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OALib Journal期刊
ISSN: 2333-9721
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不同碳源对陶环滤料生物挂膜及同步硝化反硝化效果的影响
DOI: 10.3724/SP.J.1145.2013.00495, PP. 495-500
Keywords: 生物挂膜,有机碳源,碳氮比,硝化反硝化,循环水系统
Abstract:
为探讨碳源及不同碳氮比对生物滤器挂膜及硝化反硝化效果的影响，选择3种生物膜培养常用的有机物质――葡萄糖、蛋白胨和乙酸钠作为外加碳源，并采用微生态净水剂作为挂膜菌种，在初始总氨氮浓度为10mg/l的条件下对陶环滤料进行生物膜培养实验，直至反硝化系统完全建立，并探究挂膜成熟的3组生物滤器在3种碳源及4种碳氮比条件下的同步硝化反硝化效果.结果显示：采用葡萄糖、蛋白胨和乙酸钠作为有机碳源生物膜，成熟时间分别为31d、40d和28d；在初始总氨氮浓度为5mg/l的条件下，碳氮比为4:1时滤器去除溶解态无机氮的效果最佳，3组滤器在48h时的tn去除率均达到85%以上，碳氮比过高或过低时均显著影响滤器的硝化反硝化性能；添加乙酸钠在相同情况下具有最好的生物脱氮效果.
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