Electrochemical oxidation of chemi-thermo-mechanical pulping wastewater  

作　　者：Zhijun Hu Yuejin Zhang Danyu Wang 

机构地区：[1]Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province,Zhejiang University of Science and Technology,Hangzhou 310023,China

出　　处：《Journal of Bioresources and Bioproducts》2016年第2期100-105,共6页生物质资源与工程（英文）

基　　金：Natural Science Foundation of China (Grant No.51376162);Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province (Grant No.2016REWB30);Hangzhou Science and Technology Plan Progam (Grant No.2015CK003);the key discipline of Zhejiang Province twelfth five-year“pulping and paper-making engineering”.

摘　　要：Chemi-thermo-mechanical pulping(CTMP)wastewater has high chemical oxygen demand(COD),which inhibits the activity of microorganisms during biological oxidations.Conventional wastewater treatment technologies such as dissolved air flotation,coagulation,and biological treatment,are insufficient to treat the CTMP wastewater to meet the environmental requirements.There remains a need for advanced wastewater treatment technologies,which can be integrated into existing wastewater treatment processes to improve the end-of-pipe water quality.In this study,a heterogeneous electrochemical oxidation process was developed to treat chemi-thermo-mechanical pulp mill wastewater.The Ti substrate anodes were prepared by thermal decomposition and electro-deposition,and characterized by SEM and Tafel curve.The impacts of electrode modification,flowrate,current density,and aeration on the process efficiency were investigated.COD and color density were used to evaluate the removal efficiency of organic pollutants.Results show that the Ti/SnO_(2)+Sb_(2)O_(3)+MnO_(2)/PbO_(2) electrode exhibited the best performance in terms of COD and color removal efficiency.SEM observation revealed that the electrode surface was smooth and compact,with numerous uniform micro pores of which the inner walls were covered with tiny crystals.Under the studied conditions,color removal reached 90%,while COD removal was about 60%.

关 键 词：Electrochemical oxidation WASTEWATER Chemi-thermo-mechanical pulping CTMP Chemical oxygen demand COLOR 

分 类 号：TS7[轻工技术与工程—制浆造纸工程]