flocculation of aluminum sulfate application

Earlier we said aluminum sulfate use is the second largest in wastewater treatment applications, it is a typical industrial water treatment chemicals , industrial water treatment has a wide range of processing capabilities, however, it is most important is PVC profile stabilizer  as flocculation agent. So, what is the flocculation and sedimentation , flocculation applications it is kind of how it .
What is flocculation
Flocculation is particulate matter in the water for flocculation and sedimentation process. After adding coagulant in water , in which colloidal and suspended solids dispersed particles generated in the interaction of molecular forces floc and in the settlement process they collide cohesion, its size and quality continues to become larger, increasing the settling velocity . Depends not only on removal of suspended  Methyl tin solids sedimentation rate , and the depth and precipitation . Surface water formed after adding coagulant alum , sewage organic suspended solids in the activated sludge process will appear in the precipitation flocculation phenomenon.
Flocculation of aluminum sulfate application simply say that aluminum sulfate dissolved in water to make the water and natural rubber fine particles agglomerate into large floc, thereby  liquid stabilizer removing from the water , so as water supply and wastewater coagulant. Flocs grow to a volume after the force of gravity from the water phase precipitation , thereby removing large suspended solids in the wastewater , so as to achieve the effect of treatment . Of course, as an industrial water treatment chemicals , aluminum sulfate is not currently the best results , it is less efficient than the current polyacrylamide flocculation is strong, but the price is much lower than it polyacrylamide , PAC and other polymeric flocculation agent