SBR快速实现短程硝化及影响因素  

Achievement and influencing factors of shortcut nitrification in SBR process

作　　者：张立成[1,2] 党维[1] 徐浩[3] 李捷[3] 隋军[3] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,沈阳110168 [2]沈阳建筑大学建筑设计研究院,沈阳110168 [3]广州市市政工程设计研究院,广州510060

出　　处：《环境工程学报》2015年第5期2272-2276,共5页Chinese Journal of Environmental Engineering

基　　金：广州市科技攻关项目(201300000119);广州市市政工程设计研究院科技计划项目(KY-2011-052)

摘　　要：基于建立的序批式反应器(SBR),探索实现城市生活污水短程硝化的主要控制因素。研究结果表明,废水温度维持在(30±1)℃、p H值为7.8~8.2的条件下,采用间歇曝气的运行方式,仅驯化培养29 d,成功实现短程硝化,亚硝氮积累率为95%左右。通过对比发现,间歇曝气方式优于连续曝气方式,间歇曝气能有效地将溶解氧(DO)浓度控制在1.0mg/L以下,从而有利于进行短程硝化反应。此外,温度和p H可以影响亚硝氮的积累效果;当温度在25~35℃、进水p H为7.8~8.2时,亚硝氮的积累情况较好,积累率在91%以上。Based on the established sequencing batch reactor( SBR),the experiment intended to probe into the main controlling factors to achieve the shortcut nitrification of urban sewage. The results showed that it just took 29 days to successfully achieve shortcut nitrification under the conditions of temperature of(30 ± 1) ℃,p H of 7. 8 ~ 8. 2 and intermittent aeration. Besides,the nitrite accumulation rate was around 95%. By comparison,the intermittent aeration is better than the continuous aeration. Intermittent aeration could effectively make dissolved oxygen( DO) concentration under 1. 0 mg / L,which was conducive to shortcut nitrification. The accumulation of nitrite had a better effect under the conditions of the temperature of 25 ~ 35℃,influent p H of 7. 8 ~8. 2,and the accumulation rate was more than 91%.

关 键 词：序批式反应器 短程硝化 间歇曝气 溶解氧 温度 PH 

分 类 号：X703.1[环境科学与工程—环境工程]