低温下高盐废水氨氮处理效率研究  

Ammonia Nitrogen Removal Efficiency Under Low Temperature in High Salinity Waste Water

作　　者：李梅[1] 于德爽[2] 

机构地区：[1]河南科技大学化工与制药学院,河南洛阳471003 [2]青岛大学化学化工与环境学院,山东青岛266071

出　　处：《河南科技大学学报（自然科学版）》2011年第5期98-100,104,共4页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(50678085)

摘　　要：针对低温条件对高盐废水氨氮处理效果的影响,分别采用MBR和A/O工艺进行试验研究。试验中主要选择快速降温和缓慢降温两种方式考察氨氮去除率随温度下降的变化趋势。试验结果表明:低温条件下,50%海水比例时,随着温度的降低,两种工艺氨氮去除率都呈明显下降趋势,快速降温比缓慢降温对处理效果的冲击更大。在相同温度变化情况下,MBR工艺与A/O工艺相比对氨氮的处理效果更好且受温度变化的冲击要小,相对稳定。从生物相分析可知:低温条件下MBR系统能够维持一定的氨氮处理效率主要是因为耐冷菌的存在。The MBR process and A/O process were applied to study the influence of low temperature on the ammonia nitrogen removal efficiency in the high salinity waste water.The chang rule of ammonia nitrogen removal rate with temperature drops was researched by two different ways from the fast to the slowly.The experimental results indicated that the ammonia nitrogen removal rate of two processes dropped obviously with 50% seawater proportion under low temperature condition.The removal efficiency in the fast way was much stronger than in the slowly way.The treatment efficiency of the MBR process was better than the A/O process under same low temperature condition.The effect on the MBR process of temperature change was smaller than that on the A/O process,and the MBR process was more stable under low temperature.The microorganism observation to the MBR process under low temperature indicated that the cold-adapted microorganism was the main function to maitain a certain ammonia nitrogen removal efficiency.

关 键 词：高盐废水 低温 快速降温 缓慢降温 氨氮 

分 类 号：X703.1[环境科学与工程—环境工程]