FEC production wastewater treatment method

The invention relates to an FEC production wastewater treatment method which comprises the following steps: S1, adding strong base into wastewater, raising the temperature and the pressure, controlling the temperature to be 120-160 DEG C after the temperature is raised, and controlling the pressure to be 120-160kPa after the pressure is raised; and S2, after the pressure is reduced to normal pressure, NaAlO2 powder and Ca (OH) 2 are added. The technical barrier that FEC, fluorine ions and chloride ions in lithium battery electrolyte additive FEC production wastewater are difficult to remove is broken through, and the pretreatment process purposes that the COD concentration is smaller than 500 ppm, the fluorine ion concentration is smaller than 50 ppm and the chloride ion concentration is smaller than 1500 ppm can be achieved. 本发明涉及一种FEC生产废水处理方法，它包括：S1、向废水中投入强碱并升温、升压，升温后温度为120-160℃，升压后压力为120-160kPa；S2、减至常压后，投加NaAlO2粉末和Ca(OH)2。突破了锂电池电解液添加剂FEC生产废水中FEC、氟离子、氯离子难以去除的技术壁垒，可以达到COD浓度小于500ppm，氟离子浓度小于50ppm，氯离子浓度小于1500pp