碳源类型对好氧流化床生物膜反应器内污水脱氮机理的影响  

Effect of Carbon Source Type on the Mechanism of Nitrogen Removal in the Aerobic Fluidized Bed Biofilm Reactor

作　　者：焦梦 王倩[1] 刘晶晶[1] 孙小沛[1] 任杰辉 程文[2] JIAO Meng;WANG Qian;LIU Jingjing;SUN Xiaopei;REN Jiehui;CHENG Wen(Powerchina Northwest Engineering Corporation Limited,Xi'an,710065,China;Xi'an University of Technology,Department of Municipal and Environmental Engineering,Xi'an,710048,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,陕西西安710065 [2]西安理工大学,市政与环境工程系,陕西西安710048

出　　处：《水处理技术》2024年第9期129-133,共5页Technology of Water Treatment

基　　金：国家自然科学基金青年科学基金项目(52206210);中国博士后科学基金资助项目(2022MD723838)。

摘　　要：探索乙酸钠、丙酸钠、葡萄糖和淀粉四种碳源条件下好氧流化床生物膜反应器(Aerobic fluidized bed biofilm reactor,AFBBR)内含氮污染物处理机制,并分析含氮污染物的时间沿程变化规律,揭示AFBBR系统内污水的脱氮机理。结果表明:丙酸钠碳源条件改善了AFBBR系统内污水处理效能,COD、NH_(4)^(+)-N、TN和TP的平均去除率分别可达93.1%、86.9%、81.3%和57.2%;以淀粉为碳源条件AFBBR系统的同步硝化反硝化(SND)明显高于其他条件,而乙酸钠和丙酸钠显著增加了AFBBR系统内硝化速率(NR)和反硝化速率(DNR);时间沿程NH_(4)^(+)-N和TN的降解速率从高到低依次为丙酸钠>淀粉>葡萄糖>乙酸钠,最大降解速率分别可达3.3 mg/(L·h)和3.0 mg/(L·h)。The treatment mechanism of nitrogen under the four carbon source types(sodium acetate,sodium propionate,glucose and starch)was explored in the aerobic fluidized bed biofilm reactor(AFBBR).The temporal variation pattern of nitrogen was analyzed.The denitrification mechanism of wastewater in the AFBBR system was revealed.The results indicated that sodium propionate improved the wastewater treatment efficiency in the AFBBR system.In this condition,the average removal of COD,NH_(4)^(+)-N,TN,and TP reached 93.1%,86.9%,81.3%,and 57.2%,respectively.The simultaneous nitrification-denitrification(SND)of the AFBBR system under the carbon source of starch was significantly higher than other carbon sources,while sodium acetate and sodium propionate significantly increased the nitrification rate(NR)and denitrification rate(DNR)in the AFBBR system.The degradation rate of NH_(4)^(+)-N and TN along the time from high to low was sodium propionate>starch>glucose>sodium acetate.The maximum degradation rates respectively reached 3.3 mg/(L·h)and 3.0 mg/(L·h).

关 键 词：碳源类型 氮 好氧生物处理 污水 生物膜 

分 类 号：X703.1[环境科学与工程—环境工程]