厌氧氨氧化菌
氨
化学
亚硝酸盐
核化学
氮气
相(物质)
反硝化
生物化学
反硝化细菌
硝酸盐
有机化学
作者
Pooja Mishra,Isha Burman,Alok Sinha
标识
DOI:10.1080/09593330.2020.1746408
摘要
This study was conducted to evaluate the performance of anammox reaction on the addition of iron. Iron was added in the form of FeSO4 starting with 2 mg/L (phase I), 5 mg/L (phase II), 8 mg/L (phase III), 10 mg/L (phase IV), 30 mg/L (phase V) and 50 mg/L (phase VI) on the addition of Fe (II) in anammox reactor. The efficiency of ammonia removal increased up to 90% with 5 mg/L of Fe (II) addition as compared to 77% when no Fe (II) was added. As the iron dosing was increased from 10 to 30 mg/L, ammonia removal declined sharply, which recovered slowly at steady-state condition. However, on the addition of 30 and 50 mg/L of Fe (II), the efficiency declined to 55% and 44%, respectively and did not recover. At 5 mg/L Fe (II) the nitrite removal was nearly 80% which declined to 44% at 50 mg/L. This was attributed to low pH values which hindered anammox activity. The mass balance study of nitrogen in the anammox process revealed that gas production was highest at 5 mg/L of Fe (II) conforming that 5 mg/L of Fe (II) is the optimum dose of iron for enhancing anammox reaction.
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