The Study on the Treatment Process of High-Salinity Fluoride-Containing Wastewate
This paper investigates the treatment of high-salinity fluoride-containing wastewater,aiming to provide a reference for practical industrial applications by perfecting the treatment process and optimizing key parameters through laboratory and pilot-scale experiments.The combined post-treatment process employs chemical precipitation,adsorption,high-pressure reverse osmosis,and evaporation.Fluoride in the wastewater is removed as calcium fluoride,effectively reducing fluoride content to below 1 mg/L.The excessive salt in the wastewater is concentrated and separated using a reverse osmosis system,with the salinity of the permeate consistently maintained below 1 000 mg/L.The reverse osmosis system allows for the recovery of 75％of the permeate for reuse.The feasibility and stability of the process and parameters were validated through pilot-scale tests.The results indicate that the optimized treatment process exhibits good stability and feasibility,meets national fluoride discharge standards,conserves water resources,complies with zero liquid discharge policies,and holds significant application value.
high salinity fluoride-containing wastewaterchemical precipitationadsorptionhigh-pressure reverse osmosisprocess optimization
万方数据
维普
