【摘要】 光催化氧化是处理含表面活性剂放射性洗涤废水的新途径。本文采用臭氧/纳米二氧化钛光催化的方法,对十二烷基苯磺酸钠（SDBS）进行降解研究,考察了SDBS溶液初始浓度、溶液pH、光照时间、臭氧通入量、反应温度等因素对其降解效果的影响。并添加裂片核素⁹⁰Sr²⁺和¹³⁷Cs⁺,评价本方法对含SDBS的放射性洗涤废水的降解效果。结果表明,采用臭氧/纳米二氧化钛光催化系统对于300mg·L^-1的SDBS溶液进行降解,30分钟SDBS的去除率可达99. 95%,且放射性核素⁹⁰Sr²⁺、¹³⁷Cs⁺的同时存在对O₃/纳米TiO₂光催化降解SDBS的性能几乎不影响; FT-IR测试结果表明不同浓度的SDBS的去除率,皆与反应时间正相关关系。更多还原

【Abstract】 Photocatalytic oxidation is a new approach to deal with radioactive washing waste water containing surfactant.In this paper,the photocatalysis method was used to study the degradation of the sodium dodecyl benzene sulfonate（ SDBS） employing ozone（ O₃） and nano-TiO₂ as catalyzer.Several factors on the degradation effects were studied,which includes initial concentration and pH of SDBS solution,the illumination duration,flux amount of O₃ and temperature. Furthermore,the degradation effects of the method was evaluated in a simulated radioactive wastewater containing nuclides such as⁹⁰Sr+and¹³⁷Cs⁺were added in SDBS.Results shown that the removal rate of SDBS of 300mg·L^-1was highly to 99. 95%after photocatalysis for 30 minutes by using O₃ and nano-TiO₂ photocatalytic system and the radionuclides such as⁹⁰Sr²⁺,¹³⁷Cs⁺has no negative influence on the degradation of SDBS.The FT-IR test results showed that the removal rates of different concentrations of SDBS were positively correlated with the reaction time.更多还原