The policy direction of sewage treatment is obvious

polyaluminum chloride (pac), also known as polyaluminum chloride and polyaluminum, is a multi-nuclear inorganic polymer high-efficiency coagulant containing different amounts of hydroxyl groups. the molecular formula is [alm(oh)n(h2o)x 】cl3m-n (n≤3m) has the advantages of good coagulation performance, large floc, low dosage, good sedimentation performance, and low alkalinity consumption in water. it is widely used in…