Zhang Dan, Xu Hui, Li Xiangli, Zhang Ying, Chen Guanxiong
Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
Ying Yong Sheng Tai Xue Bao. 2003 Dec;14(12):2333-6.
Oxygen-limited autotrophic nitrification and denitrification (OLAND) is a biological nitrogen removal process coupled with partial nitrification and anaerobic ammonium oxidation. In our study, the nitrification was blocked at nitrite stage by controlling the dissolved oxygen concentration at 0.1-0.3 mg.L-1, and then, the denitrification proceeded, with the residual ammonium at the partial nitrification stage as electron donor. As a completely autotrophic nitrification-denitrification process, the OLAND was of many advantages (e.g., low energy consumption, high nitrogen removal rate and small footprint of system), and suitable in particular for treating low COD/NH4(+)-N ratio wastewater. It has become one of the most prosperous and practicable biological nitrogen removal technologies. The recent research of OLAND was reviewed, and its microbial mechanism as well as its applicable prospect was remarked in this paper.
限氧自养硝化反硝化（OLAND）是一种将部分硝化与厌氧氨氧化相结合的生物脱氮工艺。在我们的研究中，通过将溶解氧浓度控制在0.1 - 0.3 mg·L-1，使硝化作用在亚硝酸盐阶段受阻，然后进行反硝化作用，以部分硝化阶段残留的铵作为电子供体。作为一种完全自养的硝化反硝化工艺，OLAND具有许多优点（如低能耗、高脱氮率和系统占地面积小等），尤其适用于处理低COD/NH4(+)-N比的废水。它已成为最具前景和实用性的生物脱氮技术之一。本文综述了OLAND的最新研究进展，并对其微生物机制及其应用前景进行了评述。
