单级好氧脉冲式SBR处理垃圾渗滤液深度脱氮

doi:10.3969/j.issn.0438-1157.2012.10.036

化工学报 ›› 2012, Vol. 63 ›› Issue (10): 3262-3268.DOI: 10.3969/j.issn.0438-1157.2012.10.036

单级好氧脉冲式SBR处理垃圾渗滤液深度脱氮

朱如龙¹, 王淑莹¹, 李军², 王凯¹, 苗蕾¹, 彭永臻¹

1. 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;
2. 浙江工业大学建筑工程学院, 浙江杭州 310014

收稿日期:2012-01-17 修回日期:2012-03-20 出版日期:2012-10-05 发布日期:2012-10-05
通讯作者: 王淑莹
作者简介:王淑莹,朱如龙(1987- ),男,硕士研究生。
基金资助:
国家自然科学基金项目(50978003)。

Advanced nitrogen removal of landfill leachate in single stage oxic pulsed SBR process

ZHU Rulong¹, WANG Shuying¹, LI Jun², WANG Kai¹, MIAO Lei¹, PENG Yongzhen¹

1. Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, Beijing University of Technology, Beijing 100124, China;
2. College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China

Received:2012-01-17 Revised:2012-03-20 Online:2012-10-05 Published:2012-10-05
Supported by:
supported by the National Natural Science Foundation of China(50978003).

摘要/Abstract

摘要： 为了考察单级好氧工艺处理垃圾渗滤液的可行性和脱氮性能,采用脉冲进水式SBR工艺处理高氨氮实际垃圾渗滤液。脉冲SBR运行周期共分为4个缺氧段和3个好氧段,采用3次等量进水模式。缺氧₄(An₄)不投加外碳源,利用微生物内碳源将NO₂^--N 还原为N₂。结果表明,经过4个不同进水TN阶段(118 d)的连续运行,获得了稳定和高效的脱氮性能。在进水COD为733~3971 mg·L^-1的条件下,出水COD稳定在298 ~888.15 mg·L^-1;在进水TN为299.78~1100.34 mg·L^-1的条件下,出水TN稳定在13.89~36.27 mg·L^-1。An₄的平均理论内源反硝化速率(TDNR_m)达到1.53 mg N·h^-1·(g MLVSS)^-1。运行阶段的单个周期内,An₄内源反硝化速率(DNR)分为快(DNR₁)和慢(DNR₂)两部分。其中阶段2(Ph₂)中的一个周期内DNR₁可达2.80 mg N·h^-1·(g MLVSS)^-1。在没有物化预处理和不投加外加碳源的情况下,实现单级好氧系统对垃圾渗滤液的深度脱氮。

关键词: 脉冲进水, 垃圾渗滤液, SBR, 内源反硝化

Abstract: In order to investigate the feasibility and denitrification performance of single stage oxic process,pulsed feeding was employed in sequence batch reactor(SBR)process for treating a real landfill leachate containing much ammonia nitrogen(NH₄⁺-N).Three equal feeds were used in the pulsed SBR process containing four anoxic and three oxic stages.No extra carbon source was demanded in all fourth anoxic stage(An₄),and by use of internal carbon source from microorganism NO₂^--N was deoxidated into nitrogen(N₂).The results indicate that the system is of stable and efficient performance of nitrogen removal after the acclimatization of activated sludge,as shown by continuous running of 118 days at 4 various total nitrogen(TN)concentration in influent.When chemical oxygen demand(COD)concentration in influent is a range of 733 mg稬^-1 to 3971 mg稬^-1,its concentration in effluent can be reduced to between 298 mg稬^-1 and 888.15 mg稬^-1,while TN concentration can be decreased from 299.78 mg稬^-1 to 1100.34 mg稬^-1 to between 13.89 mg稬^-1 and 36.27 mg稬^-1.The mean value of theoretical denitrification rate(TDNR_m)by endogenous carbon for An₄ is 1.53 mg N穐^-1?(g MLVSS)^-1.In a single cycle of operating phase,the endogenous denitrification rate(DNR)could be separated into two parts:fast one(DNR₁)and slow one(DNR₂),the value of DNR₁ in a single cycle of phase2(Ph₂) could reach 2.80 mg N穐^-1?(g MLVSS)^-1.Advanced nitrogen removal of landfill leachate can be realized in the single stage oxic process under well-controlled conditions without physicochemical pre-treatment and demand of extra carbon source.

Key words: pulsed feeding, landfill leachate, SBR, endogenous denitrification

中图分类号:

X703

朱如龙, 王淑莹, 李军, 王凯, 苗蕾, 彭永臻. 单级好氧脉冲式SBR处理垃圾渗滤液深度脱氮[J]. 化工学报, 2012, 63(10): 3262-3268.

ZHU Rulong, WANG Shuying, LI Jun, WANG Kai, MIAO Lei, PENG Yongzhen. Advanced nitrogen removal of landfill leachate in single stage oxic pulsed SBR process[J]. CIESC Journal, 2012, 63(10): 3262-3268.

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单级好氧脉冲式SBR处理垃圾渗滤液深度脱氮

Advanced nitrogen removal of landfill leachate in single stage oxic pulsed SBR process

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