膜滤特性对混凝-超滤组合去除双酚A的影响
|
摘要
针对水中的内分泌干扰物污染问题,研究了膜滤过程中膜孔径大小对双酚A(BPA)的去除特性,以及聚合氯化铝(PACl)混凝与超滤组合方法对BPA去除效能的影响。结果表明,膜孔径越小、初始BPA含量越小,BPA去除率越大,截留相对分子质量小于10~3的膜滤后BPA的最高去除率达到93.08%。在较广pH范围内(4.08、7.25和10.05),随着膜孔径增大,BPA的去除率逐渐减小,中性(pH=7.25)或酸性(pH=4.08)条件下更有利于膜滤去除BPA;PACl投加量为12 mg/L时,pH为7左右时,BPA去除率达到最大的37.68%。增加腐殖酸的含量并不利于BPA的去除。相较于单独的混凝或超滤工艺,混凝-超滤组合工艺有利于提高BPA的去除率并降低膜污染。
Aimed at the problem of contamination of endocrine disruptors in water. The removal characteristics of bisphenol A(BPA) by the membrane pore size during membrane filtration, and the effect of combined coagulation and ultrafiltration on BPA removal efficiency were studied. The results indicated that, the smaller the membrane pore size and the initial BPA content, the higher the BPA removal rate, the highest removal rates of BPA could reach 93.08% after membrane filtration when cut-off relative molecular mass was less than 10~3. With the membrane pore size increasing, the removal rate of BPA gradually decreased in the wide range of pH(4.08, 7.25 and 10.05), neutralization(pH=7.25) or acidity(pH=4.08) was beneficial for BPA removal. When the dosage of aluminum sulfate was 12 mg/L and pH was 7, the removal rate of BPA was the highest as 37.68%. However, increasing humic acid content was not beneficial for BPA removal. Compared with single coagulation or ultrafiltration processes, the combined technology of coagulation-ultrafiltration was beneficial to increase the removal rate of BPA and reduce membrane fouling.
Aimed at the problem of contamination of endocrine disruptors in water. The removal characteristics of bisphenol A(BPA) by the membrane pore size during membrane filtration, and the effect of combined coagulation and ultrafiltration on BPA removal efficiency were studied. The results indicated that, the smaller the membrane pore size and the initial BPA content, the higher the BPA removal rate, the highest removal rates of BPA could reach 93.08% after membrane filtration when cut-off relative molecular mass was less than 10~3. With the membrane pore size increasing, the removal rate of BPA gradually decreased in the wide range of pH(4.08, 7.25 and 10.05), neutralization(pH=7.25) or acidity(pH=4.08) was beneficial for BPA removal. When the dosage of aluminum sulfate was 12 mg/L and pH was 7, the removal rate of BPA was the highest as 37.68%. However, increasing humic acid content was not beneficial for BPA removal. Compared with single coagulation or ultrafiltration processes, the combined technology of coagulation-ultrafiltration was beneficial to increase the removal rate of BPA and reduce membrane fouling.
引文
[1]NEAMTU M,FRIMMEL F H.Degradation of endocrine disrupting bisphenol A by 254 nm irradiation in different water matrices and effect on yeast cells[J].Water Research,2006,40:3745-3750.
[2]ZSARNOVSZKY A,LE H H,WANG H S,et al.Ontogeny of rapid estrogen-mediated extracellular signal-regulated kinase signaling in the rat cerebellar cortex:potent nongenomic agonist and endocrine disrupting activity of the xenoestrogen bisphenol A[J].Endrocrinology,2005,146(2):5388-5396.
[3]LOOS R,HANKE G,UMLAUF G,et al.LC-MS-MS analysis and occurrence of octyl-and nonylphenol,their ethoxylates and their carboxylates in Belgian and Italian textile industry,waste water treatment plant effluents and surface waters[J].Chemosphere,2007,66:690-699.
[4]RODRIGUEZ-MOZAZ S,ALDA M L,BARCEL魷D.Analysis of bisphenol A in natural water by means of an optical immuno-sensor[J].Water Research,2005,39(2):5071-5079.
[5]王梓松,谢更新,曾光明,等.聚合氯化铝对水体中双酚A的混凝特征[J].中国环境科学,2008,28(6):531-535.
[6]邵晓玲,文刚,马军.松花江及哈尔滨市饮用水雌激素活性的调查与分析[J].环境科学,2009,30(5):1362-1367.
[7]陈益明,刘坤,郑涛,等.城市污水回用现状及发展趋势[J].净水技术,2003,12(5):34-36.
[8]YOON Y,WESTERHOFF P,SNYDERS A,et al.Nanofiltration and ultrafiltration of endocrine disrupting compounds,pharmaceuticals and personal careproducts[J].Membrane Science,2006,270(1/2):88-100.
[9]王琳,董秉直,高乃云.超滤去除水中内分泌干扰物(BPA)的效果和影响因素[J].环境科学,2007,28(2):329-334.
[10]WINTGENS T,GALLENKEM PER M,MELIN T.Endocrine disrupter removal from wastewater using membrane bioreactor and nanofiltration technology[J].Desalination,2002,146(1/3):387-391.
[11]NGHIEM L D,MANIS A,SOLDENHOFF K,et al.Estrogenic hormone removal from wastewater using NF/RO membranes[J].Membrane Science,2004,242:37-45.
[12]OZAKI H,LI H F.Rejection of organic compounds by ultra-low pressure reverse osmosis membrane[J].Water Research,2002,36(1):123-130.
[13]WESTERHOFF P,YOON Y,SNYDER S,et al.Fate of endocrinedisruptor,pharmaceutical,and personal care product chemicals during simulated drinking water treatment processes[J].Environmental Science&Technology,2005,39(17):6649-6663.
[14]MULDER A K,LEGUBE B,DARD S.Atrazine and simazine removal mechanisms by nanofiltration:Influence concentration[J].Water Research,1996,30(11):2535-2542.
[15]栾兆坤,曲久辉,汤鸿霄.聚合铝的形态稳定性及其动电特性的研究[J].环境化学,1997,16(6):506-514.
[16]罗晓鸿,周荣.藻类及其分泌物对混凝过程的影响研究[J].环境科学学报,1998,18(3):318-324.
[2]ZSARNOVSZKY A,LE H H,WANG H S,et al.Ontogeny of rapid estrogen-mediated extracellular signal-regulated kinase signaling in the rat cerebellar cortex:potent nongenomic agonist and endocrine disrupting activity of the xenoestrogen bisphenol A[J].Endrocrinology,2005,146(2):5388-5396.
[3]LOOS R,HANKE G,UMLAUF G,et al.LC-MS-MS analysis and occurrence of octyl-and nonylphenol,their ethoxylates and their carboxylates in Belgian and Italian textile industry,waste water treatment plant effluents and surface waters[J].Chemosphere,2007,66:690-699.
[4]RODRIGUEZ-MOZAZ S,ALDA M L,BARCEL魷D.Analysis of bisphenol A in natural water by means of an optical immuno-sensor[J].Water Research,2005,39(2):5071-5079.
[5]王梓松,谢更新,曾光明,等.聚合氯化铝对水体中双酚A的混凝特征[J].中国环境科学,2008,28(6):531-535.
[6]邵晓玲,文刚,马军.松花江及哈尔滨市饮用水雌激素活性的调查与分析[J].环境科学,2009,30(5):1362-1367.
[7]陈益明,刘坤,郑涛,等.城市污水回用现状及发展趋势[J].净水技术,2003,12(5):34-36.
[8]YOON Y,WESTERHOFF P,SNYDERS A,et al.Nanofiltration and ultrafiltration of endocrine disrupting compounds,pharmaceuticals and personal careproducts[J].Membrane Science,2006,270(1/2):88-100.
[9]王琳,董秉直,高乃云.超滤去除水中内分泌干扰物(BPA)的效果和影响因素[J].环境科学,2007,28(2):329-334.
[10]WINTGENS T,GALLENKEM PER M,MELIN T.Endocrine disrupter removal from wastewater using membrane bioreactor and nanofiltration technology[J].Desalination,2002,146(1/3):387-391.
[11]NGHIEM L D,MANIS A,SOLDENHOFF K,et al.Estrogenic hormone removal from wastewater using NF/RO membranes[J].Membrane Science,2004,242:37-45.
[12]OZAKI H,LI H F.Rejection of organic compounds by ultra-low pressure reverse osmosis membrane[J].Water Research,2002,36(1):123-130.
[13]WESTERHOFF P,YOON Y,SNYDER S,et al.Fate of endocrinedisruptor,pharmaceutical,and personal care product chemicals during simulated drinking water treatment processes[J].Environmental Science&Technology,2005,39(17):6649-6663.
[14]MULDER A K,LEGUBE B,DARD S.Atrazine and simazine removal mechanisms by nanofiltration:Influence concentration[J].Water Research,1996,30(11):2535-2542.
[15]栾兆坤,曲久辉,汤鸿霄.聚合铝的形态稳定性及其动电特性的研究[J].环境化学,1997,16(6):506-514.
[16]罗晓鸿,周荣.藻类及其分泌物对混凝过程的影响研究[J].环境科学学报,1998,18(3):318-324.