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| HRT对一体式PTFE膜生物反应器运行效果的影响 | |
| 引用本文： | 徐毅,王占生,杜晓文,刘磊.HRT对一体式PTFE膜生物反应器运行效果的影响[J].中国环境科学,2012,32(12):2192-2198. |
| 作者姓名： | 徐毅 王占生 杜晓文 刘磊 |
| 作者单位： | 1. 环境保护部环境规划院,北京,100012 2. 中国石油集团安全环保技术研究院,北京,100083 3. 华北电力大学区域能源系统优化教育部重点实验室,北京,102206 |
| 基金项目： | 水污染控制与治理重大科技专项，高等学校科技创新工程重大项目培育资金项目 |
| 摘 要： | 针对垃圾渗滤液高COD、高NH4-N,低生化性的特点,开发UASB/缺氧/好氧-膜生物反应器组合处理工艺.在不同水力停留时间(HRT)下,考察了系统对污染物去除效果及其膜污染特性.结果表明,在不同的HRT条件下,UASB/缺氧/好氧-膜生物反应器组合工艺处理垃圾渗滤液出水水质良好且稳定.出水COD除率随HRT的升高先增加后降低,且HRT为12.8h时达到最大值94.96%;系统对NH4-N的平均去除率随HRT的延长而升高; 膜污染实验结果显示: 较低的HRT条件下意味着膜通量较高,会加剧膜污染进程.通过实验得出结论当HRT=15h时,对膜污染的控制最为有利.对膜进行清洗,并进行扫描电镜分析.分析结果显示凝胶层的形成是膜透水性下降的主要原因. |
| 关 键 词： | PTFE膜 膜生物反应器 水力停留时间 膜污染 |
| 收稿时间： | 2012-04-23; |
Effect of hydraulic retention time on the performance of a membrane bioreactor with a PTFE membrane module |
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| XU Yi , WANG Zhan-sheng , DU Xiao-wen , LIU Lei.Effect of hydraulic retention time on the performance of a membrane bioreactor with a PTFE membrane module[J].China Environmental Science,2012,32(12):2192-2198. | |
| Authors: | XU Yi WANG Zhan-sheng DU Xiao-wen LIU Lei |
| Institution: | 1.Chinese Academy for Environmental Planning, Beijing 100012,China;2.Safety and Environmental Protection Technology Research Institute, China National Petroleum Corporation, Beijing 100083, China;3.Key Laboratory of Regiona Energy and Environmental Systems Optimization, Ministry of Education, Resources and Environmental Research Academy, North China Electric Power University, Beijing 102206, China) |
| Abstract: | A pilot-scale UASB/anoxic/aerobic membrane bioreactor was developed and operated for 54 days for landfill leachate treatment. Experiments were conducted to investigate the performance of the system for COD removal, and ammonia nitrogen (NH4-N) removal under hydraulic retention times (HRTs) of 10h, 12.8h, and 15h, respectively. The experimental results showed that the optimal COD removal rate reached at 94.96% under the HRT of 12.8h; while the NH4-N removal rate improved with the increase of HRT; both pollutant removal rates were high and stable, indicating a good performance of the MBR system. Results also indicated that the membrane presented lower fouling as HRT increased, and that the gel layer accumulated on the membrane surface was the key factor that caused membrane fouling. |
| Keywords: | PTFE membrane module membrane bioreactor hydraulic retention time (HRT) membrane fouling |
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