A salt-tolerant denitrifying bacterium F1 was isolated in this study, which has high nitrite (NO₂⁻–N) and nitrate (NO₃⁻–N) removal abilities. The salt tolerance capacity of strain F1 was further verified and the effects of initial pH, initial NaNO₂ concentration and inoculation size on the denitrification capacity of strain F1 under saline conditions were evaluated. Strain F1 was identified as Pannonibacter phragmitetus and named Pannonibacter phragmitetus F1. This strain can tolerate NaCl concentrations up to 70 g/L, and its most efficient denitrification capacity was observed at NaCl concentrations of 0–10 g/L. Under non-saline condition, the removal percentages of NO₂⁻–N and NO₃⁻–N by strain Pannonibacter phragmitetus F1 at pH of 10 and inoculation size of 5% were 100% and 83%, respectively, after cultivation for 5 days. Gas generation was observed during the cultivation, indicating that an efficient denitrification performance was achieved. When pH was 10 and the inoculation size was 5%, both the highest removal percentages of NO₂⁻–N (99%) and NO₃⁻–N (95%) by strain Pannonibacter phragmitetus F1 were observed at NaCl concentration of 10 g/L. When the NaCl concentration was 10 g/L, strain Pannonibacter phragmitetus F1 can adapt to a wide range of neutral and alkaline environments (pH of 7–10) and is highly tolerant of NaNO₂ concentration (0.4–1.6 g/L). In conclusion, strain Pannonibacter phragmitetus F1 has a great potential to be applied in the treatment of saline wastewater containing high nitrogen concentrations, e.g. coastal aquaculture wastewater.

中文翻译：

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耐盐反硝化细菌Phannonibacter phragmitetus F1的鉴定和反硝化特性。

本研究分离了耐盐性反硝化细菌F1，它具有较高的亚硝酸盐（NO ₂ ^-- N）和硝酸盐（NO ₃ ^-- N）去除能力。进一步验证了菌株F1的耐盐能力，并评估了初始pH，初始NaNO ₂浓度和接种量对菌株F1在盐水条件下反硝化能力的影响。菌株F1被鉴定为芦苇泛细菌，并被命名为芦苇泛细菌F1。该菌株可以耐受最高70 g / L的NaCl浓度，并且在0-10 g / L的NaCl浓度下观察到其最有效的反硝化能力。在非盐条件下，NO的去除率培养5天后，在pH为10和接种量为5％的条件下，由芦苇泛细菌F1产生的₂ ^-- N和NO ₃ ^-- N分别为100％和83％。在培养过程中观察到气体产生，表明实现了有效的反硝化性能。当pH为10且接种量为5％时，在NaCl浓度为10 g的条件下，由Pannonibacter phragmitetus F1菌株观察到的最高NO ₂ ^-- N（99％）和NO ₃ ^-- N（95％）去除率都最高。/升 当NaCl浓度为10 g / L时，潘氏泛细菌菌株F1可以适应各种中性和碱性环境（pH为7-10），并且对NaNO ₂浓度（0.4-1.6 g / L）具有高度的耐受性。总之，菌株Pannonibacter phragmitetus F1具有很大的潜力，可用于处理含氮量高的盐水，例如沿海水产养殖废水。