Mainstream nitritation and denitritation in a pilot-scale multi-cycle sequencing batch reactor
Mainstream nitritation and denitritation in a pilot-scale multi-cycle sequencing batch reactor
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中试规模多循环序批式反应器中的主流亚硝化和脱亚硝化
DOI：
10.1016/j.jwpe.2022.102648
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发表时间：
2022-04
影响因子：
7
通讯作者：
Xu Guangjing
中科院分区：
文献类型：
--
作者：
Guo Qiming;Sun Yucong;Chen Jing;Zhang Qun;Chen Lijun;An Pinglin;Wang Guanping;Xu Guangjing
外加碳源深度脱氮会大大增加城市污水处理的成本。在中试规模的多循环序批式反应器中，开发了一种碳节约型亚硝化和亚硝化工艺，历时230天。在前三个阶段，没有外部碳添加的中试装置的出水总氮（TN）浓度是类似的现场循环活性污泥系统与外部碳添加。当温度为28.3 °C、溶解氧浓度为2.0 mg/L、COD/N比为4.5：1、好氧时间为32.8 min时，亚硝酸盐积累率和总氮去除率分别达到最高（57.3%和85.1%）。暴雨后进水TN下降，但缩短好氧期、降低DO（1.5mg/L）仍能有效抑制NOB。在冬季，通过在阶段IV添加葡萄糖，仍然获得轻微的亚硝酸盐积累。NOB与硝化细菌之间的亚硝酸盐竞争是NOB抑制的关键。该工艺是污水处理厂实现高排放标准和节约碳源的良好选择。
Addition of external carbon sources for deep nitrogen removal highly increased the cost of municipal wastewater treatment. In this study, a carbon-saving nitritation and denitritation process was developed in a pilot-scale multi-cycle sequential batch reactor over 230 days. In the first three stages, the effluent total nitrogen (TN) concentration of the pilot plant without external carbon addition was similar to that of the on-site cyclic activated sludge system with external carbon addition. A highest nitrite accumulation rate (57.3%) and TN removal rate (85.1%) was observed, respectively, under conditions that temperature of 28.3 °C, dissolved oxygen concentrations of 2.0 mg/L and COD/N ratios of 4.5:1 as well as a short oxic phase (32.8 min). As the influent TN decreased after heavy rain, NOB could still be suppressed by shortening oxic phase and lowering DO (1.5 mg/L). In winter, slight nitrite accumulation was still obtained by adding glucose in stage IV. Nitrite competition between NOB and denitrifiers was indeed the key to NOB suppression. It should be a good choice for wastewater treatment plants to achieve high discharge standard and save carbon source using such a proposed process.
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影响因子：
15.1
作者：
Jiang, Hangcheng;Liu, Guo-hua;Wang, Hongchen
通讯作者：
Wang, Hongchen
影响因子：
5.2
作者：
Kristensen JM;Singleton C;Clegg LA;Petriglieri F;Nielsen PH
通讯作者：
Nielsen PH
COD/N 比率和 DO 浓度对多循环 SBR 中 NOB 抑制的影响
影响因子：
7.7
作者：
Xu Guangjing;Zhang Zhihao;Gao Fan
通讯作者：
Gao Fan
影响因子：
8.8
作者：
Guangjing Xu;Han Wang;Jun Gu;Nan Shen;Z. Qiu;Yan Zhou;Yu Liu
通讯作者：
Guangjing Xu;Han Wang;Jun Gu;Nan Shen;Z. Qiu;Yan Zhou;Yu Liu
影响因子：
12.8
作者：
C. Picioreanu;Julio Pérez;M. V. van Loosdrecht
通讯作者：
C. Picioreanu;Julio Pérez;M. V. van Loosdrecht