厌氧-好氧-混凝-Fenton工艺处理医药中间体废水研究  

Study on Treatment of Pharmaceutical Intermediates Wastewater Using Anaerobic-aerobic-coagulation-Fenton Process

作　　者：向萍[1] 颜智勇[1] 蔡意祥 颜鸣扬 彭博尚 李斐 Xiang Ping;Yan Zhiyon;Cai Yixiang;Yan Mingyang;Peng Boshang;Li Fei(College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China)

机构地区：[1]湖南农业大学资源环境学院,湖南长沙410128

出　　处：《广东化工》2019年第8期144-147,共4页Guangdong Chemical Industry

摘　　要：针对某医药中间体废水组成成分复杂、CODCr浓度高、难降解物质多、可生化性差等特点,对其进行了厌氧-好氧-混凝-Fenton工艺处理的实验研究。结果表明,各处理单元的运行参数为:厌氧处理的水力停留时间为4 d,CODCr的去除率为20.7%;好氧处理的曝气时间为48h,CODCr的去除率为78.2%;混凝处理中混凝剂选用氯化铁,投加量为2 g/L,CODCr的去除率为24.0%;Fenton处理中n(Fe2+)︰n(H2O2)=1.5︰1,30%H2O2用量为15 m L/L、进水pH值为4.5、反应时间t为4 h,CODCr的去除率能达到40%左右。该组合处理工艺对医药中间体废水中CODCr的总去除率可达到90%以上。Pharmaceutical intermediates wastewater had the characteristics of complicated composition, high CODCr concentration, many resistant-degradation materials and poor biodegradability. The experimental study on anaerobic-aerobic-coagulation-Fenton process was carried out. The results showed that the operating parameters of each treatment unit were as follows: the hydraulic retention time of anaerobic treatment was 4 days, the removal rates of CODCr was 20.7 %.;the aeration time of aerobic treatment was 48 hours, the removal rates of CODCr was 78.2 %;Fe Cl3 was selected as the coagulant in the coagulation, the dosage was 2 g/L, the removal rates of CODCr was 24.0 %;in the Fenton process, n(Fe2+)︰n(H2 O2) was 1.5︰1, 30 % H2 O2 dosage was 15 m L/L, pH was 4.5, the reaction time was 4 h, the removal rates of CODCr could reach about 40 %. The combined treatment process could achieve a total removal rate of more than 90 % of the CODCr in the pharmaceutical intermediates wastewater.

关 键 词：医药中间体废水 厌氧 好氧 混凝 FENTON 

分 类 号：X5[环境科学与工程—环境工程]