高压脉冲介质阻挡放电协同臭氧溶气降解聚丙烯酰胺模拟废水

利用高压脉冲介质阻挡放电与臭氧联用的上流式反应器,考察了高压脉冲介质阻挡放电、臭氧和二者协同处理聚丙烯酰胺的降解情况以及COD和BOD5/COD的变化趋势;另外研究了反应器内加入TiO2催化剂对处理效果的影响,并探讨了其作用机理。结果表明,停留时间为10min时,放电协同臭氧溶气对聚丙烯酰胺的降解率可达51%,比单独放电和单独臭氧分别提高了27%和4%。加入TiO2催化剂后,COD去除率达到65%,BOD5/COD提高到0.37。

Experimental study on degradation of simulated wastewater with polyacrylamide by combination of high voltage pulsed dielectric barrier discharge and ozone immision

An up-flow reactor integrated technology of high voltage pulsed dielectric barrier discharge and ozone immision was used to investigate the synergetic action of high voltage pulsed discharge plus ozone immision in degradation of HPAM and the change of COD and BOD5/COD. The factors affecting the degradation rate of HPAM by adding TiO2 were studied,and the mechanism was analyzed. The degradation rate of HPAM by the combination of high voltage pulsed dielectric barrier discharge and ozone immision was 51% after 10 minutes treatment,increased by 27% and 4% than discharge only and ozone immision only respectively .By adding TiO2,COD removal was over 65%,BOD5/COD increased to 0.37.