Advanced treatment method for medium-high concentration coal gasification fluorine-containing wastewater

The invention discloses an advanced treatment method for medium-high concentration coal gasification fluorine-containing wastewater. The method comprises the following steps: firstly, inputting coal gasification fluorine-containing wastewater into a primary reaction tank for reaction and flocculation, enabling the obtained wastewater to automatically flow into a primary sedimentation tank for solid-liquid separation, and obtaining supernate and magnetic sludge after separation; the supernate automatically flows to a secondary reaction tank for reaction and flocculation, and wastewater obtained after flocculation automatically flows to a secondary sedimentation tank for solid-liquid separation to obtain supernate and magnetic sludge; the obtained supernatant overflows to a discharge tank for collection, and then is discharged to a circulating water system for recycling; the two parts of obtained magnetic-containing sludge are respectively treated by a primary magnetic recovery system and a secondary magnetic r