絮凝-光催化降解联合处理造纸废水  

Flocculation-photocatalytic Degradation Combined Treatment of Papermaking Wastewater

作　　者：杜金逵[1] 龚文琪[1] 饶波琼[1] 韩沛[1] 

机构地区：[1]武汉理工大学资源与环境工程学院,武汉430070

出　　处：《武汉理工大学学报》2010年第8期80-83,共4页Journal of Wuhan University of Technology

基　　金：国家"863"计划项目(2007AA06Z123);教育部科学技术研究重点项目(02052)

摘　　要：用sol-gel法制备褐铁矿/掺Fe3+TiO2光催化剂,通过测试表征和回收实验表明,褐铁矿颗粒表面负载上一层较为均匀的TiO2膜,且核/膜结构较为牢固;利用絮凝剂和自制光催化剂对造纸废水进行絮凝-光催化降解联合处理实验表明,经过联合处理CODCr去除率达到94%,CODCr由3 000 mg/L降为183 mg/L,符合国家排放标准。Limonite/Fe3＋TiO2 composite photocatalytic material prepared by solgel method showed that it had been loaded with a homogeneous TiO2 film on its surface,and it had a firm nuclear/membrane structure.The experiments of flocculation-photocatalytic degradation combined treatment of papermaking wastewater using the flocculant and the self-made photocatalyst showed that： the removal rate of CODCr attained 94% after combined treatment and the residual CODCr was about 183 mg/L as compared with 3 000 mg/L of the influent,which accords with the national discharge standard.

关 键 词：絮凝 光催化 TIO2 造纸废水 

分 类 号：X5[环境科学与工程—环境工程]