联氨对HABR全程自养脱氮系统的影响  

Effect of Hydrazine on Completely Autotrophic Denitrification System of HABR

作　　者：鲍林林 李晓珍[1,2,3] 李孙林 蔡俊年 金彩霞 BAO Lin-lin;LI Xiao-zhen;LI Sun-lin;CAI Jun-nian;JIN Cai-xia(Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control,School of Environment,Henan Normal University,Xinxiang 453007,China;Henan Key Laboratory for Environmental Pollution Control,Henan Normal University,Xinxiang 453007,China;International Joint Laboratory on Key Techniques in Water Treatment,Henan Normal University,Xinxiang 453007,China;Sino-Pipeline International Company Limited,Shenyang 110031,China)

机构地区：[1]河南师范大学环境学院黄淮水环境与污染防治教育部重点实验室,河南新乡453007 [2]河南师范大学河南省环境污染控制重点实验室,河南新乡453007 [3]河南师范大学河南省水处理关键技术国际联合实验室,河南新乡453007 [4]中油国际管道有限公司,辽宁沈阳110031

出　　处：《中国给水排水》2020年第5期26-32,共7页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2015ZX07204-002);河南省高等学校青年骨干教师培养计划项目(2019GGJS064);河南省科技攻关项目(202102310597)。

摘　　要：为考察联氨作为自养脱氮系统菌群调节剂的可行性,以实验室内运行的HABRCANON反应器为试验装置,研究不同浓度联氨对自养脱氮系统脱氮效能和功能微生物的影响。结果表明,低浓度(1~4 mg/L)联氨可以抑制亚硝酸盐氧化菌(NOB)的活性,促进厌氧氨氧化菌(AnAOB)的活性,从而提高脱氮效能;高浓度(10 mg/L)联氨对好氧氨氧化菌(AOB)和NOB的抑制作用明显;停止投加联氨后,CANON系统的脱氮效能可迅速恢复;高浓度(10 mg/L)联氨对HABR全程自养脱氮工艺的影响是可逆的,但对NOB的抑制不可逆。对生物膜样品中的优势菌种进行分析发现,AOB和AnAOB为主要的功能微生物。采用低-高-低的联氨投加方式,可以有效抑制自养脱氮反应器内NOB的生长,保证自养脱氮系统的稳定运行。In order to investigate the feasibility of hydrazine(N2H4)to be used as a microbial community regulator in the autotrophic denitrification system,the effects of different concentrations of hydrazine on the denitrification efficiency and functional microorganisms of the autotrophic denitrification system in a HABR-CANON reactor were explored.Low concentration of N2H4(1-4 mg/L)could inhibit the activity of nitrite-oxidizing bacteria(NOB)and promote the activity of anaerobic ammonia-oxidizing bacteria(AnAOB),so as to improve the denitrification performance.High concentration of N2H4(10 mg/L)could inhibit the activity of ammonia-oxidizing bacteria(AOB)and NOB obviously,but the denitrification efficiency of the CANON system could be recovered rapidly after stopping the addition of hydrazine.The effect of high concentration hydrazine(10 mg/L)on the completely autotrophic denitrification of HABR was reversible,but the inhibition of NOB was irreversible.The dominant bacteria of the biofilm samples were analyzed and it was found that AOB and AnAOB were the main functional microorganisms.The growth of NOB could be effectively inhibited and the stable operation of autotrophic denitrification system could be guaranteed by using low-high-low N2H4 dosage mode.

关 键 词：全程自养脱氮 联氨 亚硝酸盐氧化菌 厌氧氨氧化菌 好氧氨氧化菌 

分 类 号：TU992[建筑科学—市政工程]