The use of polyaluminum chloride treatment of sewage filtration method Polyaluminum chloride manufacturers polyaluminum chloride treatment of wastewater when the filter there are four ways: The first use of grid filter, filter media for the grid or the filter , Its typical equipment, grille, screen and microfilter. To remove coarse suspended solids, such as weeds, rags, fibers, pulp and so on. The second use of membrane filtration, the main equipment reverse osmosis, ultrafiltration and electrodialysis. A special semi-permeable membrane filter medium, in a certain driving force (such as pressure, electric field force, etc.) for filtration, due to the pore size is very small and selective, you can remove water bacteria, viruses, organic matter and soluble solute . The third use of deep filtration, the use of granular filter media, such as quartz sand, anthracite and so on. Due to the existence of pores between the filter particles, the wastewater passes through a certain depth of the filter layer and the suspended matter in the water is intercepted. The fourth use of microporous filtration, the use of forming filters, such as filter cloth, filter, sintered filter, honeycomb filter, etc., but also in the filter medium pre-coated with a layer of filter aid (such as diatomaceous earth) to form a small pore The filter cake, used to remove the fine particle size of the particles.