盐分对生物脱氮工艺中硝化反应的影响与机理

高盐废水来源广泛，在利用生物脱氮法处理高盐含氮废水时，盐分会对生物脱氮产生抑制作用.硝化反应是生物脱氮工艺中的关键过程，研究盐分对硝化反应的影响机理具有重要意义.本文概述了盐分对废水生物脱氮过程中硝化反应影响的研究进展，总结了盐胁迫对好氧氨氧化过程、亚硝酸盐氧化过程中硝化效率和反应特性的影响规律，并分析了盐分对硝化微生物细胞形态、生物絮体结构和胞外聚合物特性变化以及菌群结构的影响，系统阐述了盐胁迫下的硝化反应机理，为高盐分高铵氮废水生物脱氮工艺设计提供理论指导.

Impact of salinity on nitrification in the process of biological nitrogen removal and its mechanism: A review.

Wastewater with high salinity is widely distributed, biological nitrogen removal process is inhibited by salt when it is used to treat wastewater containing high concentration of salt and ammonium. Nitrification is the key step of biological nitrogen removal process, thus researching the effect of salinity on nitrification is significant. In this article, the research progress of the impact of salinity on wastewater biological nitrification process was summarized. The influences of salinity stress on various aspects of nitrification process, including the efficiency of ammonia oxidation and nitrite oxidation processes, and the structure of aggregates, the characteristics of flocs and microbial community structure, were analyzed. The mechanism of nitrification process under high salinity was elaborated, providing a theoretical advice for designing biological nitrogen removal system of wastewater with high concentration of salt and ammonium.