| 摘要 |
PURPOSE: A processing method of wastewater containing fluorine is provided to improve process efficiency of the wastewater by separating steps for processing the wastewater, and to reduce the fluorine concentration of final processed water to 10mg/L or less. CONSTITUTION: A processing method of wastewater containing fluorine comprises the following steps: producing calcium fluoride by reacting wastewater containing high concentration fluorine with fluorine concentration 50,000 ~ 500,000 mg / L and slaked lime; dehydrating the calcium fluoride with a coagulant including acrylamide - acrylic acid copolymer; gaining the wastewater containing low concentration fluorine of 10,000 ~ 30,000 mg / L; producing the calcium fluoride; hydrolyzing fluoboric acid(HBF4) within the processing water; putting a coagulant aid including a hydrolyzed effluent, a lime slurry, acid and acrylamide - acrylic acid copolymer, forming flock and separating solid from liquid. |
