In this paper,the present situation of fluorine-containing wastewater is analyzed,the causes and treatment difficulties of high-salt fluorine-containing wastewater are described,and the characteristics and advantages and disadvantages of the process including adsorption column adsorption,resin ion exchange process,activated carbon fly ash adsorption process,chemical reagent precipitation process,electrodialysis process and electrocatalytic defluorination process are summarized in combination with the water quality characteristics of high-salt fluorine-containing wastewater.Based on the experimental results of a coking wastewater with high salt fluorine content in Tangshan,the effects of chemical precipitation and electric flocculation were compared with those of coking wastewater with high salt fluorine content.Finally,by coupling chemical precipitation method and electroflocculation defluorination process,the influent fluoride ion was reduced from 181.0 mg/L to 16.3 mg/L under the conditions that the dosage of defluorination agent was 1‰,the electroflocculation voltage was 5.4 V,and the pH was 8.5,and a new idea was explored for the treatment of high-salt fluorine-containing wastewater.
关键词
高盐含氟废水/焦化废水/电絮凝除氟/电化学除氟
Key words
high salt fluorine wastewater/coking wastewater/electric flocculation defluorination/electrochemical defluorination
维普
万方数据