[1]王凯,王淑莹,朱如龙,等.改进SBR处理垃圾渗滤液深度脱氮的启动与实现[J].东南大学学报(自然科学版),2013,43(2):386-391.[doi:10.3969/j.issn.1001-0505.2013.02.030]
　Wang Kai,Wang Shuying,Zhu Rulong,et al.Startup and realization of advanced nitrogen removal of landfill leachate by modified SBR[J].Journal of Southeast University (Natural Science Edition),2013,43(2):386-391.[doi:10.3969/j.issn.1001-0505.2013.02.030]
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改进SBR处理垃圾渗滤液深度脱氮的启动与实现()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
43
期数:
2013年第2期
页码:
386-391
栏目:
环境科学与工程
出版日期:
2013-03-20

文章信息/Info

Title:
Startup and realization of advanced nitrogen removal of landfill leachate by modified SBR
作者:
王凯; 王淑莹; 朱如龙; 苗蕾; 彭永臻
北京工业大学北京市水质科学与水环境恢复工程重点实验室, 北京100124
Author(s):
Wang Kai;  Wang Shuying;  Zhu Rulong;  Miao Lei;  Peng Yongzhen
Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
关键词:
垃圾渗滤液;  SBR;  外碳源;  内源反硝化
Keywords:
landfill leachate;  sequencing batch reactor;  external carbon;  endogenous denitrification
分类号:
X703
DOI:
10.3969/j.issn.1001-0505.2013.02.030
摘要:
为了在去除渗滤液中有机物的同时实现深度脱氮,利用SBR法灵活多变的反应过程,采用交替曝气和搅拌至硝化结束,然后在不添加任何外碳源的条件下以充分缺氧搅拌至内源反硝化结束的方式运行SBR系统.系统通过交替硝化反硝化、同步硝化反硝化和内源反硝化的协同作用,可以在不添加任何有机碳源的条件下,使系统出水的总氮含量小于40 mg/L,去除率达到95%以上,达到中国最新颁布的渗滤液总氮的排放标准.同时,由于50%左右的总氮是利用原水碳源在内源反硝化的作用下脱除的,试验期间的污泥浓度在没有排泥的条件下始终稳定在6 g/L左右,污泥产量大幅度减少.不同操作模式下的对比试验表明:污泥中PHA的含量是决定系统脱氮效率的重要因素;硝化前的厌氧搅拌以及短间隔曝气有利于增加污泥的储碳量,提高了系统的脱氮效率;传统的持续曝气后搅拌无法通过内源反硝化实现深度脱氮.
Abstract:
In order to achieve advanced nitrogen removal while removing organics in the landfill leachate, SBR(sequencing batch reactor)was applied with the operation in which the stir and aeration were alternately proceeded until the completion of nitrification and then anoxic stir was well proceeded until the completion of endogenous denitrification without any external carbon source added. Under the synergistic effect of alternate stir and aeration, SND(simultaneous nitrification and denitrification)and endogenous denitrification, the effluent TN(total nitrogen)can be less than 40 mg/L and TN removal reaches over 95% without any external carbon source added, which meets the Chinese latest TN discharge standards of leachate. Meanwhile, since 50% TN is removed through endogenous denitrification,the mixed liquor suspended solids maintains at about 6 g/L and the yield of sludge reduces greatly. The contrast tests under different operation modes indicate that the content of polyhydroxyalkanoates in the activated sludge is the key factor of the nitrogen removal efficiency of the system. The previous anaerobic time before nitrification and the short interval time during the nitrification are good to increase the carbon storage of the sludge and improve the nitrogen removal efficiency. Conventional continuous aeration without stirring can not achieve advanced nitrogen removal via endogenous denitrification.

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备注/Memo

备注/Memo:
作者简介: 王凯(1983—),男,博士生;王淑莹(联系人),女,教授,博士生导师,wsy@bjut.edu.cn.
基金项目: 国家自然科学基金资助项目(51178007)、北京市教委科技创新平台资助项目.
引文格式: 王凯,王淑莹,朱如龙,等.改进SBR处理垃圾渗滤液深度脱氮［J］.东南大学学报:自然科学版,2013,43(2):386-391. ［doi:10.3969/j.issn.1001-0505.2013.02.030］
更新日期/Last Update: 2013-03-20