Enhanced ammonia removal in tidal flow constructed wetland by incorporating steel slag: Performance, microbial community, and heavy metal release
文献类型：期刊论文
| 作者 | Zhang, Quan1,2,3,4; Yu, Xingyu1,2,3,4; Yang, Yongqiang2,3,4 ; Ruan, Jingjun1,2,3,4; Zou, Yuhuan1,2,3,4; Wu, Shijun2,3,4; Chen, Fanrong2,3,4; Zhu, Runliang2,3,4
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2024-04-20 |
| 卷号 | 922页码:10 |
| 关键词 | Tidal flow constructed wetlands Steel slag Ammonia oxidation Heavy metals Ammonia-oxidizing microorganisms Heterotrophic nitrification-aerobic denitrifica-tion bacteria |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2024.171333 |
| 英文摘要 | Utilizing alkaline solid wastes, such as steel slag, as substrates in tidal flow constructed wetlands (TFCWs) can effectively neutralize the acidity generated by nitrification. However, the impacts of steel slag on microbial communities and the potential risk of heavy metal release remain poorly understood. To address these knowledge gaps, this study compared the performance and microbial community structure of TFCWs filled with a mixture of steel slag and zeolite (TFCW-S) to those filled with zeolite alone (TFCW-Z). TFCW-S exhibited a much higher NH4+-N removal efficiency (98.35 %) than TFCW-Z (55.26 %). Additionally, TFCW-S also achieved better TN and TP removal. The steel slag addition helped maintain the TFCW-S effluent pH at around 7.5, while the TFCW-Z effluent pH varied from 3.74 to 6.25. The nitrification and denitrification intensities in TFCW-S substrates were significantly higher than those in TFCW-Z, consistent with the observed removal performance. Moreover, steel slag did not cause excessive heavy metal release, as the effluent concentrations were below the standard limits. Microbial community analysis revealed that ammonia -oxidizing bacteria, ammonia -oxidizing archaea, and complete ammonia -oxidizing bacteria coexisted in both TFCWs, albeit with different compositions. Furthermore, the enrichment of heterotrophic nitrification -aerobic denitrification bacteria in TFCW-S likely contributed to the high NH4+-N removal. In summary, these findings demonstrate that the combined use of steel slag and zeolite in TFCWs creates favorable pH conditions for ammonia -oxidizing microorganisms, leading to efficient ammonia removal in an environmentally friendly manner. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001208501000001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/77066]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Yang, Yongqiang |
| 作者单位 | 1.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Key Lab Mineral Phys & Mat, 511 Kehua St, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, CAS Key Lab Mineral & Metallogeny, 511 Kehua St, Guangzhou 510640, Peoples R China 4.CAS Ctr Excellence Deep Earth Sci, 511 Kehua St, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Quan,Yu, Xingyu,Yang, Yongqiang,et al. Enhanced ammonia removal in tidal flow constructed wetland by incorporating steel slag: Performance, microbial community, and heavy metal release[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,922:10. |
| APA | Zhang, Quan.,Yu, Xingyu.,Yang, Yongqiang.,Ruan, Jingjun.,Zou, Yuhuan.,...&Zhu, Runliang.(2024).Enhanced ammonia removal in tidal flow constructed wetland by incorporating steel slag: Performance, microbial community, and heavy metal release.SCIENCE OF THE TOTAL ENVIRONMENT,922,10. |
| MLA | Zhang, Quan,et al."Enhanced ammonia removal in tidal flow constructed wetland by incorporating steel slag: Performance, microbial community, and heavy metal release".SCIENCE OF THE TOTAL ENVIRONMENT 922(2024):10. |
入库方式： OAI收割
来源：广州地球化学研究所
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