同步半硝化-厌氧氨氧化颗粒污泥工艺在低氨氮污水脱氮的应用  

Application of Simultaneous Partial Nitritation/Anammox With Granular Sludge to the Treatment of Low Ammonia Concentration Wastewater

作　　者：刘国华[1] 范强[1] 徐相龙 马艺鸣[1] 王洪臣[1] 

机构地区：[1]中国人民大学环境学院,北京100872

出　　处：《北京工业大学学报》2015年第10期1479-1484,共6页Journal of Beijing University of Technology

基　　金：中央高校基本科研业务费专项资金资助项目(13XNLF04)

摘　　要：为了检验同步半硝化-厌氧氨氧化颗粒污泥工艺（simultaneous partial nitritation/Anammox with granularsludge,SPNAGS）对低氨氮污水的生物脱氮效果,开展了长期的小试试验研究.结果显示,在污水氨氮浓度从200mg/L降到20～50 mg/L时,系统中的颗粒污泥发生解体,难以保持颗粒状,且污泥颜色由原来的红棕色变为灰黄色,系统仍然保持很高的氨氮去除率（〉95%）,但总氮的去除率却逐渐降低,最后仅有20%左右,约80%的氨氮转化为硝酸盐.因此,本研究进一步证明了该工艺在应用于低氨氮浓度污水生物脱氮时,系统内亚硝酸盐氧化细菌（nitrite-oxidizing bacteria,NOB）的控制既是关键,也是挑战.To evaluate the performance of the simultaneous partial nitritation/Anammox with granular sludge（SPNAGS） process to treat low ammonia concentration wastewater,a lab-scale study was conducted.Results show that when ammonia concentration is 20 ～ 50 mg/L,granular sludge breaks up gradually and the color varies from reddish-brown to grayish yellow,although the ammonia removal rate is always higher than 95% ,the total nitrogen（TN） removal rate is only 20% at the final phase of the experiment.80% ammonia is converted into nitrate.Thus,the out-selection of wastewater nitriteoxidizing bacteria（NOB） control is very important to the SPNAGS process to treat low ammonia concentration wastewater.

关 键 词：一体式厌氧氨氧化 颗粒污泥 低氨氮污水 出水硝酸盐 亚硝酸盐氧化细菌(NOB) 

分 类 号：X703.1[环境科学与工程—环境工程]