The Silesian University of Technology, Environmental Biotechnology Department, Akademicka 2, 44-100, Gliwice, Poland.
The Silesian University of Technology, Environmental Biotechnology Department, Akademicka 2, 44-100, Gliwice, Poland.
Chemosphere. 2017 Sep;182:203-214. doi: 10.1016/j.chemosphere.2017.05.003. Epub 2017 May 2.
The anammox (anaerobic ammonium oxidation) process was considered a very efficient and economic wastewater treatment technology immediately after its discovery in 1995, thus research in this field was intensified. The anammox process is characterised by a high temperature optimum and is very sensitive to both temperature and pH fluctuations. The process can also be inhibited by many factors, including by its substrates, i.e. nitrite and ammonium (or its unionised forms: free ammonia and free nitrous acid). This paper presents a comprehensive study of the most important and recent findings on the influence of two parameters that are crucial in wastewater treatment, i.e. temperature and pH. Because both parameters may influence the anammox process simultaneously, a meta-analysis was conducted of the data from the literature. Although meta-analysis is commonly used in medical research, mathematical analysis of the literature data has become an interesting and important step in the environmental sciences. This paper presents information on the influence of both temperature and pH on process efficiency and microbial composition. Additionally, the responses of different operating systems on both temperature and pH changes are described. Moreover, the role of both adaptation to changed conditions and of pH control as well as indicated areas of process operation are discussed.
自 1995 年发现厌氧氨氧化（anaerobic ammonium oxidation）过程以来，该过程被认为是一种非常高效和经济的废水处理技术，因此该领域的研究得到了加强。厌氧氨氧化过程的特点是最佳温度高，对温度和 pH 值波动非常敏感。该过程还会受到许多因素的抑制，包括其底物，即亚硝酸盐和铵（或其游离形式：游离氨和游离亚硝酸）。本文对废水处理中两个关键参数（温度和 pH 值）的最重要和最新发现进行了全面研究。由于这两个参数可能同时影响厌氧氨氧化过程，因此对文献中的数据进行了荟萃分析。虽然荟萃分析在医学研究中很常用，但对文献数据进行数学分析已成为环境科学中一个有趣且重要的步骤。本文介绍了温度和 pH 值对工艺效率和微生物组成的影响。此外，还描述了不同运行系统对温度和 pH 值变化的响应。此外，还讨论了适应变化条件和 pH 值控制的作用以及工艺运行的指示区域。
