Fluorine-feeding wastewater zero discharging treatment process used in steroid drug production

A fluorine-feeding wastewater zero discharging treatment process used in steroid drug production comprises the following treatment steps that A, dichloromethane is adopted for two times of extraction,main material recovery is performed with an extracting solution, and the recovered main material is marked as an intermediate product I; B, magnesium chloride 0.4-0.5 time of the mass of wastewater is added into the wastewater obtained after extraction in the step A, stirring at room temperature is performed for reaction for 2-4 hours, cationic polyacrylamide is added for flocculation and filtration after reaction is completed, an obtained filter cake magnesium fluoride is collected and dried, and the recovered magnesium fluoride is marked as an intermediate product I; C, sodium hypochlorite0.5-0.6 times of the mass of filtrate obtained after filtration in the step B is added, stirring at room temperature is performed for reaction for 2-4 hours, cationic polyacrylamide is added for flocculation and filtration, an