应用于Anammox-MBR的尼龙织布亲水改性研究

周慧; 史勤; 王天蓓; 樊宇菲; 王亚宜

PDF(616 KB)

中国环境科学 ›› 2020, Vol. 40 ›› Issue (12) : 5253-5259.

水污染与控制

应用于Anammox-MBR的尼龙织布亲水改性研究

周慧, 史勤, 王天蓓, 樊宇菲, 王亚宜

作者信息 +

Hydrophilic modification of nylon fabric mesh applied in Anammox-MBR

ZHOU Hui, SHI Qin, WANG Tian-bei, FAN Yu-fei, WANG Ya-yi

Author information +

文章历史 +

摘要

采用聚乙烯醇（PVA）对尼龙织布表面涂覆改性，对改性前后织布进行表征并进行纯水通量测试，随后以牛血清蛋白（BSA）模拟污染物测试尼龙织布改性前后的抗污染性能，并对改性后的织布进行溶解性有机碳（DOC）浸出实验.改性过程中，优选3%涂覆浓度和250μm涂层厚度，改性后织布的纯水通量值约提高85.0%，对BSA的截留率由6.0%±0.5%上升至7.2%±0.7%，通量恢复率由90.0%提高到96.1%，可逆污染比重上升，不可逆污染比重下降，污染形式主要表现为可逆污染.为避免改性尼龙织布应用于厌氧氨氧化-膜生物反应器（Anammox-MBR）时对厌氧氨氧化反应产生不可逆危害，提出应对制备完成的改性尼龙织布进行为期3d及以上的静态清水浸泡或动态浸出处理.

Abstract

Nylon fabric mesh was modified via coating polyvinyl alcohol (PVA). The pristine and modified nylon fabric mesh was subjected to different characterizations, and the water permeability was investigated as well. Furthermore, the fouling resistance of nylon fabric mesh was discussed through BSA solution filtration tests. In addition, the leaching of soluble organic carbon (DOC) was evaluated during the application of the modified nylon fabric mesh. In this study, the PVA coating concentration of 3% and coating thickness of 250μm were preferred. After modification, the water flux increased by 85.0%, and the BSA retention rate increased from 6.0%±0.5% to 7.2%±0.7%. Besides, the flux recovery ratio increased from 90.0% to 96.1%. Meanwhile, the reversible fouling ratio and irreversible fouling ratio has risen and fallen respectively, and the main form of pollution was reversible pollution. It should be noted that in order to avoid the increase of DOC in the reaction caused by the leaching of the modified coating, which will cause irreversible harm to the activity of anammox bacteria, it is suggested that the prepared modified nylon fabric mesh should be soaked in water or treated in dynamic leaching for 3days or so before application.

导出引用

周慧, 史勤, 王天蓓, 樊宇菲, 王亚宜. 应用于Anammox-MBR的尼龙织布亲水改性研究[J]. 中国环境科学. 2020, 40(12): 5253-5259

ZHOU Hui, SHI Qin, WANG Tian-bei, FAN Yu-fei, WANG Ya-yi. Hydrophilic modification of nylon fabric mesh applied in Anammox-MBR[J]. China Environmental Science. 2020, 40(12): 5253-5259

中图分类号： X703.1

参考文献

[1] van der Star W R L, Miclea A I, van Dongen U, et al. The membrane bioreactor:A novel tool to grow anammox bacteria as free cells[J]. Biotechnology and Bioengineering, 2008,101(2):286-294.
[2] Wang T, Zhang H M, Gao D W, et al. Comparison between MBR and SBR on Anammox start-up process from the conventional activated sludge[J]. Bioresource Technology, 2012,122:78-82.
[3] Hu Y S, Wang X C C, Yu Z Z, et al. New insight into fouling behavior and foulants accumulation property of cake sludge in a full-scale membrane bioreactor[J]. Journal of Membrane Science, 2016,510:10-17.
[4] Niu Z, Zhang Z, Liu S, et al. Discrepant membrane fouling of partial nitrification and anammox membrane bioreactor operated at the same nitrogen loading rate[J]. Bioresource Technology, 2016,214:729-736.
[5] Meng F, Zhang S, Oh Y, et al. Fouling in membrane bioreactors:An updated review[J]. Water Research, 2017,114:151-180.
[6] Charfi A, Ben Amar N, Harmand J. Analysis of fouling mechanisms in anaerobic membrane bioreactors[J]. Water Research, 2012,46(8):2637-2650.
[7] 刘清华,朱奕静,曹丽娟,等.膜生物反应器PVDF膜和尼龙膜污染特性[J]. 中国环境科学, 2020,40(3):1089-1096. Liu Q H, ZHU Y J, Cao Y J, et al. Membrane fouling characteristics of PVDF membrane and nylon mesh in Anammox-MBRs[J]. China Environmental Science, 2020,40(3):1089-1096.
[8] Meng F G, Chae S R, Drews A, et al. Recent advances in membrane bioreactors (MBRs):Membrane fouling and membrane material[J]. Water Research, 2009,43(6):1489-1512.
[9] Hou X, Liu S, Zhang Z. Role of extracellular polymeric substance in determining the high aggregation ability of anammox sludge[J]. Water Research, 2015,75:51-62.
[10] Chen W J, Su Y L, Peng J M, et al. Efficient Wastewater Treatment by Membranes through Constructing Tunable Antifouling Membrane Surfaces[J]. Environmental Science & Technology, 2011,45(15):6545-6552.
[11] 魏书静,黄赟,查刘生.改善聚乙烯醇薄膜耐水性的研究进展[J]. 化工进展, 2017,36(7):2540-2546. Wei S J, Huang Y, Zha L S. Research progress on improving water-resistance of poly (vinyl alcohol) film.[J]. Chemical Industry and Engineering Progress, 2017,36(7):2540-2546.
[12] Du J R, Peldszus S, Huck P M, et al. Modification of poly(vinylidene fluoride) ultrafiltration membranes with poly(vinyl alcohol) for fouling control in drinking water treatment[J]. Water Research, 2009,43(18):4559-4568.
[13] Gohil J M, Ray P. Polyvinyl alcohol as the barrier layer in thin film composite nanofiltration membranes:preparation, characterization, and performance evaluation[J]. Journal of Colloid and Interface Science, 2009,338(1):121-127.
[14] Zhang L, Okabe S. Rapid cultivation of free-living planktonic anammox cells[J]. Water Research, 2017,127:204-210.
[15] Zhang Q, Zhang C, Xu J, et al. Effect of poly(vinyl alcohol) coating process conditions on the properties and performance of polyamide reverse osmosis membranes[J]. Desalination, 2016,379:42-52.
[16] Zhang Y, Wan Y, Pan G Y, et al. Surface modification of polyamide reverse osmosis membrane with sulfonated polyvinyl alcohol for antifouling[J]. Applied Surface Science, 2017,419:177-187.
[17] 薛娟琴,王森,韩小龙,等.氧化石墨烯改性PVDF超滤膜制备及分离性能[J]. 化工学报, 2017,68(9):3466-3473. Xue J Q, Wang S, Han X L, et al. Prepartion and separation performance of GO modified PVDF ultrafiltration membrane[J]. CIESC Journal, 2017,68(9):3466-3473.
[18] Zhang J, Xu W R, Zhang Y, et al. Liquefied chitin/polyvinyl alcohol based blend membranes:Preparation and characterization and antibacterial activity[J]. Carbohydrate Polymers, 2018,180:175-181.
[19] 陈颖青,文越,吴志超,等.基于HBPs接枝的PVDF膜亲水改性及抗污染性能[J]. 中国环境科学, 2019,39(9):3736-3743. Chen Y Q, Wen Y, Wu Z C, et al. Hydrophilic modification of PVDF membrane based on HPBs and its antifouling properties[J]. China Environmental Science, 2019,39(9):3736-3743.
[20] Qin A, Li X, Zhao X, et al. Engineering a highly hydrophilic PVDF membrane via binding TiO₂ nanoparticles and a PVA layer onto a membrane surface[J]. ACS Appl Mater Interfaces, 2015,7(16):8427-8436.
[21] 国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法(第4版)(增补版)[M]. 北京:中国环境科学出版社, 2002. Editorial Board of the State Environmental Protection Administration of China "Water and Wastewater Monitoring and Analysis Method". Water and wastewater monitoring and analysis method (4th edition)[M]. Beijing:China Environmental Science Press, 2002.
[22] Du W, Jiang L, Shi M, et al. The modification mechanism and the effect of magnesium chloride on poly(vinyl alcohol) films[J]. RSC Advances, 2019,9(3):1602-1612.
[23] Le-Clech P, Chen V, Fane T A G. Fouling in membrane bioreactors used in wastewater treatment[J]. Journal of Membrane Science, 2006,284(1/2):17-53.
[24] Huang L, Arena J T, MANICKAM S S, et al. Improved mechanical properties and hydrophilicity of electrospun nanofiber membranes for filtration applications by dopamine modification[J]. Journal of Membrane Science, 2014,460:241-249.
[25] Carey D H G S J, FERGUSON G S. Entropically Influenced Reconstruction at the PBD-ox/Water Interface:The Role of Physical Cross-Linking and Rubber Elasticity[J]. Macromolecules, 2000, 33(23):8802-8812.
[26] 黄礼超,李方,杜春慧,等.聚醚砜超滤膜接枝聚乙烯醇-氨基酸共聚物的亲水改性研究[J]. 环境科学学报, 2014,34(5):1212-1219. Huang L C, Li F, Du C H, et al. Hydrophilic modification of polyethersulfone ultrafiltration membrane by grafting polyvinyl alcohol-amino acid copolymer[J]. Acta Scientiae Cirumstantiae, 2014, 34(5):1212-1219.
[27] 张志伟,徐斌,张毅敏,等.GO-TiO₂改性PVDF复合膜去除微污染水体中氨氮[J]. 中国环境科学, 2019,39(6):2395-2401. Zhang Z W, Xu B, Zhang Y M, et al. Removal of ammonia nitrogen from micro-polluted water by GO-TiO₂ modified PVDF composite membrane[J]. China Environmental Science, 2019,39(6):2395-2401.
[28] Liu C, Lee J, Ma J, et al. Antifouling Thin-Film Composite Membranes by Controlled Architecture of Zwitterionic Polymer Brush Layer[J]. Environmental Science & Technology, 2017,51(4):2161-2169.
[29] Ni S Q, Ni J Y, Hu D L, et al. Effect of organic matter on the performance of granular anammox process[J]. Bioresource Technology, 2012,110:701-705.
[30] Cao Y, van Loosdrecht M C, Daigger G T. Mainstream partial nitritation-anammox in municipal wastewater treatment:status, bottlenecks, and further studies[J]. Applied Microbiology and Biotechnology, 2017,101(4):1365-1383.
[31] Jin R C, Yu J J, Ma C, et al. Transient and long-term effects of bicarbonate on the ANAMMOX process[J]. Applied Microbiology and Biotechnology, 2014,98(3):1377-1388.
[32] Aktan C K, Yapsakli K, Mertoglu B. Inhibitory effects of free ammonia on Anammox bacteria[J]. Biodegradation, 2012,23(5):751-762.
[33] Jin R C, Yang G F, Yu J J, et al. The inhibition of the Anammox process:A review[J]. Chemical Engineering Journal, 2012,197:67-79