摘要
针对我国高校实验室高浓度化学废液污染的难题,设计了铁炭微电解-超声波-Fenton法-絮凝沉淀组合处理技术。铁炭微电解的优化工艺条件为:pH=4,V(Fe):V(C)=2:1,固液比为1:4,反应时间60min,循环反应2次;Fenton氧化工艺条件为:pH=4,投加Fenton试剂,反应时间60min;絮凝沉淀反应条件为:pH值为7,投加PAM5mg/L,PAC300mg/L。试验结果表明,废液CODCr总去除率达90%,且生化性明显提高,为高校实验室高浓度化学废液无害化处理探索可行的途径。
In order to properly deal with chemical waste from university laboratory, experiments are designed using combined iron carbon micro electrolysis-uhrasound-Fenton-flocculation precipitation technology , to explore the suit- able condition for chemical waste removal. Results suggest optimized condition for iron carbon micro electrolysis process regester： pH=4,V（ Fe ）： V（ C ） = 2：1, solid-liquid ratio is 1：4, reaction time regesters 60 min, cycled the reaction twice; the condition for fenton oxidation process is： pH=4, Fenton reagent addiction, 60min for reac- tion time; while conditions for the coagulation sedimentation reaction appear to be ： pH=7, the dosage of PAM is 5 mg/L and PAC is 300 mg/L . Experimental results suggest total removal rate of CODcr registers 90% with im- proved biochemicality of the waste liquid. Finally, the paper concludes the proposed technique proves to be a feasible way for laboratory waste disposal.
出处
《三峡环境与生态》
2012年第3期12-15,59,共5页
Environment and Ecology in the Three Gorges
基金
浙江省大学生科技创新活动计划(新苗人才计划)(2011R403031)
关键词
实验室化学废液
废液无害化
铁炭微电解
FENTON法
laboratory chemical waste
waste minimization
ferric carbon micro electrolysis
Fenton method
