State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Post Office Box 2871, Beijing 100085, China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Sendai 980-8579, Japan; Tianjin Key Laboratory of Aquatic Science and Technology, 26# Jinjing Road, Tianjin 300384, China.
School of Environmental Science and Engineering, Shandong University, 27# Shanda South Road, Jinan 250100, China.
Bioresour Technol. 2017 Nov;244(Pt 1):463-472. doi: 10.1016/j.biortech.2017.07.156. Epub 2017 Jul 29.
A novel single-stage partial nitritation-anammox process equipped with porous functional suspended carriers was developed at 25°C in a CSTR by controlling dissolved oxygen <0.3mg/L. The nitrogen removal performance was almost unchanged over a nitrogen loading rate ranging from 0.5 to 2.5kgNH-N/m/d with a high nitrogen removal efficiency of 81.1%. The specific activity of AOB and anammox bacteria was of 3.00g-N/g-MLVSS/d (the suspended sludge), 3.56g-N/g-MLVSS/d (the biofilm sludge), respectively. The results of pyrosequencing revealed that Nitrosomonas (5.66%) and Candidatus_Kuenenia (4.95%) were symbiotic in carriers while Nitrosomonas (40.70%) was predominant in the suspended flocs. Besides, two specific types of heterotrophic filamentous bacteria in the suspended flocs (Haliscomenobacter) and the functional carrier biofilm (Longilinea) were shown to confer structural integrity to the aggregates. The novel single-stage partial nitritation-anammox process equipped with functional suspended carriers was shown to have good potential for the nitrogen-rich wastewater treatment.
一种新型的单级部分亚硝化-厌氧氨氧化工艺，在 25°C 下采用控制溶解氧<0.3mg/L 的方式，在 CSTR 中利用多孔功能悬浮载体进行开发。在氮负荷率为 0.5 至 2.5kgNH-N/m/d 的范围内，脱氮性能几乎不变，脱氮效率高达 81.1%。AOB 和厌氧氨氧化菌的比活性分别为 3.00g-N/g-MLVSS/d（悬浮污泥）和 3.56g-N/g-MLVSS/d（生物膜污泥）。焦磷酸测序结果表明，载体中存在共生的硝化菌（5.66%）和卡氏菌（4.95%），而悬浮絮体中主要是硝化菌（40.70%）。此外，悬浮絮体中的两种特定类型的异养丝状菌（海杆菌）和功能载体生物膜中的（长丝菌）被证明为聚集物提供了结构完整性。该新型单级部分亚硝化-厌氧氨氧化工艺配备有功能悬浮载体，具有处理富氮废水的良好潜力。
