Department of Civil Engineering, University of Manitoba, Winnipeg, Canada R3T 5V6.
Environ Technol. 2011 Feb-Mar;32(3-4):289-94. doi: 10.1080/09593330.2010.497500.
Removal of total nitrogen from anaerobically digested sludge reject water by a fully autotrophic process in either one- or two-reactor systems was compared. Autotrophic nitrogen removal is currently most often applied in the one-reactor system primarily in the DEMON configuration. The two-reactor systems had a similar nitrogen removal rate to the one-reactor systems. It was evident that the limiting step was partial nitrification. Increase in partial nitrification can be difficult in a one-reactor system, where the overall conditions, such as the oxygen concentration or substrate concentrations, would progress to full nitrification. The partial nitrification of the two-reactor system may be improved by adjusting key parameters: the un-ionized form of the substrates, the oxygen concentration or the solids residence time. The impact of two process configurations on the operational stability and process performance was presented based on two cases--DEMON and the SHARON-ANAMMOX process.
采用单反应器或双反应器系统，比较了完全自养工艺从厌氧消化污泥废水中去除总氮的效果。目前，自养脱氮最常用于单反应器系统，主要采用 DEMON 构型。双反应器系统的氮去除率与单反应器系统相似。很明显，限制步骤是部分硝化。在单反应器系统中，增加部分硝化可能很困难，因为整体条件（如氧浓度或基质浓度）会进展到完全硝化。通过调整关键参数，可以改善双反应器系统的部分硝化：基质的非离子形式、氧浓度或固体停留时间。根据两种情况（DEMON 和 SHARON-ANAMMOX 工艺）介绍了两种工艺配置对运行稳定性和工艺性能的影响。
