新型生物脱氮工艺的研究进展

新型生物脱氮技术已经在国内外展开了广泛的研究和应用,为废水脱氮处理提供了一个实用而节能的新途径。该技术基于氨氮从短程硝化途径转化为氮气的生物反应过程,根据反应条件的不同,主要包括亚硝酸盐存在条件下的高活性氨氮去除反应器 (SHARON);厌氧氨氧化工艺(ANAMMOX);亚硝酸盐存在的条件下全程自养脱氮过程(CANON);限氧自养硝化反硝化(OLAND)。介绍了国内外对新型工艺运行参数和影响因素(DO,ORP,pH等)的研究状况,以及新型生物脱氮反应器研究成果。

Advances in the Process of Biological Nitrogen Removal

Nitrogen removal in wastewater treatment is significantly improved through introduction of new mi-crobial treatment technologies that provide practicable and economical alternatives for treating nitrogen-laden wastewater. The new process aims at the removal of nitrogen from wastewater containing high strength ammonium based on partial nitrification of ammonium to nitrite combined with anaerobic ammonium oxidation which mainly refers to single reactor system for high ammonia removal over nitrite (SHARON) process, anaerobic ammonium oxidation (ANAMMOX) process, and completely autographic nitrogen removal over nitrite (CANON) process and the process of oxygen limited autotrophic nitrification denitrification (OLAND). Various factors including DO, ORP and pH involved in the new process were analysed and recent studies on new N-remov-al reactors were also illustrated.