污水生物处理的厌氧氨氧化新技术，具有节省有机碳源和曝气能耗、污泥产量小、减少温室气体排放等诸多优点，但其出水仍含有11%以上硝酸盐。本项目针对当前已工程化应用的高氨氮废水厌氧氨氧化处理的出水、污水处理厂二级处理后含大量硝酸盐的出水，以及含高浓度硝酸盐工业废水的脱氮问题，在课题组首次发现并实现短程反硝化过程的基础上，进一步研究短程反硝化功能微生物将硝酸盐转化为厌氧氨氧化过程反应基质亚硝酸盐的机理，构建更高效、低能耗与节碳源的短程反硝化+厌氧氨氧化工艺，并深入研究。.本项目特色与创新表现在：考察短程反硝化功能菌的富集方法、代谢机理及演替规律；考察短程反硝化动力学特性和稳定维持策略；研究厌氧氨氧化快速启动方法与影响因素；构建厌氧氨氧化与短程反硝化组合工艺，实现高氨氮废水与城市污水的深度脱氮，及高浓度硝酸盐工业废水与城市污水的同步处理；短程反硝化与厌氧氨氧化反应过程N2O产生规律和减排控制策略。

As the new technology of wastewater biological treatment, Anaerobic ammonium oxidation (Anammox) process hold great advantages, including saving organic carbon source and aeration energy, low sludge yield and reducing greenhouse gas emission, but there was still more than 11% of nitrate remained in the effluent. The present program aimed at nitrogen removal from the effluent of full-scale applied anammox with high-ammonia wastewater, effluent of second-class treatment in wastewater treatment plant containing excess nitrate, and high strength nitrate industrial wastewater. Based on the discovery of partial denitrificaton for the first time by our research group, this program will further study on the mechanism of nitrate transformation to nitrite by partial denitrification bacteria, establish partial denitrification + anammox process and investigate in depth, which is the more efficient, lower energy consumed and more carbon source saving process..The feature and highlights are as followings: investigate the methodology of partial denitrification bacteria enrichment, metabolic mechanism and succession pattern; explore partial denitrification kinetics and stable maintenance controlling strategy; study on the rapid start-up method and factors of anammox process; establish the partial denitrification combined anammox process, for advanced nitrogen removal from high-ammonia and municipal wastewater, as well as the simultaneous treatment of high strength nitrate and domestic wastewater; the N2O emission in partial denitrification and anammox process as well as the N2O reduction controlling strategy.