| 引用本文: | 常海庆,梁恒,贾瑞宝,瞿芳术,高伟,余华荣,纪洪杰,李圭白.水动力条件对MBR中超滤膜不可逆污染的影响[J].哈尔滨工业大学学报,2014,46(12):20.DOI:10.11918/j.issn.0367-6234.2014.12.004 |
| CHANG Haiqing,LIANG Heng,JIA Ruibao,QU Fangshu,GAO Wei,YU Huarong,JI Hongjie,LI Guibai.Effect of hydrodynamic conditions on hydraulically irreversible fouling of UF membrane in MBR[J].Journal of Harbin Institute of Technology,2014,46(12):20.DOI:10.11918/j.issn.0367-6234.2014.12.004 |
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| 水动力条件对MBR中超滤膜不可逆污染的影响 |
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常海庆1, 梁恒1, 贾瑞宝2, 瞿芳术1, 高伟3, 余华荣1, 纪洪杰4, 李圭白1
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(1.城市水资源与水环境国家重点实验室(哈尔滨工业大学), 150090 哈尔滨; 2.济南市供排水监测中心, 250021 济南; 3.住房和城乡建设部城乡规划管理中心, 100835 北京; 4.东营市自来水公司, 257091 山东 东营)
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| 摘要: |
| 为考察MBR处理微污染水过程中水动力条件对超滤膜水力不可逆污染的影响,介绍了水力不可逆膜污染的计算方法,探讨曝气、反冲洗、通量、水温等运行参数的影响并进行优化．结果表明:间歇曝气时,曝气时间、强度及反冲洗时间的选取需考虑MBR的净水效能,实验条件下,2 min的曝气时间是必需的,较优的曝气强度为30～36 m3／(m2·h);较长的反冲洗时间有利于控制膜的不可逆污染,反冲洗时间的确定尚需考虑超滤系统的产水率;过滤通量显著影响超滤膜的不可逆污染速率,PVDF、PVC膜的过滤通量分别不应高于31.5,4.0 L／(m2·h),长期运行中膜污染的评价尚需考虑温度的影响． |
| 关键词: 超滤膜 水力不可逆污染 曝气 反冲洗 通量 水温 |
| DOI：10.11918/j.issn.0367-6234.2014.12.004 |
| 分类号:TU991.2 |
| 基金项目:国家水专项(2012ZX07404-003-004);山东省博士后创新项目(201203001). |
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| Effect of hydrodynamic conditions on hydraulically irreversible fouling of UF membrane in MBR |
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CHANG Haiqing1, LIANG Heng1, JIA Ruibao2, QU Fangshu1, GAO Wei3, YU Huarong1, JI Hongjie4, LI Guibai1
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(1.State Key Laboratory of Urban Water Resource and Environment(Harbin Institute of Technology),150090 Harbin, China; 2.Ji’nan Water ＆ Wastewater Monitoring Center, 250021 Ji’nan, China; 3. The Administration Center of Urban-Rural Planning, Ministry of Housing and Urban-Rural Development of P.R.China, 100835 Beijing, China; 4. Dongying Water Supply Company, 257091 Dongying, Shandong, China)
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| Abstract: |
| To investigate the effect of hydrodynamic conditions on hydraulically irreversible fouling of UF membrane in MBR for treating micro-polluted water, the method of determination of hydraulically irreversible fouling of UF membrane was introduced, and the effects of aeration, backwashing, flux and temperature on irreversible fouling were discussed. The results showed that the pollutant removal of MBR should be taken into account when selecting the time and flow of aeration. The duration of 2 min was necessary during intermittent aeration, with the optimal aeration intensity of 30-36 m3／(m2·h). Prolonged backwashing duration was found to control the hydraulically irreversible fouling. The production of UF membrane in MBR should also be considered when determining the proper backwashing duration. The permeate fluxes influenced the hydraulically irreversible fouling rate significantly, and the values of PVDF and PVC membranes should be no more than 31.5 and 14.0 L／(m2·h) to maintain the long-term stable operation. Meanwhile, the impact of temperature on irreversible fouling should be considered. |
| Key words: ultrafiltration hydraulically irreversible fouling aeration backwashing flux temperature |
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