新型生物脱氮工艺中N_2O产生及释放研究进展  

PROGRESS OF N_2O PRODUCTION AND EMISSION IN NOVEL BIOLOGICAL NITROGEN REMOVAL PROCESSES

作　　者：王赛[1] 王淑莹[1] 巩有奎[1] 彭永臻[1] 张静蓉[1] 

机构地区：[1]北京工业大学环境与能源工程学院,北京100022

出　　处：《水处理技术》2010年第3期5-9,28,共6页Technology of Water Treatment

基　　金："十一五"国家科技支撑计划重点项目-SBR工艺城市污水处理厂节能降耗关键技术(2006BAC19B03);北京市教委科技创新平台项目(PXM2008_014204_050843)

摘　　要：N2O是重要的温室气体之一,微生物作用是大气中N2O的主要产生源。大量污水脱氮工艺的研究及应用表明,生物脱氮过程中N2O主要产生于微生物的硝化和反硝化代谢过程。近年来,许多新型生物脱氮工艺已逐步应用到实际污水处理中。本文阐述了硝化、反硝化阶段N2O的产生机理,并分析了传统生物脱氮工艺及同步硝化反硝化、短程硝化-反硝化、厌氧氨氧化、反硝化除磷等新型工艺中N2O的产生量及其影响因素,提出在追求高脱氮效率的同时,优化系统运行条件及种群结构,可在一定程度上降低系统N2O的产量及危害,为新型生物脱氮工艺实际运行过程中降低N2O的产量提供参考。Nitrous oxide （N2O） is one of the important greenhouse gases. Microbial activities are the source of N2O in the atmosphere. Many studies and applications of wastewater nitrogen removal processes indicated that N2O is mainly produced during both nitrification and denitrification in biological wastewater treatment processes. Currently, a lot of novel technologies been developed would be applied in practical treatment gradually. The mechanics of N2O emission in nitrification and denitfification are discussed here. Moreover, this article analyzes N2O emission and discusses the influence factors in traditional process and novel processes, which include simultaneous nitrification and denitrification, shortcut nitrification and denitrification, ANAM- MOX, denitrifying dephosphatation and so on, arising it would be reducing the N2O production through optimizing operating condition and microbiological mechanism while pursuing high efficiency of nitrogen removal. This article can provide references for reducing N2O emission in novel nitrogen removal processes.

关 键 词：N2O 产生机理 新型生物脱氮工艺 

分 类 号：X703.1[环境科学与工程—环境工程]