| 玻璃纤维编织管覆膜改性及其动态膜生物反应器研究 |
| 摘要点击 1353 全文点击 1056 投稿时间：2008-09-22 修订日期：2008-11-24 |
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| 中文关键词 玻纤编织管；动态膜生物反应器；覆膜改性；膜组件；膜通量；跨膜压差 膜清洗 |
| 英文关键词 glass fiber dynamic membrane bioreactor the modification of covering with the organic membrane solution membrane module membrane flux trans-membrane pressure membrane cleaning |
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| 中文摘要 |
| 对玻璃纤维编织管进行了覆膜改性, 并依托于玻璃纤维编织管开发了一种新型的栅式膜组件及其动态膜生物反应器.研究表明，覆膜改性前，玻纤编织管动态膜组件的稳定通量仅为4 L/(m2·h)，跨膜压差为0.02 MPa；覆膜改性后，玻纤编织管动态膜组件的膜通量可达到16 L/(m2·h)，跨膜压差为0.01 MPa；经过水力清洗和碱洗后再次运行，膜通量可达到17.1 L/(m2·h)，而跨膜压差最低仅为0.003 MPa.覆膜膜液浓度为1∶4时反应器在膜通量为14.29 L/(m2·h) 时稳定运行长达51 d.按阻力增长速率计算，膜通量可保持稳定运行275 d左右.同时出水效果良好，COD和ＮＨ+4-Ｎ的处理效果平均值分别为81.96%和83.66%，其中动态膜的去除率分别为21.01%和3.61%.此外，覆膜改性的玻纤编织管估算价格约为40～60 元/m2，低于传统有机膜. |
| 英文摘要 |
| A novel grille form complex membrane module composed of glass fiber covered with organic membrane and the dynamic membrane bioreactor (DMBR) with this complex membrane were studied. The results showed that the flux of the dynamic membrane of glass fiber tube without covering with organic membrane solution was only 4 L/(m2·h) at a trans-membrane pressure(TMP) of 0.02 MPa. After the modification of covering with the organic membrane solution, the complex dynamic membrane flux could reach to a level of 16 L/(m2·h) at a TMP of 0.01 MPa in operation, and after a hydraulic and chemical cleaning, the membrane flux was up to 17.1 L/(m2·h) at a lower TMP of 0.003 MPa. When the glass fiber tube was coated with a membrane solution with a concentration of 1∶4 (membrane materials/solution in volume ratio), the flux of the complex membrane worked steadily at 14.29 L/(m2·h) more than 51 days, and according to calculation by TMP rising, the flux could maintain for almost 275 d. The average removal rates of COD and ＮＨ+4-Ｎ were 81.96% and 83.66% respectively by the DMBR, and that were 21.01% and 3.61% only by the complex dynamic membrane. Moreover, the cost of complex membrane was approximately 40-60 yuan/m2, which was lower than the traditional organic membrane. |
