废铁屑-膜分离法处理含铬废水的研究  

Research on Chromium-containing Wastewater Treatment by Waste Iron-membrane Separation

作　　者：李爱阳[1] 李大森 胡波年[1] 蔡玲[1] 朱志杰[3] 

机构地区：[1]湖南工学院化工系,衡阳421002 [2]长沙远大住宅工业有限公司,长沙410001 [3]中南大学化学化工学院,长沙410083

出　　处：《武汉理工大学学报》2008年第9期72-75,共4页Journal of Wuhan University of Technology

基　　金：湖南省教育厅科技计划项目(07C030);衡阳市工业科研开发计划项目(06KG59)

摘　　要：采用中和沉降-膜分离法处理含铬废水,此法处理含铬废水效果明显。试验结果表明:处理后的含铬废水出水水质与中和沉降条件、过滤条件等操作参数有关。当中和pH值为3—4,还原时间为2 h,纳滤膜过滤温度为70℃,操作压力为0.7 MPa,进料流量为50 L/h时,含铬废水中的Cr(Ⅵ)、总Cr、CODCr和悬浮物的去除率分别达到99.5%,99.5%,97%和93.1%,出水水质达到国家《污水综合排放》一级标准。Neutraliza sedimentation-membrane separation was applied to treat chromium-containing wastewater. In this way, it had effect for treating chromium-containing wastewater. The results showed that the water quality of treated chromium-containing wastewater connected with the operation parameter, such as neutraliza-sedimentation and filtration condition. When neutraliza pH is 3--4, reduction time was 2 h, nanofiltration-filtration temperature, operation pressure and feed flow rate are 70 ℃, 0.7 MPa, and 50 L/h, the removal rates of Cr （ Ⅵ ）, total Cr, CODCr and suspension substance reached 99.5 %, 99.5 %, 97 % and 93.1% respectively. The effluent water could reached 《National Integrated Wastewater Discharge Standards》 national first class discharge.

关 键 词：含铬废水处理 废铁屑 纳滤 还原 沉降 

分 类 号：X703.1[环境科学与工程—环境工程]