首页 | 本学科首页   官方微博 | 高级检索  
     

氨氮生物硝化过程影响因素研究
引用本文:李娟英,赵庆祥.氨氮生物硝化过程影响因素研究[J].中国矿业大学学报,2006,35(1):120-124.
作者姓名:李娟英  赵庆祥
作者单位:1. 华东理工大学,资源与环境工程学院,上海,200237;上海水产大学,生命科学与技术学院,上海,200090
2. 华东理工大学,资源与环境工程学院,上海,200237
摘    要:NH3-N是源水和回用水的重要水质指标且控制十分严格.但由于其浓度比较低,生物脱氮过程中硝化菌的种类及动力学特性与高浓度氨氮系统不同,pH,温度和基质可利用性的影响规律可能也有不同.利用富集培养的硝化细菌就温度、pH和碱度对高、低浓度氨氮硝化的影响进行了研究.结果表明:低浓度氨氮硝化的温度系数(θ=1.105)大于高浓度(θ=1.099),温度对低浓度氨氮硝化的影响较高浓度大;偏碱性的环境更有利于低浓度氨氮硝化的进行,高浓度氨氮在pH-8或Alk/N-9.19左右时硝化速率达到最大,而低浓度氨氮最大硝化速率发生在pH=9或Alk/N=38.39左右.这3个影响因素对高浓度氨氮硝化过程中NH2-N的累积都有显著影响.但和温度相比,pH和碱度是影响低浓度氨氮硝化过程中NH2-N生成的主要因素.

关 键 词:硝化  温度  碱度
文章编号:1000-1964(2006)01-0120-05
收稿时间:01 25 2005 12:00AM
修稿时间:2005年1月25日

Study of Factors Influencing Ammonia Nitrification
LI Juan-ying,ZHAO Qing-xiang.Study of Factors Influencing Ammonia Nitrification[J].Journal of China University of Mining & Technology,2006,35(1):120-124.
Authors:LI Juan-ying  ZHAO Qing-xiang
Affiliation:1. Department of Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China; 2. College of Aqua-life Science and Technology, Shanghai Fisheries University, Shanghai 200090, China
Abstract:NH_3-N,an important water quality index,is limited in discharge stringently.The ammonia concentration is very low,species of nitrifying bacteria and characteristic of nitrification kinetic may be different.The effects of factors such as temperature,pH and alkalinity on nitrification were discussed with enriched nitrobacteria.The results show that the influence of temperature on nitrification at low ammonia concentration was stronger than that at high concentration system.The alkaline condition is favorable to achieve complete nitrification of low ammonia concentration.The nitrification rate of high concentration ammonia is maximum at pH of 8 or(Alk/N) of 9.19,and that of low concentration ammonia achieve maximum at pH of 9 or(Alk/N) of 38.39.The three factors all had prominent effects on nitrification at high level.Whereas, Compared with temperature,pH and alkalinity were the main factors influencing ammonia nitrification at low ammonia concentration.
Keywords:pH  NH3-N
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号