基于生物膜反应器的作物青贮液处理研究 |
作者:邹海明1,汪建飞1,周毅1,李飞跃1,李永刚2 |
单位: 1安徽科技学院资环系,凤阳 233100;2 安徽凤阳奶牛养殖场,凤阳 233100 |
关键词: 沸石;生物膜反应器;玉米青贮;渗出液;废水处理 |
DOI号: |
分类号: |
出版年,卷(期):页码: 2011,31(6):69-72 |
摘要: |
作物青贮渗出液属于高CODcr、高氨氮废水,对水环境质量影响不容忽视。本文采用沸石生物膜的方法处理奶牛养殖场玉米青贮渗出液,研究了对CODcr、氨氮的去除效果。结果表明,挂膜23d后,CODcr的去除率可以稳定在70%,氨氮去除率可以稳定在80%以上,挂膜成熟后沸石生物膜反应器对CODcr和氨氮有较好的去除效果;当气水比为2:1,水力停留时间为12h,生物膜活性达到最高,有机污染物的去除效果最好;当CODcr的质量浓度达到280mg/L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,有机负荷对氨氮去除效果影响较大。 |
In plant silage effluent, CODcr and NH4+-N are in high concentration, which has caused seriously pollution in some areas. Bio-zeolite system, removal of CODcr and NH4+-N, was selected to treat the corn silage effluent in dairy farm. The following results were obtained: beginning the biofilm,after 23th day, the removal efficiency of CODcr and NH4+-N was over 70% and 80%,which reveals the stable for the removal of CODcr and NH4+-N by bio-zeolite system after the biofilm maturation. When the gas to liquid ratio was 2:1, hydraulic retention time was 12h, the biofilm has the best of activation and the highest removal rate of organic pollutant. The removal rate of NH4+-N decreased to 32.7% when the concentration of CODcr increased to 280mg/L.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. |
基金项目: |
国家星火计划项目(2008GA710029);安徽省教育厅自然科学研究项目(KJ2010B292) |
作者简介: |
邹海明(1977-),男(汉族),安徽巢湖人,讲师,硕士,主要从事水处理方面教学和研究。E-mail:hmzou@126.com |
参考文献: |
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