纳米Ni/Fe用于去除染料生产废水二级生物处理出水中AOX和色度的研究  

Removal of AOX and Chroma in Biologically Treated Effluent of Chemical Dyestuff Wastewater with Nanoscale Ni/Fe

作　　者：舒小铭 徐灿灿 刘锐 赵远[1] 陈吕军[2,3] 

机构地区：[1]常州大学环境与安全工程学院,常州213164 [2]浙江清华长三角研究院生态环境研究所,浙江省水质科学与技术重点实验室,嘉兴314006 [3]清华大学环境学院,北京100084

出　　处：《环境科学》2016年第2期655-661,共7页Environmental Science

基　　金：国家高技术研究发展计划(863)项目(2013AA06A305);浙江省科技计划项目(2013C31107);嘉兴市科技计划项目(2014AY21018)

摘　　要：用纳米Ni/Fe材料深度处理染料生产废水的生物处理出水,考察了不同Ni负载量（质量分数0~5%）、废水初始p H值（4.1~10.0）、Ni/Fe投加量（1~5 g·L-1）、反应时间（0.5~96 h）下对可吸附性有机卤代物（absorbable organic halogens,AOX）的去除率和脱色率.结果表明,AOX和色度去除率随Ni负载量的增加先升高后减少,随废水初始p H值的降低和Ni/Fe投加量的增加而持续提高.最优化条件为Ni负载量1%、废水初始p H 4.1和Ni/Fe投加量3 g·L-1,该条件下AOX和色度的24 h去除率分别为29.2%和79.6%,96 h去除率分别为50.6%和80.7%.GC-MS分析表明经材料处理后废水中氯代苯胺类、对硝基苯胺、4-甲氧基-2-硝基苯胺及卤代烷烃等有毒有害物质得到高效去除.Nanoscale Ni / Fe was applied to biologically treated effluent of chemical dyestuff wastewater. The removal rates of absorbable organic halogens（ AOX） and chroma were investigated at different Ni loadings（ 0-5%）,initial wastewater p H（ 4. 1-10. 0）,Ni / Fe dosage（ 1-5 g·L- 1） and reaction time（ 0. 5-96 h）. The results showed that the removal rates of AOX and chroma firstly increased and then decreased with the increase of the Ni loading,while continuously increased with the decrease of the initial wastewater p H and the increase of Ni / Fe dosage. The optimal condition was Ni loading of 1%,initial wastewater p H of 4. 1 and Ni / Fe dosage of 3 g·L- 1,under which 29. 2% of AOX and 79. 6% of chroma were removed after 24 h reaction,and 50. 6% of AOX and 80. 7% of chroma were removed after 96 h reaction. GC-MS analysis revealed that toxicants such as chlorinated anilines,p-nitroaniline,4-methoxy-2-nitroaniline and halogenated hydrocarbons were efficiently removed.

关 键 词：纳米Ni/Fe 染料生产废水 可吸附性有机卤代物 还原脱卤 色度 

分 类 号：X703.1[环境科学与工程—环境工程]