污泥陶粒催化剂催化臭氧氧化头孢曲松钠

Catalytic Ozonation of Ceftriaxone Sodium over Sludge Ceramsite Catalyst

以污泥作为主要材料,以污泥焚烧灰渣和粘土作为辅料制备污泥陶粒催化剂。考察了HCO3-及水质背景对污泥陶粒催化剂(SCC)催化臭氧氧化头孢曲松钠(CRO)的效能影响因素进行研究。结果表明,当臭氧投加量为0.95 mg/min,SCC投加比例(催化剂与废水的体积比)为1︰1,反应温度为20℃,CRO浓度为100 mg/L时,HCO3-对催化臭氧氧化抑制作用明显,而且这种抑制作用随着HCO3-浓度增大而表现得更加显著;并且随着溶液水质的复杂化,催化剂的催化效果出现显著下降。

Sludge catalyst was prepared with sludge as main material and sludge incineration ash and clay as auxiliary materials. The influence factors of HCO3-and water quality background on the catalytic performance of sludge ceramsite catalyst(SCC) for ozonation of ceftriaxone sodium(CRO) were investigated. The results showed that when ozone dosage was 0.95 mg/min, SCC dosage ratio(volume ratio of catalyst to wastewater) was 1︰1, reaction temperature was 20 ℃, and the concentration of Cr O was 100 mg/L, the inhibition effect of HCO3-on catalytic ozonation was obvious, and the inhibition effect was more significant with the increase of HCO3-concentration. And with the complexity of the water quality of the solution, the catalytic effect of the catalyst decreased significantly.