环境工程学报2011，Vol.5Issue(9)：2108-2114,7.
低剂量臭氧的直接通加对活性污泥的活性、微生物种群及污泥减量化的影响
Effects of direct injection of low-dose ozone on biological activity,microbial population and sludge reduction in a batch activated sludge reactor
摘要
Abstract
Two batch simulated activated sludge reactors with a volume of 1.1 L were constructed and operated by fill and draw mode using synthetic wastewater.Reactor 1 was run by direct injection of low doze ozone（0.01 g O3/g TSS） into the aeration tank once a day,while reactor 2 was used as the control without injection of ozone.After 71 d operation,the COD removal efficiency of the two reactors was nearly the same.But MLSS（mixed liquor suspended solids） remained stable at about 8 200 mg/L in reactor 1 after 40 d operation,which was lower than that of the control reactor by 1 400~1 700 mg/L,indicating that the sludge reduction was realized by direct ozone injection in reactor 1.The direct injection of the low dose ozone also decreased both the intracellular ATP concentration and antioxidant ability of the microorganisms in reactor 1（the average activities of SOD and catalase in reactor 2 were higher than those in reactor 1 by 24.3% and 9.5%,respectively）.The results of PCR-DGGE fingerprints indicated that Uncultured gammaproteobacteria bacterium,Nannocystis exedens and Uncultured actinobacterium were the dominant bacteria in reactor 1,whereas Uncultured bacterium and Uncultured gammaproteobacteria bacterium were the dominant bacteria in reactor 2.关键词
微生物活性/低剂量臭氧/污泥减量化/微生物种群Key words
biological activity/low-ozone dose/sludge reduction/microbial population分类
资源环境引用本文复制引用
王瑞民,闫桑田,冯权,初里冰,杨清香,邢新会,孙旭林,本杰明..低剂量臭氧的直接通加对活性污泥的活性、微生物种群及污泥减量化的影响[J].环境工程学报,2011,5(9):2108-2114,7.基金项目
国家“863”高技术研究发展计划项目 （）
教育部博士点基金 （）
