水力空化强化臭氧降解水中苯酚影响因素研究

研究了在水力空化强化臭氧降解苯酚时臭氧通入量、多孔板的参数、多孔板的入口压力对苯酚降解的影响。研究表明:三者对苯酚的降解均有较大影响。增加臭氧通入量、提高入口压力都有利于苯酚的降解。研究水力空化强化臭氧氧化作用的动力学,结果表明,苯酚在单独水力空化、臭氧氧化以及它们的联合工艺下的降解均符合表观一级动力学;且在水力空化强化臭氧氧化的工艺中苯酚的去除率比在单独水力空化、臭氧氧化时有显著的提高,表明水力空化强化臭氧氧化的工艺中存在协同作用。

Influence factors of phenol degradation in water by ozonization with enhancement of hydrodynamic cavitation

Ozonization with enhancement of hydrodynamic cavitation was used in the degradation of phenol,and the influences of ozone flux,parameters of porous plate,inlet pressure of the porous plate on phenol degradation were investigated.The results showed that: the above three factors were all have large effects on the degradation of phenol,and increasing the ozone flux,enhancing the inlet pressure benefited the phenol degradation.The kinetics of phenol degradation in water by ozonization with enhancement of hydrodynamic cavitation was also studied.It was found that,the phenol degradation followed pseudo-first-order kinetic law under individual hydrodynamic cavitation,ozone oxidation or combined process of the two;moreover,comparied with that using the individual process of hydrodynamic cavitation or ozone oxidation,the removal rate of phenol when using the combined process was significantly improved,which indicated the existence of the synergetic effect in technology of ozonization with enhancement of hydrodynamic cavitation.