[1]史静,吕锡武,许正文,等.pH和DO作为A2N-IC-SBR工艺实时控制参数[J].东南大学学报(自然科学版),2014,44(5):981-988.[doi:10.3969/j.issn.1001-0505.2014.05.019]
 Shi Jing,Lü Xiwu,Xu Zhengwen,et al.Study on DO and pH as on-line control parameters in A2N-IC-SBR process[J].Journal of Southeast University (Natural Science Edition),2014,44(5):981-988.[doi:10.3969/j.issn.1001-0505.2014.05.019]
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pH和DO作为A2N-IC-SBR工艺实时控制参数()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第5期
页码:
981-988
栏目:
环境科学与工程
出版日期:
2014-09-20

文章信息/Info

Title:
Study on DO and pH as on-line control parameters in A2N-IC-SBR process
作者:
史静12吕锡武1许正文3张斯路2方梦媛2
1东南大学能源与环境学院, 南京 210096; 2中国药科大学理学院, 南京 211198; 3 南京信息工程大学环境科学与工程学院, 南京 210044
Author(s):
Shi Jing12 Lü Xiwu1 Xu Zhengwen3 Zhang Silu2 Fang Menyan2
1School of Energy and Environment, Southeast University, Nanjing 210096, China
2School of Science, China Pharmaceutical University, Nanjing 211198, China
3School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
关键词:
A2N-IC工艺 反硝化除磷 脱氮除磷
Keywords:
anaerobic/anoxic-nitration-induced crystallization(A2N-IC) denitrifying phosphorus removal nitrogen and phosphorus removal
分类号:
X703
DOI:
10.3969/j.issn.1001-0505.2014.05.019
摘要:
试验从硝化污泥和聚磷污泥的培养开始至A2N-IC-SBR工艺稳定运行结束,系统地记录了污泥驯化培养阶段、A2N工艺运行阶段、A2N-IC工艺运行阶段中pH和DO的变化与氮磷浓度的关系.结果表明:厌氧阶段pH的变化比较复杂,与进水碳磷比、反硝化聚磷菌和好氧聚磷菌的富集程度等因素有关,不同的进水水质与污泥有不同的变化规律;诱导结晶阶段pH的变化受到钙盐投药方式以及混合方式的影响,pH与SP浓度的变化并不存在明显的相关性;硝化反应中硝化作用完成的特征点较明显,d(DO)/dt最大值点及d(pH)/dt由负变正的特征点均可作为硝化完成的指示点;好氧聚磷阶段,聚磷终点与pH拐点、DO大幅上升出现的时刻相同;缺氧聚磷阶段,pH停止上升的时刻可以用来指示聚磷的完成.
Abstract:
From the phosphorus removal sludge and nitrogen removal sludge cultivation period to the steady operation period of A2N-IC-SBR(anaerobic/anoxic/nitration-induced crystallization-sequencing batch reactor, A2N-IC-SBR)process, the relationships between pH/DO and nutrient concentrations were investigated systematically, including sludge cultivation stage, A2N process operation stage and A2N-IC process operation stage. The results indicate that in the anaerobic stage, pH profile is complicated. It is related to the influent C/P ratio, enrichment of denitrifying polyphosphate accumulating organisms and phosphorus accumulating organisms. With different sludge characteristics and influent wastewater compositions, it shows different variations. During the IC(induced crystallization)stage, the dosage modes and mixture approaches affect the pH variations. SP has no obvious correlation with pH. Under the nitrification stage, the feature points for nitrification ending are apparent. The maximum value of d(DO)/dt and the point of d(pH)/dt from negative to positive can both be the feature points for indicating the end of nitrification. In the aerobic phosphorus removal stage, the inflexion point of pH, the sharp rise point of DO and the end of phosphorus removal appear at the same time. An inflexion point of pH is observed when the denitrifying phosphorus removal is finished.

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备注/Memo

备注/Memo:
收稿日期: 2014-04-10.
作者简介: 史静(1984—),女,博士,讲师;吕锡武(联系人),男,博士,教授,博士生导师,xiwulu@seu.edu.cn.
基金项目: 国家重大专项资助项目(2012ZX07101-005)、江苏省自然科学基金资助项目(BK20140660)、中国药科大学理学院青年教师科研资助计划(2013)、中国药科大学大学生创新训练计划资助项目.
引用本文: 史静,吕锡武,许正文,等.pH和DO作为A2N-IC-SBR工艺实时控制参数[J].东南大学学报:自然科学版,2014,44(5):981-988. [doi:10.3969/j.issn.1001-0505.2014.05.019]
更新日期/Last Update: 2014-09-20