Peng Yongzhen, Zhu Guibing
School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, China.
Appl Microbiol Biotechnol. 2006 Nov;73(1):15-26. doi: 10.1007/s00253-006-0534-z. Epub 2006 Oct 7.
Presently, the wastewater treatment practices can be significantly improved through the introduction of new microbial treatment technologies. To meet increasingly stringent discharge standards, new applications and control strategies for the sustainable removal of ammonium from wastewater have to be implemented. Partial nitrification to nitrite was reported to be technically feasible and economically favorable, especially when wastewater with high ammonium concentrations or low C/N ratios is treated. For successful implementation of the technology, the critical point is how to maintain partial nitrification of ammonium to nitrite. Partial nitrification can be obtained by selectively inhibiting nitrite oxidizing bacteria through appropriate regulation of the system's DO concentration, microbial SRT, pH, temperature, substrate concentration and load, operational and aeration pattern, and inhibitor. The review addressed the microbiology, its consequences for their application, the current status regarding application, and the future developments.
目前，通过引入新的微生物处理技术可以显著改善废水处理实践。为了满足日益严格的排放标准，必须实施可持续去除废水中铵的新应用和控制策略。据报道，将氨部分硝化至亚硝酸盐在技术上是可行的，并且在经济上是有利的，特别是在处理高铵浓度或低碳氮比的废水时。为了成功实施该技术，关键在于如何维持氨向亚硝酸盐的部分硝化。通过适当调节系统的溶解氧浓度、微生物污泥龄、pH值、温度、底物浓度和负荷、操作和曝气模式以及抑制剂，可以选择性地抑制亚硝酸盐氧化细菌，从而实现部分硝化。本文综述了其微生物学、应用后果、应用现状以及未来发展。
