Experimental Study on the Effect of pH on the Flocculation Demulsification Efficiency

Abstract

40 mg/L of artificial emulsified oil water was processed with Al2 (SO4)3, FeCl3 and PAC and PAM as flocculants. Determined the feasible dosage and settling time of each flocculant, researched the effect of pH on the demulsification of different flocculants. The results showed that the demulsification effect of four kinds of flocculants is all affected by pH, and the effect of inorganic flocculant was significantly affected by pH. The maximum removal rates of aluminium sulphate and polyaluminium chloride were 62.0% and 80.7% at pH 7. However, the maximum removal rates of Iron trichloride and polyacrylamide were 77.6% and 85.2% at pH 8.