An enhanced rural anoxic/oxic biological contact oxidation process with air-lift reflux technique to strengthen total nitrogen removal and reduce sludge generation
文献类型：期刊论文
| 作者 | Zheng, Tianlong ; Xiong, Ren; Li, Wenkai; Wu, Wenjun; Ma, Yingqun; Li, Pengyu; Guo, Xuesong
|
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2022-05-10 |
| 卷号 | 348期号:0页码:131371 |
| 关键词 | WASTE-WATER TREATMENT MICROBIAL COMMUNITY PERFORMANCE REACTOR NITRIFICATION OPERATION CARBON |
| ISSN号 | 0959-6526 |
| 英文摘要 | Biological contact oxidation process is attractive and widely used in rural sewage treatment, due to its simplicity and relatively superior pollutants elimination efficiency. However, the effluent total nitrogen (TN) and excess sludge yield during the biological contact oxidation process still need to be intensified to stably satisfy the discharge standard. In the current study, an enhanced rural anoxic/oxic (A/O) biological contact oxidation process with air-lift reflux technique was properly established, which achieved better pollutant removal efficiency and lower excess sludge yield. Under the pathway of air-lift reflux technique, the TN and ammonia nitrogen (AN) removal capacity of A/O biological contact oxidation process were obviously increased from 66.5% and 73.8% to 95.3% and 80.6%, respectively, which should be attributed to the increasement of nitrifying bacteria (Nitrospira and Nitrosomonas) and denitrifying bacteria (Denitratisoma, Thauera, and Dechloromonas). The excess sludge yield was also decreased from 0.19 kg MLSS/kg COD (no reflux model) to 0.11 kg MLSS/kg COD (air-lift reflux model) since the degradation of returned oxic sludge in the anoxic tank, which was verified by stable isotope tracer analysis. The rural A/O biological contact oxidation process with air-lift reflux technique had great potential to strengthen TN removal and reduce sludge generation, which could provide a useful and easy-implement technology for rural sewage treatment. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47383]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 通讯作者 | Guo, Xuesong |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, 18 Shuangqing Rd, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China 3.Yueyang Planning Survey & Design Inst Co Ltd, Hubin Sub Dist Off, Bldg A3, Yueyang 414000, Hunan, Peoples R China 4.SCEGC 12 Construct Engn Grp Co Ltd, Ankang 725000, Shaanxi, Peoples R China 5.Chinese Acad Environm Planning, State Environm Protect Key Lab Environm Planning, 8 Dayangfang, |
| 推荐引用方式 GB/T 7714 | Zheng, Tianlong,Xiong, Ren,Li, Wenkai,et al. An enhanced rural anoxic/oxic biological contact oxidation process with air-lift reflux technique to strengthen total nitrogen removal and reduce sludge generation[J]. JOURNAL OF CLEANER PRODUCTION,2022,348(0):131371. |
| APA | Zheng, Tianlong.,Xiong, Ren.,Li, Wenkai.,Wu, Wenjun.,Ma, Yingqun.,...&Guo, Xuesong.(2022).An enhanced rural anoxic/oxic biological contact oxidation process with air-lift reflux technique to strengthen total nitrogen removal and reduce sludge generation.JOURNAL OF CLEANER PRODUCTION,348(0),131371. |
| MLA | Zheng, Tianlong,et al."An enhanced rural anoxic/oxic biological contact oxidation process with air-lift reflux technique to strengthen total nitrogen removal and reduce sludge generation".JOURNAL OF CLEANER PRODUCTION 348.0(2022):131371. |
入库方式： OAI收割
来源：生态环境研究中心
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