粉末活性炭预沉积去除藻类有机物及其对膜污染的影响

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (3611 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要以东海原甲藻分泌的藻类有机物（AOM）为研究对象，研究粉末活性炭预沉积和预吸附两种膜前预处理手段对海水中AOM的去除作用，对比分析AOM直接超滤、预沉积和预吸附后再超滤时膜通量、膜阻力分布、膜表面亲疏水性和粗糙度的变化，探讨粉末活性炭孔隙结构、沉积量对AOM去除效果及超滤膜污染的影响.结果表明，活性炭预沉积和预吸附能够提高超滤膜对含AOM海水中DOC和UV₂₅₄的去除率，预沉积对AOM的去除作用优于预吸附，介孔活性炭较微孔活性炭的预沉积效果更好，当介孔活性炭PAC2的沉积量为0.4g/L时，DOC和UV₂₅₄的去除率较直接超滤分别提高了25.1%和33.6%.紫外吸收比指数（URI）分析表明，活性炭预沉积和预吸附对有机物的去除作用具有选择性，AOM中芳香族物质较脂肪族羧基类物质更易被除去.粉末活性炭预沉积下AOM超滤时的滤饼层污染阻力（R_c）和膜孔堵塞阻力（R_p）较直接超滤分别降低了39.6%和81.2%，活性炭在超滤膜表面形成的滤饼层结构将AOM与超滤膜进行了隔离，能够减缓膜污染速率，对于控制膜的不可逆污染亦具有重要作用.

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	王文华
	赵瑾
	司晓光
	姜天翔
	马宇辉
	王勋亮
	王静

关键词 ：粉末活性炭(PAC), 预沉积, 藻类有机物, 超滤, 膜污染

Abstract：Effectiveness of PAC pre-deposition and pre-adsorption to remove the algal organic matter (AOM) extracted from Prorocentrum donghaiense was investigated. The differences in membrane flux, fouling resistance, hydrophilicity and roughness of membrane surface between direct ultrafiltration (UF), PAC pre-deposition-UF and PAC pre-adsorption-UF were analyzed. The effects of pore structure and deposition doses on AOM removal rates and membrane fouling were evaluated. It was found that DOC and UV₂₅₄ removal rates could be enhanced by pre-deposition and pre-adsorption, and the former was more favorable for AOM removal than the latter. Mesoporous PAC had a better effect on the improvement of AOM removal rate than microporous PAC during pre-deposition treatment. Compared with direct UF, the removal rates of DOC and UV₂₅₄ were increased by 25.1% and 33.6%, respectively, when the deposition amount of mesoporous PAC was 0.4g/L. The analysis of UV absorbance ratio index (URI) confirmed that the aromatic groups could be selectively removed over aliphatic groups using PAC pre-deposition and pre-adsorption. The cake layer resistance (R_c) and the pore resistance (R_p) were decreased by 39.6% and 81.2%, respectively, when PAC pre-deposition were used before AOM UF. Membrane fouling rate was reduced by PAC pre-deposition because a PAC cake layer was formed between UF membrane and AOM, resulting in the mitigation of irreversible fouling.

Key words： powdered activated carbon (PAC) pre-deposition algal organic matter (AOM) ultrafiltration (UF) membrane fouling

收稿日期: 2017-11-08

X703

基金资助:中央级公益性科研院所基本科研业务费专项资金项目（K-JBYWF-2015-T10，K-JBYWF-2016-T8）

作者简介: 王文华(1985-),男,内蒙古武川人,高级工程师,博士,主要从事海水净化与水再利用研究.发表论文20余篇.

引用本文:

王文华, 赵瑾, 司晓光, 姜天翔, 马宇辉, 王勋亮, 王静. 粉末活性炭预沉积去除藻类有机物及其对膜污染的影响[J]. 中国环境科学, 2018, 38(6): 2135-2143. WANG Wen-hua, ZHAO Jin, SI Xiao-guang, JIANG Tian-xiang, MA Yu-hui, WANG Xun-liang, WANG Jing. Removal of algal organic matter (AOM) by powdered activated carbon (PAC) pre-deposition and its effect on membrane fouling. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(6): 2135-2143.

链接本文:

http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2018/V38/I6/2135

[1]	Richlen M L, Morton S L, Jamali E A, et al. The catastrophic 2008-2009red tide in the Arabian Gulf region, with observations on the identification and phylogeny of the fish-killing dinoflagellate Cochlodinium polykrikoides[J]. Harmful Algae, 2010,9(2):163-172.
[2]	Caron D A, Garneau M E, Seubert E, et al. Harmful algae and their potential impacts on desalination operations of southern California[J]. Water Research, 2010,44:385-416.
[3]	Villacorte L O, Tabatabai S A A, Anderson D M, et al. Seawater reverse osmosis desalination and (harmful) algal blooms[J]. Desalination, 2015,360:61-80.
[4]	2016年中国海洋灾害公报[R]. 北京:国家海洋局, 2017.
[5]	Pivokonsky M, Safarikova J, Baresova M, et al. A comparison of the character of algal extracellular versus cellular organic matter produced by cyanobacterium, diatom and green alga[J]. Water Research, 2014,51:37-46.
[6]	Villacorte L O, Ekowati Y, Neu T R, et al. Characterisation of algal organic matter produced by bloom-forming marine and freshwater algae[J]. Water Research, 2015,73:216-230.
[7]	喻瑶,许光红,林洁,等.太湖原水中膜污染物质的确定与表征[J]. 中国环境科学, 2012,32(11):2067-2074.
[8]	Merle T, Dramas L, Gutierrez L, et al. Investigation of severe UF membrane fouling induced by three marine algal species[J]. Water Research, 2016,93:10-19.
[9]	苗瑞,王磊,田丽,等.海藻酸及腐殖酸共存对PVDF超滤膜的污染行为[J]. 中国环境科学, 2014,34(10):2568-2574.
[10]	Tansakul C, Laborie S, Cabassud C. Adsorption combined with ultrafiltration to remove organic matter from seawater[J]. Water Research, 2011,45:6362-6370.
[11]	王文华,赵瑾,姜天翔,等.粉末活性炭对超滤膜去除海水中有机物的影响[J]. 化工进展, 2016,35(9):2967-2972.
[12]	苗雨,翟洪艳,于珊珊.活性炭吸附对藻类有机物的去除及其消毒副产物的控制[J]. 环境科学, 2017,38(9):3738-3746.
[13]	Li K, Liang H, Qu F S, et al. Control of natural organic matter fouling of ultrafiltration membrane by adsorption pretreatment:Comparison of mesoporous adsorbent resin and powdered activated carbon[J]. Journal of Membrane Science, 2014,471:94-102.
[14]	刘成,王杰,陈彬.MIEX®预处理对水源水中藻源DON的去除效能及机理[J]. 中国环境科学, 2015,35(4):1123-1128.
[15]	Wang Long F, Benjamin M M. HAOPs pretreatment to reduce membrane fouling:Foulant identification, removal, and interactions[J]. Journal of Membrane Science, 2016,515:219-229.
[16]	Cai Z, Benjamin M M. NOM fractionation and fouling of low-pressure membranes in microgranular adsorptive filtration[J]. Environmental Science & Technology, 2011,45:8935-8940.
[17]	Ma B, Yu W, William A, et al. Modification of ultrafiltration membrane with nanoscale zerovalent iron layers for humic acid fouling reduction[J]. Water Research, 2015,71:140-149.
[18]	Wang L F, Benjamin M M. A multi-spectral approach to differentiate the effects of adsorbent pretreatments on the characteristics of NOM and membrane fouling[J]. Water Research, 2016,98:56-63.
[19]	王文华,赵瑾,马宇辉,等.预涂动态膜强化超滤去除海水中有机物及其对膜污染的影响[J]. 环境科学学报, 2017,37(4):1349-1357.
[20]	Zhang Y, Zhao Y, Chu H, et al. Dewatering of Chlorella pyrenoidosa using diatomite dynamic membrane:Filtration performance, membrane fouling and cake behavior[J]. Colloids and Surface B:Biointerfaces, 2014,113:458-466.
[21]	Her N, Amy G, Plottu-Pecheuxc A, et al. Identification of nanofiltration membrane foulants[J]. Water Research, 2007,41:3936-3947.
[22]	杨哲,孙迎雪,石娜.海水淡化超滤-反渗透工艺沿程溴代消毒副产物变化规律[J]. 环境科学, 2015,36(10):3706-3714.
[23]	古励,郭显强,丁昌龙,等.藻源型溶解性有机氮的产生及不同时期藻类有机物的特性[J]. 中国环境科学, 2015,35(9):2745-2753.
[24]	Xie Y, Ma B, Zhang X, et al. Modification of ultrafiltration membrane with iron/aluminum mixed hydrolyzed precipitate layer for humic acid fouling reduction[J]. Desalination and Water Treatment, 2016,57:26022-26030.
[25]	Bar-Zeev E, Passow U, Castrillo?n S R, et al. Transparent exopolymer particles:from aquatic environments and engineered systems to membrane biofouling[J]. Environmental Science & Technology, 2015,49:691-707.
[26]	Qu F, Liang H, Zhou J, et al. Ultrafiltration membrane fouling caused by extracellular organic matter (EOM) from microcystic aeruginosa:Effects of membrane pore size and surface hydrophobicity[J]. Journal of Membrane Science, 2014,499:58-66.
[27]	邢卫红,仲兆祥,景文珩.基于膜表面与界面作用的膜污染控制方法[J]. 化工学报, 2013,64(1):173-181.
[28]	Cho J, Amy G, Pellegrino J, et al. Characterization of clean and natural organic matter (NOM) fouled NF and UF membrane, and foulants characterization[J]. Desalination, 1998,118(1-3):101-108.
[29]	Chu K H, Yoo S S, Yoon Y, et al. Specific investigation of irreversible membrane fouling in excess of critical flux for irreversibility:A pilot-sacle operation for water treatment[J]. Separation and Purification Technology, 2015,151:147-154.