A2N-IC-SBR改进工艺强化脱氮除磷特性

doi:10.3969/j.issn.0438-1157.2014.10.045

化工学报 ›› 2014, Vol. 65 ›› Issue (10): 4094-4100.DOI: 10.3969/j.issn.0438-1157.2014.10.045

A₂N-IC-SBR改进工艺强化脱氮除磷特性

史静^1,2, 吕锡武¹, 许正文³, 吴青青², 方梦媛²

1 东南大学能源与环境学院, 江苏南京 210096;
2 中国药科大学理学院, 江苏南京 211198;
3 南京信息工程大学环境科学与工程学院, 江苏南京 210044

收稿日期:2014-04-08 修回日期:2014-06-06 出版日期:2014-10-05 发布日期:2014-10-05
通讯作者: 吕锡武
基金资助:
国家重大专项（2012ZX07101-005）；江苏省自然科学基金项目（BK20140660）；中国药科大学理学院青年教师科研资助计划项目；国家级大学生创新创业训练计划项目。

Enhanced nutrient removal in improved A₂N-IC-SBR process

SHI Jing^1,2, LÜ Xiwu¹, XU Zhengwen³, WU Qingqing², FANG Mengyuan²

1 School of Energy & Environment, Southeast University, Nanjing 210096, Jiangsu, China;
2 School of Science, China Pharmaceutical University, Nanjing 211198, Jiangsu, China;
3 School of Environmental Science & Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, China

Received:2014-04-08 Revised:2014-06-06 Online:2014-10-05 Published:2014-10-05
Supported by:
supported by the National Special S&T Project (2012ZX07101-005), the Natural Science Foundation of Jiangsu Province(BK20140660), the Scientific Research Foundation for Young Teachers, School of Science, China Pharmaceutical University and the National Training Program of Innovation and Entrepreneurship for Undergraduates.

摘要/Abstract

摘要： 针对A₂N-IC-SBR工艺中部分出水氨氮不能达标的问题，提出改进方案，并考察了改进方案下A₂N-IC-SBR工艺的脱氮除磷性能。结果表明：改进方案可以大幅提高氨氮去除率，且不会影响出水磷浓度。氨氮、总氮、总磷出水浓度均能够达到GB 18918-2002一级A标准。与连续流A₂N-IC工艺相比，A₂N-IC-SBR在强化磷回收方面具有明显优势：采用了连续均匀投加钙盐的方式，有利于非均相结晶，产生了片状的钙磷结晶体。

关键词: A₂N-IC-SBR工艺, 脱氮除磷, 磷回收, 结晶, 废水, 可持续性

Abstract: To solve the problem of the unsatisfactory effluent ammonia concentration in the A₂N-IC-SBR (anaerobic/anoxic/nitration-induced crystallization-sequencing batch reactor) process, improvement measures were taken. Nutrient removal performance was investigated in the improved system. Ammonia removal rates increased significantly without any negative effect on phosphorus removal. After the improvement measures, effluent ammonia, total nitrogen and total phosphorus all reached the Chinese National Sewage Discharge Standard Class I (grade A) level. Compared with A₂N-IC-continuous flow process, obvious advantage of enhancing phosphorus recovery was noticed. Calcium could be added continuously and evenly during the chemical phosphorus recovery reaction stage, benefiting heterogeneous precipitation. And plate-shaped crystallization product was formed on the seeds.

Key words: anaerobic-anoxic/nitrifying/induced crystallization sequence batch reactors process (A₂N-IC-SBR), nitrogen and phosphorus removal, phosphorus recovery, crystallization, waste water, sustainability

中图分类号:

X703.1

史静, 吕锡武, 许正文, 吴青青, 方梦媛. A₂N-IC-SBR改进工艺强化脱氮除磷特性[J]. 化工学报, 2014, 65(10): 4094-4100.

SHI Jing, LÜ Xiwu, XU Zhengwen, WU Qingqing, FANG Mengyuan. Enhanced nutrient removal in improved A₂N-IC-SBR process[J]. CIESC Journal, 2014, 65(10): 4094-4100.

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A₂N-IC-SBR改进工艺强化脱氮除磷特性

Enhanced nutrient removal in improved A₂N-IC-SBR process

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