Operation performance of an A/A/O process coupled with excess sludge ozonation and phosphorus recovery: A pilot-scale study
文献类型：期刊论文
| 作者 | Qiang, Zhimin; Wang, Lu; Dong, Huiyu; Qu, Jiuhui |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2015-05-15 |
| 卷号 | 268期号:0页码:162-169 |
| 关键词 | Anaerobic/anoxic/oxic process Sludge ozonation Phosphorus recovery Operation performance Pilot-scale |
| 英文摘要 | This study investigated the long-term operation performance of an anaerobic/anoxic/oxic (A/A/O) process coupled with sludge ozonation and phosphorus (P) recovery at pilot scale with a treatment capacity of 1.0 m(3) d(-1). Batch experiments of sludge ozonation showed that the release of organic substances (expressed as chemical oxygen demand (COD)), nitrogen (N), and P from disintegrated microbial cells was enhanced with an increasing ozone dose. The optimal ozone dose was about 100 mg g(-1) MLSS (mixed liquor suspended solids), at which a sludge solubilization efficiency of 35.5% was achieved. The pilot-scale treatment system was continuously operated for 141 days and a maximum sludge reduction efficiency of 85% was reached. Ozonated sludge recycle (OSR) affected slightly the COD and N removal, mixed liquor volatile suspended solids to MISS ratio, and sludge activity in the bioreactor, and significantly improved the sludge settleability. However, P removal was obviously inhibited because of the reduced discharge of excess sludge. The mass balances of COD and N indicated that OSR improved both organic mineralization and denitrification. The influent P could be recovered by 29% from the supernatant of ozonated sludge, thus notably enhancing its removal in the pilot-scale treatment system. This study demonstrates the operational feasibility of the A/A/O process coupled with excess sludge reduction by ozone and P recovery. (C) 2015 Elsevier B.V. All rights reserved. |
| 研究领域[WOS] | Engineering, Environmental ; Engineering, Chemical |
| WOS记录号 | WOS:000352247100019 |
| 公开日期 | 2016-03-15 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/32815]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Qiang, Zhimin,Wang, Lu,Dong, Huiyu,et al. Operation performance of an A/A/O process coupled with excess sludge ozonation and phosphorus recovery: A pilot-scale study[J]. CHEMICAL ENGINEERING JOURNAL,2015,268(0):162-169. |
| APA | Qiang, Zhimin,Wang, Lu,Dong, Huiyu,&Qu, Jiuhui.(2015).Operation performance of an A/A/O process coupled with excess sludge ozonation and phosphorus recovery: A pilot-scale study.CHEMICAL ENGINEERING JOURNAL,268(0),162-169. |
| MLA | Qiang, Zhimin,et al."Operation performance of an A/A/O process coupled with excess sludge ozonation and phosphorus recovery: A pilot-scale study".CHEMICAL ENGINEERING JOURNAL 268.0(2015):162-169. |
入库方式： OAI收割
来源：生态环境研究中心
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