In order to explore the performance, kinetics characteristics and enhancement mechanisms in anammox process under ferrous iron enhanced conditions, a laboratory-scale UASB anammox reactor has been built up and operated for 534 days. Experimental results showed that the Anammox process was successfully started up in a short operation period and the TNRE reached 83.34 ± 2.96% with a maximum total nitrogen removal rate of 14.4 kg m⁻³ d⁻¹ after long-term operated under influent Fe(II) concentration of 5.3 mg L⁻¹. Simulation results using different kinetic models showed that the Stover–Kincannon model and the Grau second-order model were useful for describing the anammox performance under Fe(II) enhanced conditions. Extracellular polymeric substance (EPS) act a pivotal part in the granulation of Anammox sludge and the improvement of anammox activity. Iron improved the hydrophobicity of the sludge by reducing the PN/PS ratios, and also increased the Anammox granular diameter. The granular diameter of higher than 2.00 accounted for 58.3% of the total sludge. At the same time, the presence of iron decreased EPS levels, and also decreased the iron adsorption ability to sludge. More iron was transported into Anammox, which improved the nitrogen removal ability in the Anammox reactor.

为了探索在亚铁强化条件下厌氧氨氧化工艺的性能，动力学特性和增强机理，已建成了实验室规模的UASB厌氧氨氧化反应器并运行了534天。实验结果表明，Anammox工艺在短时间内成功启动，TNRE在进水Fe（II）下长期运行后达到83.34±2.96％，最大总氮去除率为14.4 kg m ^-3 d ^-1）5.3 mg L ^-1的浓度。使用不同动力学模型的仿真结果表明，Stover–Kincannon模型和Grau二级模型对于描述Fe（II）增强条件下的厌氧氨氧化性能非常有用。细胞外聚合物（EPS）在厌氧氨氧化污泥的颗粒化和厌氧氨氧化活性的提高中起着关键作用。铁通过降低PN / PS比改善了污泥的疏水性，还增加了Anammox颗粒直径。大于2.00的颗粒直径占总污泥的58.3％。同时，铁的存在降低了EPS水平，也降低了铁对污泥的吸附能力。更多的铁被输送到A​​nammox中，这提高了Anammox反应器中的氮去除能力。