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纳污水体中好氧脱氮菌的筛选与氨氮去除特性

Keywords: 好氧脱氮菌,筛选,氨氮去除,纳污水体

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Abstract:

采用异养硝化培养基从城市纳污水体中富集好氧脱氮菌,将得到的富集菌种分离纯化,得到1株好氧脱氮菌NC1,对氨氮的去除率为72.6%;好氧菌株NC1繁殖较快,生长3~4h即进入对数生长期,有一定实用意义。考察了在不同条件下菌NC1对氨氮的去除效果,发现当pH为6~9之间、转速超过100r/min、温度为30℃、碳氮比为6~12时对氨氮的去除效果较好。NC1在去除氨氮过程中pH值升高,且能在异养条件下利用亚硝酸盐和硝酸盐生长。

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