Sludge reduction using aquatic worms under different aeration regimes
文献类型：期刊论文
| 作者 | Cai, Lu1; Gao, Ding2 ; Wang, Kan1; Liu, Hong-tao2; Wan, Xiao-ming2
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| 刊名 | ENVIRONMENTAL TECHNOLOGY
 |
| 出版日期 | 2017 |
| 卷号 | 38期号:6页码:737-743 |
| 关键词 | Aeration aquatic worms dissolved oxygen sludge reduction wastewater treatment |
| ISSN号 | 0959-3330 |
| DOI | 10.1080/09593330.2016.1210241 |
| 通讯作者 | Cai, Lu(cailu@nbu.edu.cn) |
| 英文摘要 | Adding aquatic worms to a wastewater treatment system can reduce sludge production through predation. The aeration level is crucial for success. To evaluate aeration impacts on sludge reduction and determine an optimal aeration regime, this study investigated the processes of in-situ sludge reduction, using aquatic worms exposed to different aeration levels. The experiment also compared treatment results between a conventional reactor and an aquatic worm reactor (WR). Results indicated that the recommended concentration of dissolved oxygen (DO) was 2.5 mg L-1. The removal rate of chemical oxygen demand remained steady at 80% when the DO concentration was higher than 2.5 mg L-1, while the removal rate of ammonia nitrogen continued to moderately increase. Increasing the DO concentration to 5 mg L-1 did not improve sludge reduction, and consumed more power. With a DO concentration of 2.5 mg L-1 and a power of 0.19 kWh t(-1) water, the absolute sludge reduction and relative sludge reduction rates in the WR were 60.0% and 45.7%, respectively, and the daily aquatic worm growth rate was 0.150 d(-1) during the 17-d test. Therefore, at the recommended aeration regime, aquatic worms reduced the sludge without increasing the power consumption or deteriorating the effluent. |
| WOS关键词 | MICROBIAL COMMUNITY STRUCTURE ; MEMBRANE BIOREACTOR ; WASTE SLUDGE ; LARGE-SCALE ; PERFORMANCE ; REACTOR ; EVAPORATION ; PREDATION |
| 资助项目 | Zhejiang Provincial Natural Science Foundation of China[LQ14D010001] ; National Natural Science Fundation of China[41401538] ; Wong Magna Fund in Ningbo University |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000396790600010 |
| 出版者 | TAYLOR & FRANCIS LTD |
| 资助机构 | Zhejiang Provincial Natural Science Foundation of China ; National Natural Science Fundation of China ; Wong Magna Fund in Ningbo University |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/64843]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Cai, Lu |
| 作者单位 | 1.Ningbo Univ, Fac Architectural & Environm, Fac Civil Engn & Environm, 818 Fenghua Rd, Ningbo 315211, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Lu,Gao, Ding,Wang, Kan,et al. Sludge reduction using aquatic worms under different aeration regimes[J]. ENVIRONMENTAL TECHNOLOGY,2017,38(6):737-743. |
| APA | Cai, Lu,Gao, Ding,Wang, Kan,Liu, Hong-tao,&Wan, Xiao-ming.(2017).Sludge reduction using aquatic worms under different aeration regimes.ENVIRONMENTAL TECHNOLOGY,38(6),737-743. |
| MLA | Cai, Lu,et al."Sludge reduction using aquatic worms under different aeration regimes".ENVIRONMENTAL TECHNOLOGY 38.6(2017):737-743. |
入库方式： OAI收割
来源：地理科学与资源研究所
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