原水中有机物特性对纳滤膜污染的影响

丰桂珍; 黄林; 范师秀

doi:10.13205/j.hjgc.202302001

原水中有机物特性对纳滤膜污染的影响

doi: 10.13205/j.hjgc.202302001

华东交通大学土木建筑学院, 南昌 330013

基金项目:

国家自然科学基金项目(51868019)

详细信息

作者简介:
丰桂珍(1977-),女,博士,副教授,研究方向为水处理理论与技术。1491914560@qq.com

通讯作者:
丰桂珍(1977-),女,博士,副教授,研究方向为水处理理论与技术。1491914560@qq.com

计量
- 文章访问数: 86
- HTML全文浏览量: 8
- PDF下载量: 9
- 被引次数: 0
出版历程
- 收稿日期: 2021-09-09
- 网络出版日期: 2023-05-25
- 刊出日期: 2023-02-01

EFFECT OF ORGANIC MATTER CHARACTERISTICS IN RAW WATER ON NANOFILTRATION MEMBRANE FOULING

School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, China

摘要

摘要: 通过XDLVO理论分析了赣江原水中亲疏水性有机污染物对纳滤(NF)膜的污染状况,对选取的不同分子量区间(<100 kDa、<50 kDa、<3 kDa)的6种亲、疏水性有机物及NF膜的界面自由能进行定量分析,分析了膜污染性能,并通过纳滤试验验证通量衰减与界面自由能的对应关系。结果表明:6种不同分子量的亲/疏水性有机污染物对膜造成污染严重程度与XDLVO理论分析结果相符。不同分子量的有机污染物对NF膜污染程度由大到小顺序为小于100 kDa(疏水性)>小于50 kDa(疏水性)>小于3 kDa(疏水性)>小于3 kDa(亲水性)>小于50 kDa(亲水性)>小于100 kDa(亲水性)。分子量<100 kDa的疏水性有机物与膜之间排斥作用最小,污染最为严重。膜表面的污染物主要是多糖、蛋白质和苯环烯烃类,且在过滤初期有机物堵塞膜孔,膜比通量下降速度较快,而在过滤后期滤饼层形成,膜比通量下降速度减缓。
- 原水 /
- XDLVO理论 /
- 分子量 /
- 亲/疏水性有机物 /
- 膜污染 /
- 纳滤
Abstract: In this research, the XDLVO (extended Derjaguin-Landau-Verwey-Overbeek) theory was employed to analyze the fouling status of nanofiltration (NF) membrane caused by hydrophilic and hydrophobic organic matters. Quantitative analysis was conducted on six types of hydrophilic and hydrophobic organic matters with different molecular weight ranges (less than 100 kDa, less than 50 kDa, and less than 3 kDa, respectively) and the interfacial free energy of NF membrane was analyzed, in a bid to figure out the performance of the membrane fouling. Furthermore, the corresponding relationship between flux decay and interfacial free energy was verified by the NF experiment. The results showed that the degree of membrane fouling caused by the above-mentioned six hydrophilic or hydrophobic organic matters with different molecular weights in this study was consistent with the XDLVO theoretical analysis, in which the hydrophobic ones with a molecular weight less than 100 kDa showed the slightest repulsive interaction against the membrane and led to the most serious fouling. Besides, the degree of NF membrane fouling by different organic matters was ordered in a descending way as follows:(hydrophobic, molecular weight less than 100 kDa)>(hydrophobic, molecular weight less than 50 kDa)>(hydrophobic, molecular weight less than 3 kDa)>(hydrophilic, molecular weight less than 3 kDa)>(hydrophilic, molecular weight less than 50 kDa)>(hydrophilic, molecular weight less than 100 kDa). The main contaminants on the membrane surface were polysaccharides, proteins and phencyclic olefins, the organic matter clogged the membrane pores in the early stages of filtration, resulting in a rapid decrease in the specific flux of the membrane, while the formation of a cake layer in the later stages of filtration slowed the decrease in the specific flux of the membrane.
- raw water /
- XDLVO theory /
- molecular weights /
- hydrophilicity and hydrophobicity organic matters /
- membrane fouling /
- nanofiltration

HTML全文

参考文献(30)

[1]	李世勇, 武福平, 张子贤, 等. 不同国产纳滤膜对饮用水中氟离子的去除影响研究[J]. 水处理技术, 2021, 47(4):62-65.
[2]	ELAKKIYA S, ARTHANAREESWARAN G, ISMAIL A F, et al. Review on characteristics of biomaterial and nanomaterials based polymeric nanocomposite membranes for seawater treatment application[J]. Environmental Research, 2021, 197:111177.
[3]	ZAMANI F, ULLAH A, AKHONDI E, et al. Impact of the surface energy of particulate foulants on membrane fouling[J]. Journal of Membrane Science, 2016, 510:101-111.
[4]	YUAN X T, WU L, GENG H Z, et al. Polyaniline/polysulfone ultrafiltration membranes with improved permeability and anti-fouling behavior[J]. Journal of Water Process Engineering, 2021, 40:101903.
[5]	张媚佳. 膜生物反应器中膜污染的形成机理及其影响因素研究[D]. 金华:浙江师范大学, 2015.
[6]	LU D W, JIA B H, XU S, et al. Role of pre-coagulation in ultralow pressure membrane system for Microcystis aeruginosa-laden water treatment:membrane fouling potential and mechanism[J]. Science of the Total Environment, 2020, 710:136340.
[7]	赵飞, 许柯, 任洪强, 等. XDLVO理论解析有机物和钙离子对纳滤膜生物污染的影响[J]. 中国环境科学, 2015, 35(12):3602-3611.
[8]	SHEN L G, CUI X, YU G Y, et al. Thermodynamic assessment of adsorptive fouling with the membranes modified via layer-by-layer self-assembly technique[J]. Journal of Colloid and Interface Science, 2017, 494:194-203.
[9]	SHAN L L, FAN H W, GUO H X, et al. Natural organic matter fouling behaviors on superwetting nanofiltration membranes[J]. Water Research, 2016, 93:121-132.
[10]	ZHAO L H, WANG F Y, WENG X X, et al. Novel indicators for thermodynamic prediction of interfacial interactions related with adhesive fouling in a membrane bioreactor[J]. Journal of Colloid and Interface Science, 2017, 487:320-329.
[11]	ZHANG M J, LIAO B Q, ZHOU X L, et al. Effects of hydrophilicity/hydrophobicity of membrane on membrane fouling in a submerged membrane bioreactor[J]. Bioresource Technology, 2015, 175:59-67.
[12]	ZHAO F C, LI Z X, ZHOU X L, et al. The comparison between vibration and aeration on the membrane performance in algae harvesting[J]. Journal of Membrane Science, 2019, 592:117390.
[13]	ZHAO Y Y, QIN Z P, ZHAO Y, et al. Evaluating the anti-fouling property of the hydrophilically modified porous PTFE membrane[J]. Desalination and Water Treatment, 2019, 159:224-231.
[14]	BAI Z Y, ZHANG R J, WANG S X, et al. Membrane fouling behaviors of ceramic hollow fiber microfiltration (MF) membranes by typical organic matters[J]. Separation and Purification Technology, 2021, 274:118951.
[15]	ZHAO Y M, LU D W, XU C B, et al. Synergistic oxidation-filtration process analysis of catalytic CuFe₂O₄-Tailored ceramic membrane filtration via peroxymonosulfate activation for humic acid treatment[J]. Water Research, 2020, 171:115387.
[16]	THURMAN E M, MALCOLM R L. Preparative isolation of aquatic humic substances[J]. Environmental Science & Technology, 1981, 15(4):463-466.
[17]	BRANT J A, CHILDRESS A E. Assessing short-range membrane-colloid interactions using surface energetics[J]. Journal of Membrane Science, 2002, 203(1):257-273.
[18]	van OSS C J, GOOD R J, BUSSCHER R J. Estimation of the polar surface tension parameters of glycerol and formamide, for use in contact angle measurements on polar solids[J]. Journal of Dispersion Science & Technology, 1990, 11(1):75-81.
[19]	丰桂珍, 董秉直. DOM纳滤膜污染及对膜截留卡马西平性能的影响[J]. 环境科学, 2013, 34(11):4295-4303.
[20]	KUHNL W, PIRY A, KAUFMANN V, et al. Impact of colloidal interactions on the flux in cross-flow microfiltration of milk at different pH values:a surface energy approach[J]. Journal of Membrane Science, 2010, 352(1/2):107-115.
[21]	寇朝卫, 张干伟, 沈舒苏, 等. 基于XDLVO理论解析膜法水处理过程中膜污染问题的研究[J]. 膜科学与技术, 2017, 37(1):8-15.
[22]	寇朝卫, 张干伟, 沈舒苏, 等. 基于XDLVO理论分析物理化学相互作用对纳滤膜有机污染影响[J]. 水处理技术, 2017, 43(8):32-39.
[23]	van OSS C J, GOOD R J. Surface tension and the solubility of polymers and biopolymers:the role of polar and apolar interfacial free energies[J]. Journal of Macromolecular Science, Part A, 1989, 26(8):1183-1203.
[24]	van OSS C J. Interfacial forces in aqueous media[M]. Boca Raton:CRC Press, 2006:1-300.
[25]	吴欢欢, 沈飞, 万印华, 等. XDLVO理论解析膜蒸馏回收离子液体过程中的膜污染研究[J]. 膜科学与技术, 2019, 39(5):9-17.
[26]	ZHANG B, TANG H L, HUANG D M, et al. Effect of pH on anionic polyacrylamide adhesion:New insights into membrane fouling based on XDLVO analysis[J]. Journal of Molecular Liquids, 2020, 320:114463.
[27]	FENG L, LI X F, SONG P, et al. Surface interactions and fouling properties of Micrococcus luteus with microfiltration membranes[J]. Applied Biochemistry and Biotechnology, 2011, 165(5/6):1235-1244.
[28]	刘晓倩. XDLVO理论定量解析混合有机物微滤膜污染机理[D]. 济南:山东大学, 2017.
[29]	YANG H K, XUE W, LIU M J, et al. Carbon doped Fe₃O₄ peroxidase-like nanozyme for mitigating the membrane fouling by NOM at neutral pH[J]. Water Research, 2020, 174:115637.
[30]	邢本刚, 梁宏. FT-IR在蛋白质二级结构研究中的应用进展[J]. 广西师范大学学报(自然科学版), 1997,15(3):46-50.