Flocculation experiment study of muddy dredger fill in seaside based on Zeta potential

In this paper, the Zeta potential change process on colloid particles′ surface of mud with high con-centration and muddy dredger fill in Tianjin and Lianyungang was studied after adding high molecular weightCPAM, APAM, NPAM, PAC, organic and inorganic mixed solvent. The test results show that potential changes ofdredger fill in the two places are similar. All kinds of flocculants can make hydraulic fill slurry form colloid andcause settlement, and CPAM, PAC, PAC+CPAM, PAC+NPAM can make Zeta potential on colloid particles′ surfaceof dredger fill change between positive and negative. Slurry separation is obvious, and the combined flocculation ofPAC+NPAM is the most ideal. When the Zeta potential is between 0 and 4.927, it is beneficial to slurry flocculate.