蜂窝填料三相流化床去除城市污水中的总氮特性研究  

Total Nitrogen Removal Performances of Municipal Wastewater by Using Three Phase Fluidized Bed with Honeycomb Biocarries

作　　者：朱守超 吴松 陈华 汪银梅[2] 江成 陈丰照[2] ZHU Shouchao;WU Song;CHEN Hua;WANG Yinmei;JIANG Cheng;CHEN Fengzhao(Jiangsu Fangzheng Environmental Design Research Co.,Ltd.,221002;Xuzhou University of Technology,221111;Jiangsu Lianyanggang Environmental Protection Technology Co.,Ltd.,221111,Xuzhou,China)

机构地区：[1]江苏方正环保设计研究有限公司,221002 [2]徐州工程学院,221111 [3]江苏莲洋港环保科技有限公司,江苏徐州221111

出　　处：《水处理技术》2021年第2期122-125,共4页Technology of Water Treatment

基　　金：江苏省水利厅科技项目(2019059);徐州工程学院校级青年基金科研项目(XKY2018242)。

摘　　要：在好氧条件下,构建了蜂窝填料三相流化床,研究了三相流化床去除城市污水中总氮的效果以及氨态氮、亚硝酸盐和硝态氮转化规律。结果表明,当HRT为3 h时,三相流化床对总氮去除率为52.61%。氨氮去除率为45.71%,进、出水中的亚硝酸盐和硝酸盐氮质量浓度均较低(进水低于1.12 mg/L,出水低于4.52 mg/L)。对剥落的生物膜进行隔离研究,证实了三相流化床内存在明显的硝化和反硝化菌群。蜂窝填料具有独特的结构特征,使蜂窝填料不同孔内生物膜优势群体存在较大差异,系统中存在好氧区和缺氧区。A three phase fluidized bed with honeycomb biocarries was developed,and used for removal total nitrogen(TN),amm ounia nitrogen(NH_(4)^(+)-N),nitrate nitrogen(NO_(3)^(-)-N)and nitrite nitrogen(NO_(2)^(-)-N)from municipal wastewater under an aerobic conditions.The experimental results indicated that the TN and NH_(4)^(+)-N removal rates were 52.61%and 45.71%of the three phase fluidized bed,the influent and effluent NO_(3)^(-)-N and NO_(2)^(-)-N concentration kept a low degree(influent≤1.12 mg/L,effluent≤4.52 mg/L).Two parallel isolation lab-experiments were carried out when the biofilms was peeled from the honeycomb biocarries holes,the results verified that the nitrifying bacteria and denitrifying bacteria co-exist in the different honeycomb biocarries holes.The dominant group of biofilms in the different honeycomb biocarries holes have a significantly different and aerobic zone/oxic zone can coexist due to the honeycomb biocarries structure.

关 键 词：蜂窝填料 三相流化床 城市污水 总氮 脱氮 

分 类 号：X799.3[环境科学与工程—环境工程]