高浓度危险化工废液消解技术研究  

Study on digestion technique of hazardous chemical waste liquid

作　　者：潘理黎[1] 程海岩[1] 王潇[1] 严金英[1] 于国峰[1] 邱婧伟[1] 赵静[1] 

机构地区：[1]浙江工业大学生物与环境工程学院,浙江杭州310032

出　　处：《浙江工业大学学报》2011年第5期516-519,共4页Journal of Zhejiang University of Technology

基　　金：杭州市科技发展项目(20061133B24)

摘　　要：采用铁炭微电解-絮凝沉淀-臭氧技术对高浓度危险化工废液进行预处理.研究表明,铁炭法优化工艺条件的pH值为5,铁炭体积比为V(Fe)∶V(C)=2∶1,反应时间30min,反应2次;絮凝沉淀反应条件为:初始pH值在7～8,投加PAM 2mg/L,饱和氢氧化钙500mg/L;臭氧优化工艺条件为絮凝沉淀出水1.8L,初始pH值为9.5,氧气流量为80L/h,反应时间为10min.实验室优化工艺条件下CODCr总去除率达到96.8%,B/C由0.1提高至0.35,提高了废水的可生化性.A combined process including Fe/C micro-electrolysis, coagulation sedimentation and Oa oxidation was used to pretreat hazardous chemical waste liquids with high concentrations. The results showed that, for the Fe/C micro-electrolysis process, the optimal condition was： the pH value was 5, the volume ratio of iron to carbon was V（Fe） = V（C）=2 ： 1, the reaction time was 30 min and reaction number was 2; for the coagulation sedimentation reaction, the optimal condition was, initial pH was between 7 and 8, dosage of PAM was 2 mg/L and Ca（OH）2 was 500 mg/L; for the Oa oxidation process reaction, the optimal condition was：the volume of wastewater was 1.8 L treated by coagulation sedimentation process, initial pH was 9.5, O2 flow rate was 80 L/h, reaction time was 10 min. Under the optimal conditions, the removal rate of CODcr was 96.8 %, and the B/C ratio increased from 0. 10 to 0. 35, indicating that the biodegradation capacity was greatly improved.

关 键 词：铁炭微电解 化工废液 预处理 

分 类 号：X703.1[环境科学与工程—环境工程]