Preparation of alkaline earth coagulant and application study

Alkaline solution of a rare earth (RE) and some northern mixed and heating method of rare-earth ore are used in preparation for a new type of alkaline RE coagulant. Utilize a single factor experiment and orthogonal experiment to decide the best of preparation conditions .Take the coking wastewater for example,comparision with the usual coagulant PFS and PAFC in coagulation test.Experiments show that alkaline earth coagulant coagulation is obvious better than polymerization ferrous sulfate (PFS) and polymerization ferrum aluminum coagulant (PFAC) and has high turbidity removal efficiency, fast floes formation speed, good performance and other settlement characteristics.