污水生物脱氮过程中N_2O的产生与控制研究进展  

Review on Production and Control of N_2O During Biological Nitrogen Removal from Wastewater

作　　者：胡振[1] 张建[1] 谢慧君[2] 李善评[1] 张婷婷[1] 李一冉[1] 

机构地区：[1]山东大学环境科学与工程学院 [2]山东大学环境研究院,山东济南250100

出　　处：《环境科学与技术》2011年第12期95-100,共6页Environmental Science & Technology

基　　金：国家重大科技专项--河口多级串联人工湿地水质改善技术与示范(2009ZX07210-009-04);山东大学自主创新基金杰青培育项目(2009JQ009)

摘　　要：N2O是一种重要的温室气体,并且能破坏臭氧层,因而在全球变化研究中受到广泛关注。研究表明,污水生物脱氮过程是N2O的一个重要人为源。为此,对污水生物脱氮过程中N2O的产生与控制进行研究具有重要的意义。文章对污水生物脱氮过程中N2O的产生机理、影响因素和减量化策略进行了论述。N2O通常被认为是不完全硝化作用或不完全反硝化作用的产物,其在生物脱氮过程中释放的影响因素可归纳为污水水质、处理工艺、运行工况以及微生物种群结构四个方面。结合实际情况,N2O减量化策略的研究应该集中于运行工况优化和微生物种群结构调控两个方面。指出N2O产生机理的进一步完善和微生物调控技术的实用化是该领域的重点研究方向。Nitrous oxide （N2O） is an important greenhouse gas and can destroy the ozone layer. More and more attentions have been paid to its effect on global changes. Biological nitrogen removal of domestic wastewater has been identified as an important anthropogenic source of N2O. Therefore it is important to study the production and control of N2O during biological nitrogen removal process. Review was made on the N2O production mechanisms, affecting factors and reduction strategies of biological nitrogen removal. N2O is usually considered to be the product of incomplete nitrification and denitrification. It was concluded that N2O emission was affected by wastewater characteristic, treatment process, operation condition and microbial community composition. The study of reduction strategy should focus on the latter two aspects. Further improvement of N2O production mechanism and practicality of microbial artificial control technology are the focus of further research in this field.

关 键 词：氧化亚氮 生物脱氮 产生机理 减量化 

分 类 号：X703.1[环境科学与工程—环境工程]