| SMBR系统活性污泥性质对膜污染特征的影响 |
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| 引用本文： | 高彦昌,杨永哲,应京强.SMBR系统活性污泥性质对膜污染特征的影响[J].环境科学学报,2014,34(1):115-120. |
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| 作者姓名： | 高彦昌 杨永哲 应京强 |
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| 作者单位： | 1. 西安建筑科技大学环境与市政工程学院, 西安 710055;2. 太原市市政工程设计研究院, 太原 030002;西安建筑科技大学环境与市政工程学院, 西安 710055;西安建筑科技大学环境与市政工程学院, 西安 710055 |
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| 基金项目： | 高等学校博士学科点专项科研基金（No.20116120110008）；陕西省自然科学基础研究计划重点项目（No.2010JZ008） |
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| 摘 要： | 采用浸没式膜生物反应器(Submerged membrane bioreactor,SMBR),在曝气量300 L·h-1、膜通量15 L·m-2·h-1、抽吸/间歇时间为8 min/2 min的工况下,在缺氧区采用不同搅拌强度运行,研究了活性污泥特性及其对滤饼层特征的影响.试验结果表明,搅拌强度对系统主要水质指标的去除没有明显的影响.但随着搅拌强度的突然增加,会导致活性污泥上清液胶体态物质升高,胞外聚合物由(28.94±9.61)mg·g-1(以VSS计,下同)增加到(52.57±7.98)mg·g-1,膜污染速率增加2.13倍;滤饼层污染引起的跨膜压差(Trans-membrane pressure,TMP)占到总TMP的93.64%以上.
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| 关 键 词： | 活性污泥 浸没式膜生物反应器 滤饼层 胶体 |
| 收稿时间： | 2013/5/12 0:00:00 |
| 修稿时间： | 2013/8/16 0:00:00 |
Effects of activated sludge features on membrane fouling characteristics of SMBR system |
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| GAO Yanchang,YANG Yongzhe and YING Jingqiang.Effects of activated sludge features on membrane fouling characteristics of SMBR system[J].Acta Scientiae Circumstantiae,2014,34(1):115-120. |
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| Authors: | GAO Yanchang YANG Yongzhe and YING Jingqiang |
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| Institution: | 1. School of Environmental and Municipal Engineering, Xi'an University of Architecture & Technology, Xi'an 710055;2. Taiyuan Municipal Engineering Design and Research Institute, Taiyuan 030002;School of Environmental and Municipal Engineering, Xi'an University of Architecture & Technology, Xi'an 710055;School of Environmental and Municipal Engineering, Xi'an University of Architecture & Technology, Xi'an 710055 |
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| Abstract: | Submerged membrane bioreactor (SMBR) was operated under the aeration rate of 300 L·h-1, membrane flux of 15 L·m-2·h-1 and suction-intermittent time ratio of 8min-2min. Characteristics of the activated sludge and its effects on membrane fouling were investigated under different stirring intensities in the anoxic zone of the SMBR. The results show that stirring intensity has insignificant effects on the pollutants removal performance of the SMBR. However, the colloidal substance in the supernatant of activated sludge increased when the stirring intensity increased. The extracellular polymer increased from (28.94±9.61) mg·g-1 to (52.57±7.98) mg·g-1 and membrane fouling rate increased by 2.13 folders. The cake layer based transmembrane pressure (TMP) accounted for 93.64% of the total TMP. |
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| Keywords: | activated sludge submerged membrane bioreactor (SMBR) filter cake layer colloidal substance |
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