【摘要】 近年来,光催化高级氧化技术在深度水处理中已引起广泛关注。悬浮式光催化反应器作为一种高效光催化反应器,传质效果好、光利用率高,但光催化剂尤其是纳米光催化剂从悬浮液中的分离回收成为光催化高级氧化技术应用的难题。引入无机陶瓷膜分离技术来解决这一难题,设计了工艺流程,搭建了耦合装置并优化了工艺参数。该耦合系统在光催化高级氧化降解甲基橙(降解率达到99.1%以上)后能实现光催化剂的高效分离回收再利用,对光催化剂能达到99%以上的截留率。同时,研究更廉价、阻力降更小的膜材料及新型可见光响应光催化剂成为该技术发展的关键。更多还原

【Abstract】 Photocatalysis advanced oxidation technology has attracted more and more attention in sewage treatment in recent years.Slurry reactor as a high efficient photo catalytic reactor has the advantages of good mass transfer effect and high luminous efficiency.While the separation and recovery of nano-scaled photocatalyst from suspension limited the application of photocatalysis technology.A liquid-solid separation technology using inorganic ceramic membrane as separation membrane was developed to solve this technical bottleneck;the coupling device was designed and the operation parameters were optimized.This coupling device was applied for treatment of methyl orange containing wastewater;it presented perfect treatment efficiency with the methyl orange degradation rate of over 99.1%,the interception rate of photo catalyst could reach over 99%.In the future,developing cheaper membrane materials with small resistance drop and new visible light response photo catalyst was the key of the development of this technology.更多还原