硝化菌的筛

发布时间：2018-05-10 23:13

  本文选题：氨氮 + 硝化菌　； 参考：《环境污染与防治》2016年11期

【摘要】：为探讨氨氮微污染地表水的生物强化脱氮技术,从地表水中筛选分离得到一种硝化菌优势菌株,对其进行16SrDNA鉴定,考察了不同固定化方法条件下其对氨氮处理的效果。结果表明,从氨氮微污染地表水中筛选分离的硝化菌优势菌株为芽孢杆菌属(Bacillus sp.),采用聚乙烯醇(PVA)材料能够有效实现硝化菌株的固定化。PVA固定化硝化菌颗粒对微污染地表水中氨氮的去除率达87.2%,处理后水中残余氨氮浓度低于《地表水环境质量标准》(GB 3838—2002)Ⅱ类水体氨氮限值。
[Abstract]:In order to study the biological enhanced denitrification technology of surface water polluted by ammonia nitrogen, a dominant strain of nitrifying bacteria was isolated from surface water and identified by 16SrDNA. The effect of different immobilization methods on ammonia nitrogen treatment was investigated. The results show that The dominant strain of nitrifying bacteria isolated from surface water contaminated with ammonia nitrogen is Bacillus sp. The use of polyvinyl alcohol (PVA) material can effectively realize the immobilization of nitrifying bacteria strain. PVA immobilized nitrifying bacteria particles in micro-polluted surface water. The removal rate of ammonia nitrogen reached 87.2%, and the residual ammonia nitrogen concentration in the treated water was lower than the limit value of ammonia nitrogen in class 鈪，

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