沸石生物膜法处理玉米青贮渗出液应用研究  

APPLICATION RESEARCH ON TREATMENT OF CORN SILAGE EFFLUENT USING BIO-ZEOLITE SYSTEM

作　　者：邹海明[1] 严家平[2] 汪建飞[1] 于群英[1] 李孝良[1] 李永刚 

机构地区：[1]安徽科技学院资环系,安徽凤阳233100 [2]安徽理工大学,安徽淮南232001 [3]安徽凤阳奶牛养殖场,安徽凤阳233100

出　　处：《水处理技术》2011年第4期112-114,126,共4页Technology of Water Treatment

基　　金：安徽省教育厅自然科学研究项目(KJ2010B292)

摘　　要：采用沸石生物膜法处理安徽凤阳奶牛养殖场玉米青贮渗出液,研究了对COD、氨氮的去除效果。结果表明:挂膜成熟后,沸石生物膜反应器对COD和氨氮有较好的去除效果;挂膜23 d后,COD的去除率可以稳定在70%,氨氮去除率可以稳定在80%以上;当气水体积比为2:1,水力停留时间为12 h,生物膜活性达到最高,有机污染物的去除效果最好;有机负荷对氨氮去除效果影响较大,当COD达到280 mg·L-1时,氨氮的去除率降为32.7%,显示出有机污染物的降解好氧严重抑制了硝化细菌的生长。In corn silage effluent, COD and NH4^＋-N are in high concentration, which has caused seriously pollution in some areas. Bio-zeolite system, removal of COD and NH4＋-N, was selected to treat the corn silage effluent in dairy farm of FENGYANG. The following results were obtained： it was ob- vious and stable for the removal of COD and NH4^＋-N by bio-zeolite system after the biofilm maturation; after 23th day, the removal efficiency of COD and NH4^＋-N was over 70% and 80%. When the gas to liquid ratio was 2：1, hydraulic retention time was 12 h, the biofilm had the best of activation and the highest removal rate of organic pollutant. The removal of NH4^＋-N was limited by organic load and the decrease of DO concentration, organic degradation, severely inhibited the growth of nitrifying bacteria, which the removal rate of NH4^＋-N decreased to 32.7% when the concentration of COD increased to 280 mg·L^-1

关 键 词：玉米青贮 沸石 生物膜 渗出液 

分 类 号：X703[环境科学与工程—环境工程]