摘要： 以一种天然高硅轻质多孔沸石为载体，采用浸渍法对其进行金属改性，并以盐酸四环素（TCH）为目标污染物，考察了改性催化剂催化臭氧氧化降解TCH的能力及矿化效果。结果表明，当浸渍液Fe（NO₃）₃的浓度为0.05 mol/L，臭氧质量浓度为1 mg/L，催化剂投加量为2 g/L，TCH初始质量浓度为50 mg/L，氧化时间为30 min时，TCH去除率为94.35%，矿化率为58.42%。改性催化剂重复使用6次的TCH去除率均高于86.5%，Fe³⁺溶出质量浓度仅为0.088 mg/L。

关键词: 臭氧催化氧化, 盐酸四环素, 改性, 沸石

Abstract: Metal modified catalytic ozonation catalyst has been prepared by an immersion method,using a kind of natural zeolite,which contains high silicon and has light texture and porous structure,as carriers. The catalytic ozonation degradation capability for TCH and mineralization effect of the modified catalyst have been investigated by taking tetracycline hydrochloride(TCH) as the target pollutant. The results show that when the concentration of the steeping liquid Fe(NO₃)₃ is 0.05 mol/L,mass concentration of ozone 1 mg/L,catalyst dosage 2 g/L,initial mass concentration of tetracycline hydrochloride 50 mg/L,and oxidation time 30 min,the degradation rate of TCH is 94.35% and mineralization rate 58.42%. After the modified catalyst has repeatedly been used 6 times,all the TCH removing rates are higher than 86.5%,and the dissolved mass concentration of Fe³⁺ is only 0.088 mg/L.

Key words: catalytic ozonation, tetracycline hydrochloride, modification, zeolite

中图分类号: 

• X52

• X703.1