摘要
通过连续流实验和批式实验研究了有机物和NO_2^--N对厌氧氨氧化菌和反硝化菌耦合脱氮特性的影响.在连续流实验中,保证底物NO_2^--N充足,研究了葡萄糖有机物对厌氧氨氧化颗粒污泥反应器脱氮性能的影响.当进水葡萄糖有机物的COD浓度为100mg/L时,颗粒污泥具有良好的厌氧氨氧化耦合反硝化脱氮活性,当COD浓度为200mg/L时,颗粒污泥的厌氧氨氧化耦合反硝化脱氮活性较差.当进水COD浓度分别为100,200mg/L时,反应器中颗粒污泥的厌氧氨氧化NH_4^+-N去除活性分别为0.096,0.071kg NH_4^+-N/(kg VSS·d),厌氧氨氧化NO_2^--N去除活性分别为0.153,0.092kg NO_2^--N/(kg VSS·d),反硝化NO_2^--N去除活性分别为0.111,0.212kg NO_2^--N/(kg VSS·d).在批式实验中,研究了碳源种类和COD/NO_2^--N比对厌氧氨氧化耦合反硝化颗粒污泥脱氮性能的影响.控制COD/NO_2^--N比为1～4,以葡萄糖为碳源时,厌氧氨氧化菌在亚硝态的竞争过程中占据优势;以乙酸钠为碳源时,控制COD/NO_2^--N比为1～4,厌氧氨氧化菌在亚硝态的竞争过程中处于劣势.
The effect of organic matters and nitrite on the anaerobic ammonium oxidation（anammox）-denitrification coupling process was studied in a continuous flow reactor and batch tests. During the continuous flow experiment, the effect of glucose on the nitrogen removal performance of the anammox granules reactor was investigated with the addition of sufficient nitrite. As a result, the granules performed excellent anammox-denitrification coupling activities with the COD concentration of 100 mg/L. While the COD concentration was improved to 200 mg/L, the granules performed bad anammox-denitrification coupling activities. With the COD concentrations of 100 and 200 mg/L, the corresponding ammonium removal activities of granules through anammox process were 0.096 and 0.071 kg NH4^＋-N/（kg VSS·d）. The nitrite removal activities of granules through anammox process were 0.153 and 0.092 kg NO2^--N/（kg VSS·d）. Meanwhile, the corresponding denitrification activities of the granules were 0.111 and 0.212 kg NO2^--N/（kg VSS·d）. As for the batch tests, the effect of carbon sources and chemical oxygen demand（COD）/NO2^--N ratios on the nitrogen removal performance of the anammox-denitrification coupling granules was analyzed. With the carbon source of glucose and the COD/NO2^--N ranges of 1 to 4, the anammox bacteria performed greater nitrite competitive ability than denitrifiers. However, with the carbon source of sodium acetate and the COD/NO2^--N ranges of 1 to 4, the anammox bacteria performed lower nitrite competitive ability than denitrifiers.
作者
杨京月
郑照明
李军
杜佳
马静
YANG Jing-yue;ZHENG Zhao-ming;LI Jun＊;DU Jia;MA Jing(National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology,Engineering Research Center of Beijing,Beijing University of Technology,Beijing 100124,China)
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2018年第8期2947-2953,共7页
China Environmental Science
基金
国家水体污染控制与治理科技重大专项(2017ZX07103)
北京市自然科学基金资助项目(8172012)
