A pilot-scale study of a novel two-stage denitrification filter
A pilot-scale study of a novel two-stage denitrification filter
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新型两级反硝化过滤器的中试研究
DOI：
10.1016/j.jwpe.2020.101873
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发表时间：
2021-02
影响因子：
7
通讯作者：
Xu Guangjing
中科院分区：
文献类型：
--
作者：
Guo Qiming;Yang Zhihong;Zhao Qun;Chen Jing;Li Jie;Chen Lijun;Shi Wei;An Pinglin;Wang Guanping;Xu Guangjing
在本研究中，开发了一种中试规模的两级反硝化过滤器（TSDNF），以进一步去除循环活性污泥系统中的出水硝酸盐。海绵铁和火山岩分别作为DNF-1和DNF-2过滤层。采用含火山岩的单级DNF-3过滤器作为对照。大多数溶解氧（DO）被DNF-1中的铁氧化消耗，反过来DNF-2中的反硝化速率增加。在没有有机碳的情况下，DNF-1中NO3−-N的去除率为17.9%±13.6%，使TSDNF中NO3−-N的去除率显著提高，COD/NO3−-N的去除率约为2.6。自养反硝化作用在DNF-1中由优势的Fe（II）氧化硝酸还原gallionellaceae属（21.38%）完成，而在DNF-2和DNF-3中均以普通反硝化菌为主。此外，DNF-1具有明显的化学除磷效果（83.3%）。因此，利用海绵铁过滤器释放的铁离子可以同时实现自养反硝化和化学除磷，这为重塑二级澄清出水氮磷深度去除设计提供了新的模式。
In this study, a pilot-scale two-stage denitrification filter (TSDNF) was developed to further remove the effluent nitrate from a cyclic activated sludge system. Sponge iron and volcanic rock were used as DNF-1 and DNF-2 filter beds, respectively. A single-stage DNF-3 filter with volcanic rock was used as the control. Most dissolved oxygen (DO) was consumed for iron oxidation in the DNF-1, and in turn denitrification rates increased in the DNF-2. In the DNF-1, 17.9 %±13.6 % of the NO3−-N was removed in the absence of organic carbons, resulting in a significant increase in the total NO3−-N removal in the TSDNF with a COD/NO3−-N ratio of about 2.6. Autotrophic denitrification should be finished by the dominant Fe(II)-oxidizing nitrate-reducingGallionellaceaegenus (21.38 %) in the DNF-1, while common denitrifying strains were dominant in both DNF-2 and DNF-3. Moreover, obvious chemical phosphorus removal (83.3 %) was found in the DNF-1. Therefore, simultaneous autotrophic denitrification and chemical P-removal can be achieved using iron ions released from sponge iron filters, which provides a new model to reshape the design of advanced removal of nitrogen and phosphorus in the secondary clarifier effluent.
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影响因子：
7.8
作者：
W. Qin;Bingqing Zhang;Rui Xu;X. Wen
通讯作者：
W. Qin;Bingqing Zhang;Rui Xu;X. Wen
影响因子：
11.4
作者：
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影响因子：
--
作者：
Billings AF;Fortney JL;Hazen TC;Simmons B;Davenport KW;Goodwin L;Ivanova N;Kyrpides NC;Mavromatis K;Woyke T;DeAngelis KM
通讯作者：
DeAngelis KM
阐明人工湿地-海绵铁耦合系统的硝酸盐去除途径以及海绵铁对湿地生态系统的影响
影响因子：
13.6
作者：
Si Zhihao;Song Xinshan;Wang Yuhui;Cao Xin;Wang Yifei;Zhao Yufeng;Ge Xiaoyan;S;Wolfgang
通讯作者：
Wolfgang
影响因子：
3.8
作者：
Jun Zhou;Hongyu Wang;Kai Yang;Bin Ji;Dan Chen;Huining Zhang;Yuchong Sun;Jun Tian
通讯作者：
Jun Zhou;Hongyu Wang;Kai Yang;Bin Ji;Dan Chen;Huining Zhang;Yuchong Sun;Jun Tian