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用于地表水反硝化的纤维素碳源选择研究

Keywords: 纤维素固体碳源,反硝化,地表水

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Abstract:

为了选取合适的天然有机物作为反硝化细菌碳源用于解决地表水中NO-3-N污染问题,以江南大学校内湖水为接种物,选取8种天然纤维素碳源在缺氧状态不同的处理方式下对60mg/LNO-3-N的降解特性进行研究。结果表明,以碱处理作为预处理可明显提高反硝化速率,碳源脱氮率均在96%以上(树皮除外)。2种处理方式中均有NO-2-N累积,部分碳源释放NO+4-N并发生DNRA反应,树叶在2种处理中脱氮效果均较好。结合各碳源脱氮率、耗碳源量以及处理成本,选取基本处理的香樟叶作为最佳纤维素碳源。

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