Hydraulic method of controlling solids retention time in step-feed biological nitrogen removal process
文献类型：期刊论文
| 作者 | Zhu, Guibing; Peng, Yongzhen; Wang, Shuying |
| 刊名 | ENVIRONMENTAL ENGINEERING SCIENCE
 |
| 出版日期 | 2007-10 |
| 卷号 | 24期号:8页码:1112-1121 |
| 关键词 | activated sludge biological nitrogen removal hydraulic method solids retention time step-feeding process wastewater treatment |
| 英文摘要 | Controlling of solids retention time (SRT) in the activated sludge process is critical for ensuring effective wastewater treatment. Because of the disadvantages of conventional control methods, the hydraulic method of controlling SRT was improved in this study and applied into the step-feed biological nitrogen removal process. After the application of the hydraulic control method, conventional SRT changed from 17.67 to 19.08 days and hydraulic SRT was constant at a desired 20 days. Hydraulic control of SRT simplified process control, and produced good effluent quality where the total nitrogen removal efficiency with four stages ascended from 72.6 to 85%. Variations of hydraulic SRT under different influent wastewater strength and flow rates were investigated, and the results showed that a relative constant SRT value could be maintained easily. The feasibilities of applying the hydraulic method of controlling SRT in step-feed biological nitrogen removal process with different operational modes, including different stage numbers processes, different influent flow rate distributions, and volumes in each stage and different volume ratios of the anoxic zone to the aerobic in each stage, were verified and the results were satisfactory. Under constant SRT the total nitrogen removal efficiency of the step-feeding process with three, four, and five stages was 80, 85, and 95%, respectively. |
| WOS记录号 | WOS:000250234000014 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22563]  |
| 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 | Zhu, Guibing,Peng, Yongzhen,Wang, Shuying. Hydraulic method of controlling solids retention time in step-feed biological nitrogen removal process[J]. ENVIRONMENTAL ENGINEERING SCIENCE,2007,24(8):1112-1121. |
| APA | Zhu, Guibing,Peng, Yongzhen,&Wang, Shuying.(2007).Hydraulic method of controlling solids retention time in step-feed biological nitrogen removal process.ENVIRONMENTAL ENGINEERING SCIENCE,24(8),1112-1121. |
| MLA | Zhu, Guibing,et al."Hydraulic method of controlling solids retention time in step-feed biological nitrogen removal process".ENVIRONMENTAL ENGINEERING SCIENCE 24.8(2007):1112-1121. |
入库方式： OAI收割
来源：生态环境研究中心
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