Comprehensive evaluation of sulfur-siderite composite filler on load shock resistance of constructed wetlands under unsteady flow
文献类型：期刊论文
| 作者 | Wang, Rongzhen3; Zhang, Xinwen3; Yang, Jianchao1,2,4; Yang, Shuya3; Zhao, Fangxing3; Xu, Zhenghe3 |
| 刊名 | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
 |
| 出版日期 | 2025-06-01 |
| 卷号 | 13期号:3页码:12 |
| 关键词 | Constructed wetlands Sulfur-siderite composite filler Unsteady flow Load shock resistance Nitrogen removal |
| ISSN号 | 2213-2929 |
| DOI | 10.1016/j.jece.2025.116787 |
| 通讯作者 | Zhang, Xinwen(stu_zhangxw@ujn.edu.cn) ; Xu, Zhenghe(xu4045@126.com) |
| 英文摘要 | Traditional constructed wetlands (CWs) suffer from imbalanced carbon to nitrogen ratios in the inflow, resulting in unsatisfactory total nitrogen (TN) removal efficiency. In addition, fluctuations in water quantity and quality can further impair its nitrogen removal performance. In this study, sulfur-siderite composite filler (SSCF) was used as the substrate for CWs to maintain nitrogen removal performance and reduce performance loss after a 20 hour loading shock with a TN removal rate of 77.79 %. These improvements were mainly attributed to the abundant electrons provided by sulfur and siderite for denitrification processes, and the higher concentration of nitrogen in load shock simultaneously enhanced nitrification and denitrification intensity and electron transfer system activity (ETSA). In addition, Acorus calamus L. also resisted external environmental stress by increasing proline (Pro) content and triggering antioxidant system. SSCF optimized the microbial community structure of CWs, with Thiobacillus and Ferritropicum consistently being the dominant bacteria before and after load shock. Further analysis of nitrogen removal pathway revealed that SSCF enhanced the reduction process of nitrite and nitrous oxide before and after load shock, achieving effective nitrogen removal while potentially reducing N2O release. The results of the study expanded the potential application of CWs in variable flow environments. |
| WOS关键词 | DENITRIFICATION ; METABOLISM ; WATER |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001483071400001 |
| 资助机构 | Key Research and Development Pro-gram of Shandong Province of China ; Youth Inno-vation Team in Colleges and universities of Shandong Province ; Science & Technology Specific Project in Agricultural High-tech Industrial Demonstration Area of the Yellow River Delta ; National Natural Science Foundation of China |
| 源URL | [http://ir.yic.ac.cn/handle/133337/41314]  |
| 专题 | 烟台海岸带研究所_中科院烟台海岸带研究所知识产出 |
| 通讯作者 | Zhang, Xinwen; Xu, Zhenghe |
| 作者单位 | 1.Natl Ctr Technol Innovat Comprehens Utilizat Salin, Academician Workstn Agr High tech Ind Area Yellow, Dongying 257300, Shandong, Peoples R China 2.Shandong City Serv Inst, Yantai 264003, Shandong, Peoples R China 3.Univ Jinan, Sch Water Conservancy & Environm, Jinan 250022, Shandong, Peoples R China 4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Rongzhen,Zhang, Xinwen,Yang, Jianchao,et al. Comprehensive evaluation of sulfur-siderite composite filler on load shock resistance of constructed wetlands under unsteady flow[J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,2025,13(3):12. |
| APA | Wang, Rongzhen,Zhang, Xinwen,Yang, Jianchao,Yang, Shuya,Zhao, Fangxing,&Xu, Zhenghe.(2025).Comprehensive evaluation of sulfur-siderite composite filler on load shock resistance of constructed wetlands under unsteady flow.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,13(3),12. |
| MLA | Wang, Rongzhen,et al."Comprehensive evaluation of sulfur-siderite composite filler on load shock resistance of constructed wetlands under unsteady flow".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 13.3(2025):12. |
入库方式： OAI收割
来源：烟台海岸带研究所
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