有色金属冶炼污酸扩散渗析的研究
|
摘要
为了对有色金属冶炼污酸进行回收利用,采用DF120阴离子交换膜,进行扩散渗析试验,考察各因素对重金属与酸的分离效果。结果表明,回收液与残液出水流量比越大,稀酸回收率越高;当污酸质量分数为2%~12%时,酸度对金属离子截留率影响较小,酸回收率随酸度的增加而增大;出水流量对扩散渗析过程影响较大,当残液与回收液出水流量为10 m L/min时,硫酸回收率达到83%,Zn2+截留率达到81%,Cd2+截留率达到78%。扩散渗析对重金属离子与酸的分离是较为有效的工艺。
Diffusion dialysis with DF120 anion exchange membrane was used to recycle dilute acid from non-ferrous metal smelting waste acid, the factors influencing the separation effect of heavy metals and acid were investigated. The results showed that, dilute acid recovery rate increased with the rising of the flow ratio of recovery solution to residual liquid. The acidity had a less effect on the metal ions rejection when the waste acid mass fraction was 2%-12%; the dilute acid recovery rate increased with the increasing acidity. The effluent water flow rate had a great influence on the diffusion dialysis process. When the effluent water flow rate of residual liquid and recovery liquid was 10 m L/min, the sulfuric acid recovery rate reached 83%, the rejection rate of Zn2 +and Cd2+reached 81% and 78% respectively. It could be seen that, diffusion dialysis was an effective process for heavy metal ions and acid separation.
Diffusion dialysis with DF120 anion exchange membrane was used to recycle dilute acid from non-ferrous metal smelting waste acid, the factors influencing the separation effect of heavy metals and acid were investigated. The results showed that, dilute acid recovery rate increased with the rising of the flow ratio of recovery solution to residual liquid. The acidity had a less effect on the metal ions rejection when the waste acid mass fraction was 2%-12%; the dilute acid recovery rate increased with the increasing acidity. The effluent water flow rate had a great influence on the diffusion dialysis process. When the effluent water flow rate of residual liquid and recovery liquid was 10 m L/min, the sulfuric acid recovery rate reached 83%, the rejection rate of Zn2 +and Cd2+reached 81% and 78% respectively. It could be seen that, diffusion dialysis was an effective process for heavy metal ions and acid separation.
引文
[1]陈雄.冶炼烟气制酸污酸处理技术研究[J].科技创新与应用,2015,(7):25-26.
[2]易求试.三段石灰-铁盐法处理高砷污酸[J].硫酸工业,2012,(1):46-48.
[3]董冕,刘祖鹏,曹龙文.砷的高效硫化回收技术在污酸处理中应用实践[J].硫酸工业,2014,(2):52-55.
[4]王培栋.硫化中和法除砷工艺探讨[J].新疆有色金属,2012,(S2):98-100.
[5]邵立南,杨晓松.有色金属冶炼污酸处理技术现状及发展趋势[J].有色金属工程,2013,3(5):59-60.
[3]李旺旺,牟林琳,毕亚凡.砷硫铁矿制酸净化工序废稀酸回用的探讨[J].工业用水与废水,2014,45(1):33-35.
[7]TANG J J,ZHOU K G,ZHANG Q X.Sulfuric acid recovery from rare earth sulphate solutions by diffusion dialysis[J].Transactions of Nonferrous Metals Society of China,2006,(4):951-955.
[8]JEONG J,KIM M S,KIM B S,et al.Recovery of H2SO4from waste acid solution by a diffusion dialysis method[J].Journal of Hazardous Materials,2005,(124):230-235.
[9]WEI C,LI X B,DENG Z G,et al.Recovery of H2SO4from an acid leach solution by diffusion dialysis[J].Journal of Hazardous Materials,2010,(176):226-230.
[10]陈明,徐慧,蔡忠萍,等.某矿山酸性废水酸洗液扩散渗析的研究[J].工业安全与环保,2015,41(11):26-28.
[11]孙亚辉,肖连生.扩散渗析回收含铜退镀液中硝酸[J].膜科学与技术,2015,35(3):70-75
[12]刘淑莉,郑雅杰,张寿春.扩散渗析法回收钛白废酸中的硫酸[J].水处理技术,2017,43(2):67-70.
[13]张旭.扩散渗析的理论与应用研究[D].合肥:中国科学技术大学,2014.
[14]ELSEVIER.Bioelectrochemistry and bioenergetics[M].Amsterdam:Elsevier Science S A,1999.
[2]易求试.三段石灰-铁盐法处理高砷污酸[J].硫酸工业,2012,(1):46-48.
[3]董冕,刘祖鹏,曹龙文.砷的高效硫化回收技术在污酸处理中应用实践[J].硫酸工业,2014,(2):52-55.
[4]王培栋.硫化中和法除砷工艺探讨[J].新疆有色金属,2012,(S2):98-100.
[5]邵立南,杨晓松.有色金属冶炼污酸处理技术现状及发展趋势[J].有色金属工程,2013,3(5):59-60.
[3]李旺旺,牟林琳,毕亚凡.砷硫铁矿制酸净化工序废稀酸回用的探讨[J].工业用水与废水,2014,45(1):33-35.
[7]TANG J J,ZHOU K G,ZHANG Q X.Sulfuric acid recovery from rare earth sulphate solutions by diffusion dialysis[J].Transactions of Nonferrous Metals Society of China,2006,(4):951-955.
[8]JEONG J,KIM M S,KIM B S,et al.Recovery of H2SO4from waste acid solution by a diffusion dialysis method[J].Journal of Hazardous Materials,2005,(124):230-235.
[9]WEI C,LI X B,DENG Z G,et al.Recovery of H2SO4from an acid leach solution by diffusion dialysis[J].Journal of Hazardous Materials,2010,(176):226-230.
[10]陈明,徐慧,蔡忠萍,等.某矿山酸性废水酸洗液扩散渗析的研究[J].工业安全与环保,2015,41(11):26-28.
[11]孙亚辉,肖连生.扩散渗析回收含铜退镀液中硝酸[J].膜科学与技术,2015,35(3):70-75
[12]刘淑莉,郑雅杰,张寿春.扩散渗析法回收钛白废酸中的硫酸[J].水处理技术,2017,43(2):67-70.
[13]张旭.扩散渗析的理论与应用研究[D].合肥:中国科学技术大学,2014.
[14]ELSEVIER.Bioelectrochemistry and bioenergetics[M].Amsterdam:Elsevier Science S A,1999.