An Efficient Fluorine-removal Agent and its Study on Fluorine-removal in High Salt Wastewater
An efficient fluorine-removal agent contains active ingredients such as polyaluminium chloride,hexahydrate aluminum chloride,aluminum sulfate,and zinc sulfate.According to the mass percentage,it contains 70%～80%polyaluminium chloride,5%～10%hexahydrate aluminum chloride,5%～10%aluminium sulfate and 0.1%～1.0%zinc sulfate.The usage method is to prepare a highly efficient composite fluoride removal agent into a solution of 500 g/L,add it to high salt wastewater with an initial concentration of fluoride ions of 10.6 mg/L,stir and precipitate,adjust the endpoint pH to around 7.0,and achieve a fluoride removal rate of over 95%,which can reach the effluent index of 1.0 mg/L or below.
efficient composite fluoride removal agentpolyaluminium chloridezinc sulfatehigh salt wastewaterdefluoridation
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