组合式浮床去除污染物特征及脱氮动力学研究  

Study on pollutants removal performances and denitrification kinetics of integrated floating beds

作　　者：陈华 胡新 吴松 曹文平[2] 张永明 衡强强 CHEN Hua;HU Xin;WU Song;CAO Wenping;ZHANG Yongming;HENG Qiangqiang(Jiangsu Fangzheng Environmental Design Research Co.,Ltd.,Xuzhou 221002,Jiangsu,China;School of Environmental Engineering,Xuzhou Institute of Technology,Xuzhou 221111,Jiangsu,China;Xuzhou Pohu Environmental Protection Technology Development Co.,Ltd.,Xuzhou 221111,Jiangsu,China)

机构地区：[1]江苏方正环保设计研究有限公司,江苏徐州221002 [2]徐州工程学院环境工程学院,江苏徐州221111 [3]徐州鄱湖环保科技发展有限公司,江苏徐州221111

出　　处：《河南理工大学学报（自然科学版）》2020年第4期61-67,共7页Journal of Henan Polytechnic University（Natural Science）

基　　金：江苏省自然科学基金资助项目(BK2011201);徐州工程学院校级科研项目(XKY2018242)。

摘　　要：为了研究低温条件下新型组合式生态浮床脱氮效果和动力学特征,组建两组平行的组合式生态浮床,即玉米芯基质组合式浮床(IFB-CF)和轻质陶粒基质组合式浮床(IFB-LC),研究结果表明:水体交换周期7 d时,IFB-CF对TN,NO–3—N,NH+4—N的降解速率分别为(13.58±0.67),(4.40±0.61),(9.21±0.38)mg/(L·d),IFB-LC对TN,NO3^-—N,NH4^+—N的降解速率分别为(6.41±1.47),(2.15±0.40),(5.95±0.46)mg/(L·d),相对IFB-LC而言,IFB-CF具有更好的TN去除效果;两个组合式生态浮床TN去除动力学过程均符合Monod方程,IFB-LC和IFB-CF的k值分别为35.67和39.23。从指示性微生物看,两个基质内微生物种群差距较大,从而导致两个浮床内产生较大的水质净化差异。To investigate the denitrification effect and kinetics characteristics of a new combined ecological floating bed at low temperature,two groups of parallel combined ecological floating beds were set up,i.e.,cob substrate floating bed(ifb-cf)and lightweight ceramsite substrate integrated floating bed(IFB-LC).The study results showed that when water exchange period lasted 7 days,the degradation rates of total nitrogen(TN),NO3^-—N,and NH4^+—N by IFB-CF were(13.58±0.67)mg/L,(4.40±0.61)mg/L,and(9.21±0.38)mg/L,respectively.The degradation rates of total nitrogen(TN),NO-3—N,and NH+4—N by IFB-LC were(6.41±1.47)mg/(L·d),(2.15±0.40)mg/(L·d),(5.95±0.46)mg/(L·d),respectively.Compared with IFB-LC,IFB-CF had a higher TN removal effect.The kinetic processes of TN removal in the two combined ecological floating beds were in accordance with the Monod equation.The k value of IFB-LC and IFB-CF was 35.67 and 39.23,respectively.From the point of view of indicator microorganisms,there was a large difference between the microbial populations in the two substrates,which led to a large difference in water purification between the two floating beds.

关 键 词：组合式浮床 脱氮 玉米芯基质 轻质陶粒基质指示性微生物 生化动力学 

分 类 号：X52[环境科学与工程—环境工程]