Abstract The anaerobic ammonium oxidation (anammox) process is a new and cost-effective green technology for inorganic nitrogen removal in wastewater treatment plants (WWTPs). Red activated sludge granules were found in a swine wastewater treatment system of Guangdong Province using two-stage A/O processes. In order to test the anammox process in the wastewater treatment system, both practical and simulation experiments were conducted, including water quality determination, nitrogen balance, 15N isotope tracing and 16S rRNA sequencing. The results showed that inorganic nitrogen and NH4+-N were removed from the first-stage aerobic tank by 94% and 99.99%, respectively. Anammox granules formed under a DO of 0.19–0.54 mg/L, C/N of 0.60, and COD

中文翻译：

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猪废水处理系统中厌氧氨氧化（anammox）菌的自发形成及机理

摘要 厌氧氨氧化（anammox）工艺是一种新型且经济高效的绿色废水处理厂（WWTPs）去除无机氮技术。在广东省的一个使用两级 A/O 工艺的猪废水处理系统中发现了红色活性污泥颗粒。为了测试废水处理系统中的厌氧氨氧化过程，进行了实际和模拟实验，包括水质测定、氮平衡、15N同位素示踪和16S rRNA测序。结果表明，一级好氧池中无机氮和NH4+-N的去除率分别为94%和99.99%。在 DO 为 0.19–0.54 mg/L、C/N 为 0.60 和 COD 下形成厌氧氨氧化颗粒