周期与连续高盐胁迫下硝化菌群活性恢复研究  

Recoverability of nitrifying bacteria activity under cyclical and continuous high salinity stress in waste water

作　　者：向兴 朱晓华 杨娟[1] 吴婷 孟丹 刘泉艺 陈茂霞[1] XIANG Xing;ZHU Xiao-hua;YANG Juan;WU Ting;MENG Dan;LIU Quan-yi;CHEN Mao-xia(College of Chemistry,Leshan Normal University,Leshan ,Sichuan ,614000,China;College of Environment Science and Engineering,China West Normal University, Nanchong ,Sichuan 637009,China)

机构地区：[1]乐山师范学院化学学院,四川乐山614000 [2]西华师范大学环境科学与工程学院,四川南充637009

出　　处：《污染防治技术》2018年第6期25-29,共5页Pollution Control Technology

基　　金：2017年国家级创新创业训练项目(No.201710649061);乐山师范学院引进人才科研启动项目(No.Z1519)

摘　　要：为了考察了高盐胁迫方式对硝化菌群活性恢复的影响,该研究以20 g/L Na Cl提供高盐环境,对上述硝化菌群进行了为期26 d的两种胁迫(周期胁迫、连续胁迫)。结果表明,周期胁迫下氨氧化能力较连续胁迫恢复更快,其在第7 d时的氨氮去除速率为8. 07 mg/L·h,恢复到无胁迫的59%;此时,连续胁迫下的氨氮去除速率仅为2. 30 mg/L·h,为无胁迫的17%。氨氧化菌的活性在上述高盐胁迫方式下均可恢复,但亚硝酸盐氧化菌恢复较为困难,这导致出现严重亚硝酸盐积累。In order to investigate the effect of high salt stress on the recovery of nitrifying bacteria activity,this study provided a high salt environment with 20 g/L NaCl,and carried out two stresses(cycle stress,continuous stress)for the above -mentioned nitrifying bacteria group for 26days.The results showed that the ammonia oxidation ability recovered faster than the continuous stress under cyclic stress,and the ammonia nitrogen removal rate at the 7 th day was 8.07 mg/L·h,which was restored to 59% without stress.At this time,the removal rate of ammonia nitrogen under continuous stress was only 2.30 mg/L·h,which was 17% without stress.The activity of ammonia oxidizing bacteria can be restored under the above high salt stress mode,but the recovery of nitrite oxidizing bacteria is difficult,which leads to the occurrence of severe nitrite accumulation.

关 键 词：高盐 硝化作用 周期胁迫 连续胁迫 恢复性 

分 类 号：X172[环境科学与工程—环境科学]