-5mg/L in the alkalescence environment. The optimal conditions for the removal efficiency of turbidity by CBF were the dosage of 4ml/L and pH of 7.5. CBF added coagulation aid(CaCl2) could play effect of flocculation. Adding 1.0ml / L of 10% concentration solution of CaCl2 could achieve the best flocculation effect. Temperature had minimal impact on the removal efficiency of turbidity , it indicated that the removal rate of turbidity at low temperatures was not obviously influenced.

Abstract: Alkalizer or coagulation and alkalizer technology were adopted to pretreat seawater in the study. Turbidity removal was investigated with different pH, mixing time,and mixing speed. The A was the best by contrasting alkalizer A, B and C. Turbidity removal was 99.4%. The effect of boron removal in the seawater was also studied. The results showed that the pH value has a great impact on the boron removal. The highest boron removal was 89% by alkalizer A under pH 11.The best reaction condition for turbidity removal : pH value 10.8,stirring rate 200r/min,reaction time 10 minutes and dosage of PAM 0.5 mg/L.