臭氧催化氧化降解煤焦化高盐废水有机物的试验研究  

Experimental study of ozone catalytic oxidation for degradation of organic matters in coal coking high salinity wastewater

作　　者：代其彬 田莉[1] 韩侯军 崔岩 朱怀亮 乔珍 王吉坤 陈阳 杨芊 DAI Qibin;TIAN Li;HAN Houjun;CUI Yan;ZHU Huailiang;QIAO Zhen;WANG Jikun;CHEN Yang;YANG Qian(Jizhong Energy Fengfeng Group Co.,Ltd.,Handan 056107,China;Hebei Fengmei Coking Co.,Ltd.,Handan 056100,China;China Coal Processing and Utilization Association,Beijing 100013,China)

机构地区：[1]冀中能源峰峰集团有限公司,河北邯郸056107 [2]河北峰煤焦化有限公司,河北邯郸056100 [3]中国煤炭加工利用协会,北京100013

出　　处：《工业用水与废水》2023年第2期29-33,共5页Industrial Water & Wastewater

摘　　要：为实现臭氧催化氧化高效去除煤焦化高盐废水中的有机物,分别采用浸渍法、混合法、喷涂法制备Fe-Al_(2)O_(3)催化剂,开展工艺优化试验以确定最优工艺参数,并对臭氧催化剂开展连续效果评价。结果表明:采用浸渍法制备的Fe-Al_(2)O_(3)催化剂对COD去除率最高,活性组分Fe_(2)O_(3)均匀负载于载体表面,粒径以30~40 nm居多;该催化剂比表面积为231.699 m^(2)/g,孔容为0.414 cm^(3)/g,介孔约占90%。臭氧催化氧化降解煤焦化高盐废水的最佳工艺参数为:催化剂投加量800 mg/L,臭氧质量浓度200 mg/L,臭氧通气量1.5 L/min,在此条件下连续运行100 h,COD的去除率稳定在51%~54%,该Fe-Al_(2)O_(3)催化剂具有良好的催化稳定性。In order to realize efficient removal of organic matters from coal coking high salinity wastewater by ozone catalytic oxidation,Fe-Al_(2)O_(3) catalysts prepared by impregnation method,mixing method,spraying method respectively were adopted,the optimal technological parameters were determined through process optimization experiment,and the continuous stability of those catalysts was evaluated.The results showed that,the Fe-Al_(2)O_(3) catalyst prepared by impregnation method had the highest removal efficiency on COD,and the active component Fe_(2)O_(3) was uniformly loaded on the surface of the carrier,with the particle size of 30~40 nm in the majority;the specific surface area was 231.699 m^(2)/g,the pore volume was 0.414 cm^(3)/g,the mesopore accounts for about 90%.The optimal technological parameters for ozone catalytic oxidation degrading coal coking high salinity wastewater were as follows:the catalyst dosage was 800 mg/L,the mass concentration of ozone was 200 mg/L,and the ozone aeration amount was 1.5 L/min.After a 100-h continuous operation under the above condition,the removal rate of COD was stable at 51%-54%,which showed that the said Fe-Al_(2)O_(3) catalyst had good catalytic stability.

关 键 词：煤焦化 高盐废水 有机物 浸渍法 物性表征 

分 类 号：X703.1[环境科学与工程—环境工程]