NOVEL COMPOUNDING METHOD FOR HIGH-EFFICIENTLY REMOVING PHOSPHORUS

The present disclosure discloses a novel compounding method for high-efficiently removing phosphorus, comprising using a calcium carbide slag and polyferric sulfate (PFS) for coagulation- flocculation and sedimentation of a water sample in two stages, 5 firstly adding a certain amount of the calcium carbide slag to a phosphorus-containing water sample for pretreatment, and removing a sediment after the pretreatment is completed, to obtain an effluent; then adding a certain amount of polyferric sulfate (PFS) to the effluent for further reaction, and taking the effluent lO otained for determination and analysis, the concentration of phosphorus in the effluent reaches a Tier-1A discharge standard. The present disclosure uses the calcium carbide slag as a water treatment material, which effectively solves the problem of environmental pollution caused, by its accumulation in a large 15 amount, and brings good economic and social benefits. The combination of the calcium carbide slag with polyferric sulfate (PFS) can complement with each other, improve wastewater treatment effect, broaden. the scope of application, and reduce treatment costs. 20