高氨废水短程硝化特性  

Performance of shortcut nitrification for high ammonia wastewater treatment

作　　者：王磊[1] 段雪[1] 吕永涛[1] 穆建雄 鞠恺[1] 王旭东[1] 王志盈[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,西安710055

出　　处：《环境工程学报》2014年第1期22-26,共5页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51108367);高等学校博士学科点专项科研基金资助项目(20113120120009);陕西省教育厅专项基金资助项目(11JK0759);陕西省教育厅重点实验室建设项目(11JS056)

摘　　要：采用SBR装置，针对高氨废水的特点，在高氨条件下，以高氨低氧为转化手段，实现高氨废水短程硝化过程中亚硝化菌的驯化与积累。控制温度为28～31℃，曝气量为15～60L／h，pH控制在7．8～8．2的条件下连续运行78d。实验结果表明，运行11d后实现了短程硝化，从11d至78d属于系统氨氮负荷提高期。在运行过程中，氨氮污泥负荷从开始的0．023kg／（kg·d）逐步上升为0．3kg／（kg·d），最高时达到0．34kg／（kg·d），此时氨氮去除率仍维持90％以上。为观察驯化后短程硝化菌的形态，取驯化好的污泥进行电镜扫描，结果表明，污泥中的细菌形态主要以球状菌为主。According to the characteristics of high ammonia wastewater, a SBR was employed to investigate the performance of shortcut nitrification for 78 days＇ continuous operation. The ammonia oxidizing bacteria were cultivated with high influeut ammonia concentration and low DO concentration under the conditions of 28 - 31℃ , air exposure of 15 to 60 L/h and pH ofT. 8 - 8.2. Results show that the shortcut nitrification process was started up after 11 days＇ operation, while the ammonia removal loading increased gradually from 0. 023 kg/（kg · d） to 0.3 kg/（kg· d） from the llth day to the 78th day. The ammonia removal efficiency reached to 90% in the highest ammonia removal loading （0.34 kg/（ kg ·d） ）. In order to observe the morphology of cultured bacteria, SEM was used to detect the sludge, it showed that spherical bacteria is primary bacterial morphology in sludge.

关 键 词：高氨废水 SBR 短程硝化 

分 类 号：X703[环境科学与工程—环境工程]