CoFe_(2)O_(4)@MS活化过一硫酸盐处理6-硝氧体废水的研究  

Treatment of 6-Nitrogen Wastewater by CoFe_(2)O_(4)@MS Activated Peroxymonosulfate

作　　者：徐俐 刘东方[1,2] 安晓静 付明翔 童笑琴 曹振华 XU Li;LIU Dongfang;AN Xiaojing;FU Mingxiang;TONG Xiaoqin;CAO Zhenhua(School of Environmental Science and Engineering,Nankai University,Tianjin 300350,China;Nankai Cangzhou Bohai New Area Green Chemical Research Co.,Ltd,Cangzhou 061100,China)

机构地区：[1]南开大学环境科学与工程学院,天津300350 [2]南开沧州渤海新区绿色化工研究有限公司,河北沧州061100

出　　处：《水处理技术》2022年第8期48-53,共6页Technology of Water Treatment

基　　金：沧州渤海新区制药与化工行业高盐有机废水处理与零排放研究与应用(NCC2020FH11)。

摘　　要：采用溶胶-凝胶法制备了催化剂CoFe_(2)O_(4)@MS,对以其活化过一硫酸盐(PMS)处理重要染料中间体废水6-硝氧体废水进行了研究。采用扫描电子显微镜(SEM)、X射线衍射仪(XRD)和傅立叶变换红外吸收光谱仪(FTIR)对催化剂进行表征。系统研究了PMS投量、催化剂投量、初始pH和反应温度对CoFe_(2)O_(4)@MS/PMS体系处理6-硝氧体废水的影响。结果表明:CoFe_(2)O_(4)@MS/PMS催化体系对6-硝氧体废水COD降解效果显著;6-硝氧体废水COD降解率随PMS投量先增加后减少,随催化剂投量和温度的增加而增加;6-硝氧体废水COD降解在强酸性条件下效果最好,在强碱性条件下效果大幅降低。在实际废水处理时,选择PMS投量12 g/L、催化剂投量0.5 g/L,在常温(25℃)下无需调pH,反应60 min内对6-硝氧体废水的COD降解率可达99.84%。实验结果可为非均相过渡金属催化剂活化PMS处理萘磺酸类染料废水提供参考。The catalyst CoFe_(2)O_(4)@MS was prepared by the sol-gel method,and the treatment of important dye intermediate 6-nitrite wastewater with activated peroxymonosulfate(PMS)was studied.The catalyst was characterized by scanning electron microscope(SEM),X-ray diffractometer(XRD)and Fourier transform infrared absorption spectrometer(FTIR).The effects of PMS dosage,catalyst dosage,initial pH and reaction temperature on the treatment of 6-nitrite wastewater by the CoFe_(2)O_(4)@MS/PMS system were systematically studied.The results showed that the CoFe_(2)O_(4)@MS/PMS catalytic system had a significant effect on the COD degradation of 6-nitrite wastewater;the COD degradation rate of 6-nitrite wastewater first increased and then decreased with the PMS dosage,and increased with the increase of the catalyst dosage and temperature.The COD degradation of 6-nitrite wastewater had the best effect under strong acid conditions,but the effect was greatly reduced under strongly alkaline conditions.In the actual wastewater treatment,the COD degradation rate of 6-nitrite wastewater within 60 minutes of reaction reached to 99.84%when the PMS dosage was 12 g/L,with catalyst dosage of 0.5 g/L and no adjustment of pH at room temperature(25°C).The experimental results can provide references for the treatment of naphthalenesulfonic acid dye wastewater by activated PMS with heterogeneous transition metal catalyst.

关 键 词：铁酸钴 分子筛 过一硫酸盐 6-硝废水 染料废水 

分 类 号：X703.1[环境科学与工程—环境工程]