HCO_3^-浓度对厌氧氨氧化反应的影响  

Effects of HCO_3^- concentration on ANAMMOX reaction

作　　者：丁敏[1] 黄勇[1,2] 袁怡 

机构地区：[1]苏州科技学院环境科学与工程学院,江苏苏州215009 [2]苏州科技学院环境生物技术研究所,江苏苏州215009

出　　处：《工业水处理》2015年第10期35-38,共4页Industrial Water Treatment

基　　金：国家自然科学基金项目(51008202);江苏省环保厅重大项目(201104);江苏省2012年度普通高校研究生科研创新计划项目(CXZZ12_0858)

摘　　要：接种稳定运行的UASB厌氧氨氧化反应器污泥至厌氧发酵罐进行批式实验,研究了进水HCO_3^-浓度对厌氧氨氧化反应的影响。结果表明,当进水HCO_3^-质量浓度<0.8 g/L时,发酵罐出水pH迅速大幅度升高,抑制了厌氧氨氧化细菌活性,氮去除速率大幅下降;随着进水HCO_3^-质量浓度从0.8 g/L增加到1.2 g/L,厌氧氨氧化细菌的活性增加;进一步提高HCO_3^-浓度,氮去除速率下降,厌氧氨氧化细菌的活性又受到抑制。HCO_3^-对厌氧氨氧化反应的影响表现为提供充足碳源和调节反应器p H的综合作用。Batch experiments on the inoculation of the sludge in UASB ANAMMOX reactor that runs steadily to the fermentation tank have been conducted. The influences of influent HCO3-concentration on ANAMMOX reaction are investigated. The results show that when the mass concentration of influent HCO3-is less than 0.8 g/L,the effluent pH of the fermentation tank rise quickly to a great extent ,inhibiting the bacterial activity of anaerobic ammonia oxi-dation,and making the nitrogen removing rate drop to a great extent. With the increase of the influent HCO3-mass concentration from 0.8 g/L to 1.2 g/L ,the activity of anaerobic ammonia oxidation bacteria increases. When the con-centration of HCO3-is raised further,the nitrogen removing rate decreases,and the activity of anaerobic ammonia oxidation bacteria is inhibited,again. It is concluded that the influences of HCO3-on the ANAMMOX reaction are to supply sufficient carbon source and regulate the reactor pH.

关 键 词：厌氧氨氧化 HCO3-浓度 PH 氮去除速率 

分 类 号：X703[环境科学与工程—环境工程]