A treatment method for fluorine ion and chlorine ion-containing wastewater
含氟离子和氯离子酸性废水处理技术

A method for treating the fluorine ion and chlorine ion-containing wastewater with sodium aluminate and lime was studied. The primary and secondary factors that affected removing fluoride ion by adding lime were pH, fluoride ion concentration and reaction time. The primary and secondary factors that affected removing chloride ion by adding sodium aluminate and slaked lime were chloride ion concentration, the ratio of sodium aluminate dosage and chloride ion concentration and reaction time. Under the best experimental conditions, the content of fluoride ion in wastewater could be reduced below 2 mg/L, the content of chloride ion in wastewater could be reduced below 201 mg/L and meet the national discharge standard.