均相光敏氧化体系在制革废水除S^(2-)中的应用研究

Study on removing S^(2-)in wastewater with RO photosensitization in homogenous system

提出利用光敏氧化方法处理制革含S2 - 污水的新技术。试验结果发现 ,吖啶橙是一种有效的脱除硫离子的光敏剂。在光敏剂浓度为 2 5 μmol/L ,光照强度为 30 0 0Lx时 ,S2 - 的去除率为 85 .3% ;光照强度为 2 0 0 0Lx时 ,S2 - 的去除率为 72 .1% ,这个过程基本上在 10min内就能够全部完成 ,这比锰盐的催化效果快得多 ;同时也不需要更多的氧气输入。该技术具有光敏剂用量少 ,光敏转化效率高、速度快、能耗少、充分利用太阳光能的优点。

The new method of removing S 2- in leather wastewater with RO photochemical oxidation in homogenous system is studied . The tests show that RO is a better photosensitizer , and when RO is 25μmol/L , the ratioes of removing S 2- are 85.3% in 3 000Lx, 72.1%in 2 000Lx within 10min and no increasing air into water. So this method is better one with many advantages , such as less photo-sensitizer , less energy consume , high ratio , rapidity and full use of sunlight.