纳米TiO_2可见光催化-SBR组合工艺降解制药废水  

DEGRADATION OF PHARMACEUTICAL WASTEWATER BY NANO-TiO_2 VISIBLE LIGHT CATALYTIC-SBR COMBINATION PROCESS

作　　者：张明明[1] 董业硕[2] 费学宁[1,2] 解立平[3] 张天永[2] 

机构地区：[1]天津城市建设学院环境与市政工程学院天津市水质科学与技术重点实验室,300084 [2]天津大学化工学院,300072 [3]天津工业大学环境与化学工程学院天津市中空纤维膜材料与膜过程重点实验室,天津300160

出　　处：《水处理技术》2013年第8期93-98,共6页Technology of Water Treatment

基　　金：天津市应用基础及前沿技术研究计划重点资助项目(11JCZDJC 24900);2011年天津市滨海新区"十大战役"科技计划项目(2011-BH14003);教育部重点课题(211005)

摘　　要：以絮凝为预处理和后续处理工艺,以"纳米TiO2可见光催化-SBR"为组合主体工艺处理制药废水。通过对组合工艺1(絮凝、光催化、SBR、絮凝、出水)和组合工艺2(SBR、絮凝、光催化、絮凝、出水)处理制药废水效果的比较分析可知,组合工艺1的处理效果要高于组合工艺2,主要是因为TiO2光催化预处理反应不仅可以去除一定量的COD,降低原制药废水的负荷,还可有效改善原废水的可生化性和生物毒理性,为后续SBR生物处理提供适宜的处理水质。对光催化降解制药废水的动力学研究表明,光照强度越高,其光催化降解反应遵循二级反应动力学,随着光照强度的减弱,其光催化降解反应趋向于三级反应动力学。In this paper,flocculation as pretreatment and follow-up process,＂nano-TiO2visible light photocatalytic-SBR＂ as the main part of combination process to treatment pharmaceutical wastewater.Through the analysis of the comparison of the combined process 1（flocculation,photocatalysis,SBR,flocculation,effluent） and the combined process 2（SBR,flocculation,photocatalysis,flocculation,effluent） is that：pharmaceutical wastewater treatment effects： combined process 1 to be much higher than 2,mainly because the TiO2photocatalytic pretreatment reaction can not only remove a certain amount of the COD reduce the load of the raw wastewater,also can be effective in improving biodegradability and biological toxicity of the raw wastewater,for follow-up SBR biological treatment is suitable for water treatment.Kinetics of photocatalytic degradation of pharmaceutical wastewater： the higher the light intensity and its photocatalytic degradation reactions follow two reaction kinetics,with the weakening of the light intensity,the photocatalytic degradation reactions tend to be three kinetics.

关 键 词：TIO2光催化 SBR 制药废水 动力学级数 动力学模型 

分 类 号：X787[环境科学与工程—环境工程] X703.1