| 曹宏杰,乔森,周集体.PVDF-DCOIT复合中空纤维膜制备与抗污染性能研究[J].,2020,60(2):111-118 |
| PVDF-DCOIT复合中空纤维膜制备与抗污染性能研究 |
| Preparation and antifouling performance study of PVDF-DCOIT composite hollow fiber membrane |
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| DOI：10.7511/dllgxb202002001 |
| 中文关键词:膜生物反应器PVDF-DCOIT复合中空纤维膜4，5-二氯-N-辛基-4-异噻唑啉-3-酮(DCOIT)抗污染性能 |
| 英文关键词:membrane bioreactor (MBR)PVDF-DCOIT composite hollow fiber membrane4,5-dichloro-N-octyl-4-isothiazolin-3-one (DCOIT)antifouling performance |
| 基金项目:国家自然科学基金资助项目(21677026)；中央高校基本科研业务费专项资金资助项目(DUT17LAB15)；高等学校学科创新引智计划资助项目(B13012). |
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| 中文摘要: |
| 将有机杀菌剂4，5-二氯-N-辛基-4-异噻唑啉-3-酮(DCOIT)以适当浓度物理共混于聚偏氟乙烯(PVDF)中来制备一种新型的抗污染膜．实验表明，DCOIT含量为3%的PVDF-DCOIT复合中空纤维膜具有最佳性能．相比PVDF膜，PVDF-DCOIT复合中空纤维膜亲水性和纯水通量分别提升了22.9%和64.6%．SEM、EDS和AFM表征分析也反映出更好的表面形貌和更加光滑的膜表面，这些因素都有利于膜污染的缓解．在抗污染实验中，添加DCOIT后牛血清白蛋白、海藻酸钠和腐殖酸对膜表面的污染降低了26%、120%和74%；而在厌氧污泥中PVDF-DCOIT复合中空纤维膜的通量恢复效率也提高了39%． |
| 英文摘要: |
| Organic biocide 4,5-dichloro-N-octyl-4-isothiazolin-3-one (DCOIT) is physically blended with polyvinylidene fluoride (PVDF) in proper concentration to explore the preparation of novel antifouling membrane. The experimental results show that the PVDF-DCOIT composite hollow fiber membrane with 3% DCOIT has the optimum comprehensive performance. Compared with PVDF membrane, the hydrophilicity and pure water flux of the PVDF-DCOIT composite hollow fiber membranes are improved by 22.9% and 64.6%, respectively. The characteristics of SEM, EDS and AFM also show that the PVDF-DCOIT composite hollow fiber membranes have better morphologies and smoother surface, which are beneficial to the alleviation of membrane fouling. In the antifouling experiments, the membrane fouling quantities of PVDF-DCOIT composite hollow fiber membranes in bovine serum albumin (BSA), sodium alginate (SA) and humic acid (HA) are reduced by 26%, 120% and 74%. Moreover, the flux recovery efficiency of PVDF-DCOIT composite hollow fiber membranes in anaerobic sludges is also increased by 39%. |
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