催化氧化法处理含硫废水的研究

Study on sulfur-containing waste water treatment by catalytic oxidation

硫化物是煤化工废水常见的污染物之一,现有多种处理方法,其中空气氧化法以成本低、效果较好而备受重视,但存在反应速率慢、硫化氢逸出等缺点。从3种非均相催化剂中选出效果最佳的PT-OC01催化剂,以硫化物的去除率和硫化氢逸出率为指标,设计正交实验,找出最佳的工艺条件。实验结果表明,硫化物去除率可达87.3%,硫化氢逸出率仅为0.25%。

Sulfide is one of the common pollutants produced in coal chemical plants. There are several treatment methods, in which catalytic oxidation method is more often adopted for its low cost and good efficiency. However, this method has the disadvantages of slow reaction and escaping of hydrogen sul- fide. First,select PT-OC01 catalyst as the best catalyst from three kinds of heterogeneous catalysts. Then conduct orthogonal experiment by taking the removing rate of sulfide and escaping rate of hydrogen sulfide as indexes to find out the best process conditions. The experiment shows that sulfur remo- ving rate can reach 87.3% , and hydrogen sulfide escaping rate is 0.25% only.