Effects of phase separation on dewaterability promotion and heavy metal removal of sewage sludge during bioleaching
文献类型：期刊论文
| 作者 | Lu, Yulan1; Wu, Rongjun1; Zhang, Jun1; Liu, Hongtao2 ; Dai, Yu1
|
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2021-10-02 |
| 页码 | 12 |
| 关键词 | Biosolids Sludge pretreatment Dewatering Two-phase Baffled-flow bioreactor Acidithiobacillus spp |
| ISSN号 | 0944-1344 |
| DOI | 10.1007/s11356-021-16630-3 |
| 通讯作者 | Zhang, Jun(zjun@glut.edu.cn) |
| 英文摘要 | Bioleaching is of increasing interest because of its high efficiency in improving sludge dewaterability and removing heavy metals from sewage sludge. However, in traditional single-phase bioleaching, a high-efficiency level cannot be maintained continuously, wherein the microbial synergistic effect is disrupted at a low pH environment. Therefore, in this study, a series of multi-compartment-baffled flow trials were performed to assess the effects of phase separation on sludge bioleaching by comparing a two-phase trial with two single-phase trials. Energy substrate and part of the bioleached sludge were introduced separately into two compartments to form two phases, namely selection phase and bioleaching phase. The results show that phase separation apparently shortened the start-up duration of sludge bioleaching from 7 days in a single-phase bioleaching to 4 days in two-phase bioleaching. The dewaterability of bioleached sludge was also enhanced by phase separation with relative decreases of 25.0-33.3% for specific resistance to filtration and 14.2% for capillary suction time, which was attributed to lower pH values, zeta potential closer to zero, and less dissolved organic matter in bioleached sludge after two-phase bioleaching. Phase separation generally increased the removal ratios of heavy metals during sludge bioleaching by -0.79 to 2.60%, 11.06 to 15.04%, 4.45 to 11.03%, 17.98 to 23.46%, 7.20 to 9.28%, -9.22 to -2.46%, and -6.72 to -10.68% for As, Cd, Cr, Cu, Ni, Pb, and Zn, respectively. Phase separation also enriched the Acidithiobacillus spp. and reduced the inactivation of acid-tolerant fungi, which can be conducive to better synergistic effect, and therefore maintain long-term stable state in the bioleaching phase of the two-phase bioleaching process. |
| WOS关键词 | EXTRACELLULAR POLYMERIC SUBSTANCES ; ACTIVATED-SLUDGE ; ACIDITHIOBACILLUS-FERROOXIDANS ; OXIDATION ; FEASIBILITY ; REACTOR ; ENERGY |
| 资助项目 | National Natural Science Foundation of China[51868011] ; Department of Science and Technology of Guangxi[2018GXNSFGA281001] ; Special Fund for Guangxi Distinguished Experts |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000702634600002 |
| 出版者 | SPRINGER HEIDELBERG |
| 资助机构 | National Natural Science Foundation of China ; Department of Science and Technology of Guangxi ; Special Fund for Guangxi Distinguished Experts |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/165930]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhang, Jun |
| 作者单位 | 1.Guilin Univ Technol, Guangxi Key Lab Environm Pollut Control Theory &, 12 Jiangan Rd, Guilin 541004, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, 11A Datun Rd, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Yulan,Wu, Rongjun,Zhang, Jun,et al. Effects of phase separation on dewaterability promotion and heavy metal removal of sewage sludge during bioleaching[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2021:12. |
| APA | Lu, Yulan,Wu, Rongjun,Zhang, Jun,Liu, Hongtao,&Dai, Yu.(2021).Effects of phase separation on dewaterability promotion and heavy metal removal of sewage sludge during bioleaching.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,12. |
| MLA | Lu, Yulan,et al."Effects of phase separation on dewaterability promotion and heavy metal removal of sewage sludge during bioleaching".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2021):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。