太阳光催化氧化工艺对藻源含氮有机物的降解研究  

Performance of solar photo-catalytic oxidation process to degrade the nitrogen-containing organics derived from algae cells

作　　者：王杰[1] 刘成[2] 朱浩强[2] 陈卫[1,2] 

机构地区：[1]河海大学环境学院,江苏南京210098 [2]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,江苏南京210098

出　　处：《中国环境科学》2015年第3期792-796,共5页China Environmental Science

基　　金：国家自然科学基金(51378174);国家科技重大专项(2012ZX07403-001);江苏高校优势学科建设工程资助项目

摘　　要：利用小试试验研究了太阳光/TiO2体系对铜绿微囊藻细胞内的溶解性有机氮(DON)的氧化降解过程,考察了氧化降解过程中总可溶性蛋白、多糖、UV254等指标的变化,分析了其作用机理.结果表明,7h处理后,太阳光/TiO2体系对水样中的DON降解率为29%,且降解过程中TN含量基本没有变化,而NH4+和NO3-的浓度明显增加;氧化过程中,总可溶性蛋白和多糖的含量明显减少,去除率达48.6%和54.5%.水样的浑浊度、UV254和DOC也有不同程度的去除.Bench-scale tests were conducted to study the efficiency and mechanisms of the degradation of Dissolved Organic Nitrogen（DON） by solar/TiO2 photo-catalytic. The variations of soluble protein, polysaccharide and UV254 were also investigated to estimate the degradation efficiency. The elimination rate of DON was 29% after 7hours＇ treatment. The concentration of NH4＋ and NO3- was increased significantly while TN had no noticeable change. Additionally, the elimination rates of soluble protein and polysaccharide were 48.6% and 54.5%, respectively. Other water quality indexes like UV254, turbidity and DOC were also decreased moderately in this process.

关 键 词：太阳光催化氧化 负载TIO2 含氮有机物 铜绿微囊藻 

分 类 号：X703.5[环境科学与工程—环境工程]