论文部分内容阅读
研究了用催化湿式空气氧化技术处理高含量、难降解的磷霉素钠和黄连素制药混合废水,考察了非贵金属Mn及稀土元素Ce协同Cu催化反应时CWAO处理效率。结果表明,以黄连素废水中的Cu2+作催化剂,反应温度为250℃、初始氧分压为1.3 MPa、反应停留时间0.5 h的条件下,COD平均去除率可达50%,此时废水中有机磷转化为PO43-;Mn、Ce的加入可使COD的去除率提高12%～18%,其中Mn与Cu协同作用效率最高,在初始氧分压为1.3 MPa下,COD去除率可提高至72%,99%以上的有机磷转化为PO43-,出水BOD5/COD提高至0.85,达到了CWAO预处理即提高2种制药废水可生化性的目的。
The catalytic wet air oxidation technology was used to treat high concentration and refractory sodium fosfomycin and berberine mixed pharmaceutical wastewater. The efficiency of CWAO in the Cu catalyzed reaction of non-precious metal Mn and rare earth element Ce was investigated. The results showed that under the condition of reaction temperature of 250 ℃, initial oxygen partial pressure of 1.3 MPa and reaction residence time of 0.5 h, the average removal rate of COD was up to 50% when Cu2 + in berberine wastewater was used as catalyst. At this time, Phosphorus is converted to PO43-. Adding Mn and Ce can increase the COD removal efficiency by 12% ~ 18%, and the synergistic effect between Mn and Cu is the highest. At the initial oxygen partial pressure of 1.3 MPa, the COD removal rate can be increased to 72 %, More than 99% of the organic phosphorus was converted to PO43-, and the effluent BOD5 / COD was increased to 0.85, reaching the goal of CWAO pretreatment to improve the biodegradability of the two kinds of pharmaceutical wastewater.