UV/O3/H2O2协同体系光降解兰纳素橙OR的研究

讨论UV／O3／H2O2协同体系对兰纳素橙OR的光降解情况，与O3、UV、O3／UV的处理效果进行了比较，研究了pH值、O3、H2O2对兰纳素橙OR光降解的影响．结果表明：UV／O3／H2O2协同体系可以很好地降解水中的兰纳素橙OR，其降解速率大于O3／UV、O3、UV体系；在弱碱性的条件下，兰纳素橙OR在这一体系中的光降解速率最快；强酸性条件下，电导率上升最高；兰纳素橙OR光降解速率随O3流量的增加而增加，电导率在O3流量为20L／h时出现峰值；在一定的H2jO2质量浓度范围内，兰纳素橙OR的光降解速率与电导率提高程度随H2O2质量浓度的升高而增大，但过高时，兰纳素橙OR的光降解速率会减慢，电导率提高程度减弱；UV是影响电导率变化的主要因素，其随UV强度的增加而增加。

Study of photodegradation of Lannasol OR by UV/O3/H2O2 combined system

The photodegradation of Lannasol OR in UV/O3/H2O2 combined system is studied, compared with the degradation effect in O3 ,UV and O3/UV. The effects of pH value, O3 and H2O2 on the photodegradation of Lannaso OR are researched. The results show that Lannasol OR is more effectively degraded by UV/O3/H2O2 combined system than by UV, O3 and O3/UV methods; the Lannasol OR displayed faster degrading rate in low alkali medium than in other medium and higher conductance rate in high acid medium; the degrading rate of Lannasol OR increases with increasing concentration of O3, but the conductance rate of Lannasol OR has a maximum when the flux of O3 is 2O L/h; the degrading rate and conductance rate of Lannasol OR increases with increasing concentration of H2O2, but the effect decreases at the high level of H2O2 ; The intensity of UV, which is the primary factor to influence Lannasol OR mineralization, presentes positive effect to conductance of Lannasol OR.