浮选废水中苯胺黑药与外加基质的共代谢特性  

Co-metabolism characteristics of aniline aerofloat with different substrates in flotation wastewater

作　　者：宋卫锋[1] 严明[1] 孙水裕[1] 

机构地区：[1]广东工业大学环境科学与工程学院,广州510006

出　　处：《中国有色金属学报》2012年第7期2090-2096,共7页The Chinese Journal of Nonferrous Metals

基　　金：广东省重大科技专项资助项目(2010B080703035)

摘　　要：采用自制SBR系统研究不同基质与苯胺黑药的共代谢特性。结果表明:在不同基质种类和比例条件下,SBR系统的好氧反应时间为3 h,反应过程均可基本完成;几种不同共代谢基质促进苯胺黑药降解效率从高到低的顺序为蔗糖、乙酸钠、葡萄糖、淀粉和维生素C;当基质与苯胺黑药的质量比为1:1时,苯胺黑药的降解效率最高;以蔗糖为共代谢基质的出水COD为70 mg/L,去除率达到87.3%,苯胺黑药出水浓度为3.7 mg/L,降解率达到98%;以蔗糖与乙酸钠作为混合基质时,出水COD为84.70 mg/L,COD去除率为84.6%,苯胺黑药浓度为13.55 mg/L,苯胺黑药降解率为93.23%;对胺黑药与蔗糖质量比为1:1时的实验数据进行动力学分析,得到动力学参数米氏常数Km=(1.600 8±0.080)mg/L、vmax=(0.264±0.006)mg/(L.min)。Self-made sequencing batch reactor（SBR） was used to study the co-metabolism characteristics of aniline aerofloat with different substrates.The results show that the aerobic reaction process can be completed in 3 h regardless of substrate sort and the ratio of aniline aerofloat to substrate;the order of promoting degradation from high to low is as follows： sucrose,sodium acetate,glucose,amylum and vitamin C.When the mass ratio of aniline aerofloat to substrate is 1：1,the degradation efficiency of the aniline aerofloat is the highest,the COD in the effluent is 70 mg/L.When co-metabolism substrate is sucrose,the removing rate of COD is 87.3%,the concentration of aniline aerofloat in the effluent is just 3.7 mg/L and the degradation rate reaches 98%.The COD and aniline aerofloat in the effluent is 84.7 mg/L and 13.55 mg/L respectively when sucrose and sodium acetate are mixed as the compound substrate,84.6% of COD is removed,and 93.23% of aniline aerofloat is degraded.The modified Michaelis-Menten equation was used to analyze the data at mass ratio of aniline aerofloat to substrate being 1：1 from the sucrose experiment,and the kinetics parameters are obtained as Km（1.600 8±0.080） mg/L and vmax（0.264±0.006） mg/（L？min）.

关 键 词：苯胺黑药 共代谢 SBR 动力学 

分 类 号：X753[环境科学与工程—环境工程]