It is proved that the sedimentation proportion of particles can be adjusted in sealing material by changing the amount of carboxymethylcellulose sodium,which improves its pumping performance and sealing effect.

According to the established model, the study analyzes the effect of sludge recirculation taken by suction dredge on particle setting,in horizontal sedimentation tank.

When to solve solid-liquid suspension rheology determine the particle sedimentation using the way of fluid circulation,the selction of the circulation speed should ensure that all the particles involved in the cycle,and the distribution of particle concentration should be uniform in the measurement space.

Autumn vertical flux of settling particulate matter at three typical stations in the Yellow Sea;

Among these methods Particle Co-sedimentation is one of the most promising ways to fabricate large-scale profiles with continuous and smooth variations in composition and microstructure.