摘要
研究了不同铁铝硅摩尔比条件下新型混凝剂对氟的去除效果,并考察熟化时间对混凝剂除氟性能的影响。结果表明,新型混凝剂在(Al+Fe)/Si(mol/mol)=5且Al/Fe(mol/mol)=1时除氟效果最好,60 min后氟离子(F^-)浓度降至5. 3 mg/L,除氟率达81. 1%。但是,聚硅酸中单独引入铁盐或铝盐时除氟效果较差。新型混凝剂放置15 d对除氟效果影响不大。该新型混凝剂在废水除氟方面具有应用潜力。
The fluoride removal by a new coagulant with different Fe / Al / Si molar ratios was investigated and theeffect of aging time on fluoride removal was also studied. The results indicated that the highest efficiency of fluorideremoval was obtained with （Al＋Fe） / Si （mol / mol） of 5 and Al / Fe （mol / mol） of 1, and the concentration of fluorine ion（F-） declined to 5. 3 mg / L after 60 min reaction, which achieved 81. 1% efficiency of F-removal. However, aninsufficient F-removal was obtained when either ferric salt or aluminum salt was added into polysilicate. The aging time of15 d had little influence on fluoride removal. The new coagulant had the potential of application.
作者
许德超
衷从强
朱婷婷
阳立平
尹魁浩
彭盛华
XU De-chao;ZHONG Cong-qiang;ZHU Ting-ting;YANG Li-ping;YIN Kui-hao;PENG Sheng-hua(Shenzhen Research Academy of Environmental Sciences,Guangdong Shenzhen 518001;State Environmental Protection Key Laboratory of Drinking Water Source Management andTechnology（Shenzhen）,Guangdong Shenzhen 518001;Shenzhen Key Laboratoryof Emerging Contaminants Detection ＆ Control in Water Environment,Guangdong Shenzhen 518001,China)
出处
《广州化工》
CAS
2018年第18期70-73,共4页
GuangZhou Chemical Industry
基金
深圳市战略新型产业发展专项资金(JSGG20160428153059398)
关键词
摩尔比
新型混凝剂
除氟
molar ratio
new coagulant
fluoride removal
