耦合微滤膜的正渗透膜生物反应器的构建及其运行性能

赵艳晓; 王新华; 李秀芬

doi:10.12030/j.cjee.201601071

环境工程学报

耦合微滤膜的正渗透膜生物反应器的构建及其运行性能

, ,

赵艳晓, 王新华, 李秀芬. 耦合微滤膜的正渗透膜生物反应器的构建及其运行性能[J]. 环境工程学报, 2017, 11(4): 1981-1986. doi: 10.12030/j.cjee.201601071

引用本文:

赵艳晓, 王新华, 李秀芬. 耦合微滤膜的正渗透膜生物反应器的构建及其运行性能[J]. 环境工程学报, 2017, 11(4): 1981-1986. doi: 10.12030/j.cjee.201601071

ZHAO Yanxiao, WANG Xinhua, LI Xiufen. Performance of a novel osmotic membrane bioreactor integrating with microfiltration membrane for municipal wastewater treatment[J]. Chinese Journal of Environmental Engineering, 2017, 11(4): 1981-1986. doi: 10.12030/j.cjee.201601071

Citation:

ZHAO Yanxiao, WANG Xinhua, LI Xiufen. Performance of a novel osmotic membrane bioreactor integrating with microfiltration membrane for municipal wastewater treatment[J]. Chinese Journal of Environmental Engineering, 2017, 11(4): 1981-1986. doi: 10.12030/j.cjee.201601071

耦合微滤膜的正渗透膜生物反应器的构建及其运行性能

1.
江南大学环境与土木工程学院, 无锡 214122
2.
江苏省厌氧生物技术重点实验室, 无锡 214122
3.
江苏省水处理技术与材料协同创新中心, 无锡 214122
基金项目:
国家自然科学基金资助项目（21107035）
中图分类号: X703

Performance of a novel osmotic membrane bioreactor integrating with microfiltration membrane for municipal wastewater treatment

1.
School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
2.
Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi 214122, China
3.
Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, Wuxi 214122, China
Fund Project:

摘要: 针对目前正渗透膜生物反应器（OMBR）存在的盐度积累问题，借助微滤（MF）膜允许溶解性盐透过的特性，开发了基于MF和正渗透（FO）技术的新型膜生物反应器（MFO-MBR）。实验以MFO-MBR为依托，选取性能优良的聚酰胺（TFC）材质的FO膜，考察工艺处理模拟生活污水过程中的运行性能。结果表明，由于MF的引入，MFO-MBR的盐度被控制在1.7 mS·cm-1左右。正是由于MFO-MBR中的低盐度环境，FO膜的通量得到了提升，最终稳定在6.5 LMH左右。虽然MF的出水劣于FO膜的出水，但是可以直接用作城市杂用水，而FO膜出水中TOC和NH4+-N的去除率分别高达96%和98%。TFC污染膜面含有总细胞、蛋白质、ɑ-D-吡喃多糖及β-D-吡喃多糖等有机和生物污染物，且以微生物和蛋白质为主。盐度积累导致的渗透压差的减小是常规OMBR通量衰减的主要原因，而膜污染尤其外部污染则是MFO-MBR通量衰减的主因。
- 微滤 /
- 正渗透 /
- 聚酰胺复合薄膜 /
- 盐累积 /
- 膜污染
Abstract: In order to alleviate salt accumulation in an osmotic membrane bioreactor (OMBR), this study proposed the use of a microfiltration (MF) membrane integrated into an OMBR for solute discharge, along with a novel MBR that simultaneously combined MF and FO membranes (MFO-MBR). Herein, a thin-film composite polyamide (TFC) membrane was applied in an MFO-MBR for treating synthetic wastewater, instead of the commonly used cellulose triacetate (CTA) membrane, due to its superior properties. The results indicated that the salinity could be effectively controlled at about 1.7 mS·cm-1 in the MFO-MBR due to the MF membrane. The lower salinity in the MFO-MBR was responsible for the increase in the water flux of the FO membrane, which was finally stable at about 6.5 LMH. The removal efficiency of TOC and NH4+-N reached 96% and 98%, respectively, in the effluent water from the FO membrane. The effluent water from the MF membrane could be used for urban miscellaneous water. The fouled TFC membrane was covered by total cells, proteins, α-D-glucopyranose polysaccharides, and β-D-glucopyranose polysaccharides, with total cells and proteins being the dominant biofoulants. Salt accumulation played a more important role in the decline in the flux of OMBRs; however, membrane fouling, especially the outer fouling, was the main reason for the decline in flux in MFO-MBRs.
- Microfiltration /
- Forward osmosis /
- Thin-film composite polyamide /
- Salt accumulation /
- Membrane fouling

[1]	CORNELISSEN E R, HARMSEN D, DE KORTE K F, et al. Membrane fouling and process performance of forward osmosis membranes on activated sludge[J]. Journal of Membrane Science, 2008, 319(1/2): 158-168
[2]	ACHILLI A, CATH T Y, MARCHAND E A, et al. The forward osmosis membrane bioreactor: A low fouling alternative to MBR processes[J]. Desalination, 2009, 239(1/2/3): 10-21
[3]	YAP W J, ZHANG Jinsong, LAY W C L, et al. State of the art of osmotic membrane bioreactors for water reclamation[J]. Bioresource Technology, 2012, 122: 217-222
[4]	WANG Xinhua, CHANG V W C, TANG C Y. Osmotic membrane bioreactor (OMBR) technology for wastewater treatment and reclamation: Advances, challenges, and prospects for the future[J]. Journal of Membrane Science, 2016, 504: 113-132
[5]	XIAO Dezhong, TANG C Y, ZHANG Jinsong, et al. Modeling salt accumulation in osmotic membrane bioreactors: Implications for FO membrane selection and system operation[J]. Journal of Membrane Science, 2011, 366(1/2): 314-324
[6]	WANG Xinhua, CHEN Yao, YUAN Bo, et al. Impacts of sludge retention time on sludge characteristics and membrane fouling in a submerged osmotic membrane bioreactor[J]. Bioresource Technology, 2014, 161: 340-347
[7]	WANG Xinhua, YUAN Bo, CHEN Yao, et al. Integration of micro-filtration into osmotic membrane bioreactors to prevent salinity build-up[J]. Bioresource Technology, 2014, 167: 116-123
[8]	XIE Ming, NGHIEM L D, PRICE W E, et al. Relating rejection of trace organic contaminants to membrane properties in forward osmosis: Measurements, modelling and implications[J]. Water Research, 2014, 49: 265-274
[9]	TANG C Y, SHE Qianhong, LAY W C L, et al. Coupled effects of internal concentration polarization and fouling on flux behavior of forward osmosis membranes during humic acid filtration[J]. Journal of Membrane Science, 2010, 354(1/2): 123-133
[10]	陈康, 王新华, 李秀芬, 等. 钙离子对短期膜污染的影响[J]. 环境工程学报, 2012, 6(2): 471-476
[11]	国家环境保护总局. 水和废水监测分析方法.4版[M]. 北京: 中国环境科学出版社, 2002
[12]	CHEN Kang, WANG Xinhua, LI Xiufen, et al. Impacts of sludge retention time on the performance of submerged membrane bioreactor with the addition of calcium ion[J]. Separation and Purification Technology, 2011, 82: 148-155
[13]	BRADFORD M M. A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding[J]. Analytical Biochemistry, 1976, 72(1/2): 248-254
[14]	DUBOIS M, GILLES K A, HAMILTON J K, et al. Colorimetric method for determination of sugars and related substances[J]. Analytical Chemistry, 1956, 28(3): 350-356
[15]	YUAN Bo, WANG Xinhua, TANG Chuyang, et al. In situ observation of the growth of biofouling layer in osmotic membrane bioreactors by multiple fluorescence labeling and confocal laser scanning microscopy[J]. Water Research, 2015, 75: 188-200
[16]	WANG Xinhus, ZHAO Yanxiao, YUAN Bo. Comparison of biofouling mechanisms between cellulose triacetate (CTA) and thin-film composite (TFC) polyamide forward osmosis membranes in osmotic membrane bioreactors[J]. Bioresource Technology, 2016, 202: 50-58
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赵艳晓, 王新华, 李秀芬. 耦合微滤膜的正渗透膜生物反应器的构建及其运行性能[J]. 环境工程学报, 2017, 11(4): 1981-1986. doi: 10.12030/j.cjee.201601071

引用本文:

赵艳晓, 王新华, 李秀芬. 耦合微滤膜的正渗透膜生物反应器的构建及其运行性能[J]. 环境工程学报, 2017, 11(4): 1981-1986. doi: 10.12030/j.cjee.201601071

Citation:

耦合微滤膜的正渗透膜生物反应器的构建及其运行性能

1. 江南大学环境与土木工程学院, 无锡 214122
2. 江苏省厌氧生物技术重点实验室, 无锡 214122
3. 江苏省水处理技术与材料协同创新中心, 无锡 214122

收稿日期: 2016-03-03

基金项目:

国家自然科学基金资助项目（21107035）

关键词:

摘要: 针对目前正渗透膜生物反应器（OMBR）存在的盐度积累问题，借助微滤（MF）膜允许溶解性盐透过的特性，开发了基于MF和正渗透（FO）技术的新型膜生物反应器（MFO-MBR）。实验以MFO-MBR为依托，选取性能优良的聚酰胺（TFC）材质的FO膜，考察工艺处理模拟生活污水过程中的运行性能。结果表明，由于MF的引入，MFO-MBR的盐度被控制在1.7 mS·cm-1左右。正是由于MFO-MBR中的低盐度环境，FO膜的通量得到了提升，最终稳定在6.5 LMH左右。虽然MF的出水劣于FO膜的出水，但是可以直接用作城市杂用水，而FO膜出水中TOC和NH4+-N的去除率分别高达96%和98%。TFC污染膜面含有总细胞、蛋白质、ɑ-D-吡喃多糖及β-D-吡喃多糖等有机和生物污染物，且以微生物和蛋白质为主。盐度积累导致的渗透压差的减小是常规OMBR通量衰减的主要原因，而膜污染尤其外部污染则是MFO-MBR通量衰减的主因。

English Abstract

Performance of a novel osmotic membrane bioreactor integrating with microfiltration membrane for municipal wastewater treatment

1. School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
2. Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi 214122, China
3. Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, Wuxi 214122, China

Received Date: 2016-03-03

Fund Project:

Keywords:

Abstract: In order to alleviate salt accumulation in an osmotic membrane bioreactor (OMBR), this study proposed the use of a microfiltration (MF) membrane integrated into an OMBR for solute discharge, along with a novel MBR that simultaneously combined MF and FO membranes (MFO-MBR). Herein, a thin-film composite polyamide (TFC) membrane was applied in an MFO-MBR for treating synthetic wastewater, instead of the commonly used cellulose triacetate (CTA) membrane, due to its superior properties. The results indicated that the salinity could be effectively controlled at about 1.7 mS·cm-1 in the MFO-MBR due to the MF membrane. The lower salinity in the MFO-MBR was responsible for the increase in the water flux of the FO membrane, which was finally stable at about 6.5 LMH. The removal efficiency of TOC and NH4+-N reached 96% and 98%, respectively, in the effluent water from the FO membrane. The effluent water from the MF membrane could be used for urban miscellaneous water. The fouled TFC membrane was covered by total cells, proteins, α-D-glucopyranose polysaccharides, and β-D-glucopyranose polysaccharides, with total cells and proteins being the dominant biofoulants. Salt accumulation played a more important role in the decline in the flux of OMBRs; however, membrane fouling, especially the outer fouling, was the main reason for the decline in flux in MFO-MBRs.

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耦合微滤膜的正渗透膜生物反应器的构建及其运行性能

Performance of a novel osmotic membrane bioreactor integrating with microfiltration membrane for municipal wastewater treatment

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耦合微滤膜的正渗透膜生物反应器的构建及其运行性能

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Performance of a novel osmotic membrane bioreactor integrating with microfiltration membrane for municipal wastewater treatment

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