Wang Kun, Zhou Chuanting, Zhou Hua, Jiang Ming, Chen Guang, Wang Cong, Zhang Zhenjian, Zhao Xiaodan, Jiang Lu-Man, Zhou Zhen
Shanghai Engineering Research Center of Energy - Saving in Heat Exchange Systems, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China.
Shanghai Urban Construction Design & Research Institute, Shanghai 200125, China.
Bioresour Technol. 2023 Apr;374:128757. doi: 10.1016/j.biortech.2023.128757. Epub 2023 Feb 17.
A comparative study was conducted for the anaerobic/anoxic/aerobic (AAO) process and its two upgrading processes, five-stage Bardenpho and AAO coupling moving bed bioreactors (AAO + MBBR), using long-term operation data of six full-scale wastewater treatment plants. The three processes all had good COD and phosphorus removal performance. The reinforcing effects of carriers on nitrification were moderate at full-scale applications, while the Bardenpho was advantageous in nitrogen removal. The AAO + MBBR and Bardenpho processes both had higher microbial richness and diversity than the AAO. The AAO + MBBR favored bacteria to degrade complex organics (Ottowia and Mycobacterium) and to form biofilms (Novosphingobium), and preferentially enriched denitrifying phosphorus-accumulating bacteria (DPB) (norank_o__Run-SP154) with the highest anoxic to aerobic phosphorus uptake rates of 65.3 % - 83.9 %. The Bardenpho enriched bacteria tolerant to varied environments (Norank_f__Blastocatellaceae, norank_o__Saccharimonadales, and norank_o__SBR103), and was more suitable for the upgrading of the AAO because of its excellent pollutant removal performance and flexible operation mode.
利用六个全尺寸污水处理厂的长期运行数据，对厌氧/缺氧/好氧（AAO）工艺及其两个升级工艺——五阶段巴登福工艺和AAO耦合移动床生物反应器（AAO + MBBR）进行了对比研究。这三种工艺均具有良好的化学需氧量（COD）和磷去除性能。在全尺寸应用中，载体对硝化作用的强化效果适中，而巴登福工艺在脱氮方面具有优势。与AAO工艺相比，AAO + MBBR工艺和巴登福工艺均具有更高的微生物丰富度和多样性。AAO + MBBR工艺有利于细菌降解复杂有机物（奥托维亚菌属和分枝杆菌属）并形成生物膜（新鞘氨醇菌属），并优先富集反硝化聚磷菌（norank_o__Run-SP154），其最高缺氧和好氧磷吸收率为65.3% - 83.9%。巴登福工艺富集了耐不同环境的细菌（Norank_f__Blastocatellaceae、norank_o__Saccharimonadales和norank_o__SBR103），并且由于其出色的污染物去除性能和灵活的运行模式，更适合AAO工艺的升级。
