Abstract:

The removal rate of COD and NH₃ - N from municipal wastewater with the combination technologies of advanced oxidation:UV/O₃、UV/TiO₂ and UV/O₃/TiO₂ are compared. The operation parameters of UV/O₃/TiO₂ are optimized.The results show that the technology of UV/O₃/TiO₂ is more efficient for the removal of COD and NH₃ - N. Within 2 h,the removal rate of COD and NH₃ - N can be 90% and 70% respectively. The treated water can be reused in electric power plant.

Key words: municipal wastewater, reuse, advanced oxidation processes

摘要：

通过实验研究比较了UV/O3、UV/TiO2以及UV/O3/TiO2等三种高级氧化技术对城市生活污水中COD和NH3-N的去除效率,重点确定了UV/O3/TiO2法的主要工艺参数。研究结果表明,对于COD、NH3-N质量浓度分别为80～200mg/L和15～25mg/L的城市污水处理厂初沉池出水,用UV/O3/TiO2法处理2h后,COD去除率达到90%,NH3-N去除率达到70%,基本达到了回用于电厂的要求。

关键词: 城市生活污水, 回用, 高级氧化

CLC Number: 

• X703.1