碳源对反硝化除磷效能及N2O产生的长期影响  

Long-term impact of carbon sources on denitrifying phosphorus removal performance and N_2O production

作　　者：宋成康 秦健[1] 王亚宜[1] 王冲[1] 王鸿[1] 

机构地区：[1]污染控制与资源化研究国家重点实验室同济大学环境科学与工程学院,上海200092

出　　处：《环境污染与防治》2014年第12期11-16,共6页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.51378370;No.51178325);中央高校基本科研业务费专项基金资助项目(No.0400219238);国家重点实验室自主研究课题(No.0400231010)

摘　　要：基于碳源对反硝化除磷效能以及N2O产生机制尚未明确的现状,采用厌氧/缺氧/好氧序批式反应器(An/A/O-SBR),考察了碳源(乙酸、丙酸和两者的混合酸(摩尔比为1∶1))对反硝化除磷效能和污泥形态的长期影响。结果发现,混合酸系统脱氮除磷效果最稳定,氮和磷平均去除率分别为67.7%和87.0%;而乙酸和丙酸系统较不稳定,氮和磷平均去除率分别为97.6%、51.0%和41.9%、100.0%。混合酸系统检测到明显的N2O释放,而乙酸和丙酸系统的N2O产率较低。The long-term impact of the different carbon sources （acetic acid,propionic acid and their mixed acids （molar ratio was 1： 1）） on denitrifying P removal performance and sludge morphology was conducted in an anaerobic/anoxic/aerobic （An/A/O） sequencing batch reactor （SBR）.The results showed that the nutrient removal performance was stable in the mixed acid system with the average nitrogen and phosphorus removal efficiencies were 67.7% and 87.0%,respectively.While it was relatively unstable in acetic acid and propionic acid systems with the average nitrogen and phosphorus removal efficiencies were 97.6% and 51.0% （acetic acid system）,and 41.9% and 100.0% （propionic acid system）,respectively.An obvious nitrous oxide （N2 O） emission occurred in the mixed acid systems,while there was nearly no N2O produced in the acetic acid and propionic acid cultivated systems.

关 键 词：废水 厌氧 反硝化聚磷菌 碳源 温室气体 

分 类 号：X703[环境科学与工程—环境工程]