Characterization of dissolved organic matter and membrane fouling in coagulation-ultrafiltration process treating micro-polluted surface water
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摘要
Coagulation–ultrafiltration(C–UF) is widely used for surface water treatment. With the removal of pollutants, the characteristics of organic matter change and affect the final treatment efficiency and the development of membrane fouling. In this study, we built a dynamic C–UF set-up to carry out the treatment of micro-polluted surface water, to investigate the characteristics of dissolved organic matter from different units. The influences of poly aluminum chloride and poly dimethyldiallylammonium chloride(PDMDAAC) on removal efficiency and membrane fouling were also investigated. Results showed that the dosage of PDMDAAC evidently increased the UV254 and dissolved organic carbon removal efficiencies,and thereby alleviated membrane fouling in the C–UF process. Most hydrophobic bases(HoB)and hydrophobic neutral fractions could be removed by coagulation. Similarly, UF was good at removing HoB compared to hydrophilic substances(HiS) and hydrophobic acid(HoA)fractions. HiS and HoA fractions with low molecule weight accumulated on the surface of the membrane, causing the increase of transmembrane pressure(TMP). Membrane fouling was mainly caused by a removable cake layer, and mechanical cleaning was an efficient way to decrease the TMP.
Coagulation–ultrafiltration(C–UF) is widely used for surface water treatment. With the removal of pollutants, the characteristics of organic matter change and affect the final treatment efficiency and the development of membrane fouling. In this study, we built a dynamic C–UF set-up to carry out the treatment of micro-polluted surface water, to investigate the characteristics of dissolved organic matter from different units. The influences of poly aluminum chloride and poly dimethyldiallylammonium chloride(PDMDAAC) on removal efficiency and membrane fouling were also investigated. Results showed that the dosage of PDMDAAC evidently increased the UV254 and dissolved organic carbon removal efficiencies,and thereby alleviated membrane fouling in the C–UF process. Most hydrophobic bases(HoB)and hydrophobic neutral fractions could be removed by coagulation. Similarly, UF was good at removing HoB compared to hydrophilic substances(HiS) and hydrophobic acid(HoA)fractions. HiS and HoA fractions with low molecule weight accumulated on the surface of the membrane, causing the increase of transmembrane pressure(TMP). Membrane fouling was mainly caused by a removable cake layer, and mechanical cleaning was an efficient way to decrease the TMP.
Coagulation–ultrafiltration(C–UF) is widely used for surface water treatment. With the removal of pollutants, the characteristics of organic matter change and affect the final treatment efficiency and the development of membrane fouling. In this study, we built a dynamic C–UF set-up to carry out the treatment of micro-polluted surface water, to investigate the characteristics of dissolved organic matter from different units. The influences of poly aluminum chloride and poly dimethyldiallylammonium chloride(PDMDAAC) on removal efficiency and membrane fouling were also investigated. Results showed that the dosage of PDMDAAC evidently increased the UV254 and dissolved organic carbon removal efficiencies,and thereby alleviated membrane fouling in the C–UF process. Most hydrophobic bases(HoB)and hydrophobic neutral fractions could be removed by coagulation. Similarly, UF was good at removing HoB compared to hydrophilic substances(HiS) and hydrophobic acid(HoA)fractions. HiS and HoA fractions with low molecule weight accumulated on the surface of the membrane, causing the increase of transmembrane pressure(TMP). Membrane fouling was mainly caused by a removable cake layer, and mechanical cleaning was an efficient way to decrease the TMP.
引文
Benschoten,J.E.V.,Edzwald,J.K.,1990.Chemical aspects of coagulation using aluminum salts-I.Hydrolytic reactions of alum and polyaluminum chloride.Water Res.24,1519-1526.
Boudaud,N.,Machinal,C.,David,F.,Frévalle,B.A.,Jossent,J.,Bakanga,F.,et al.,2012.Removal of MS2,Qβand GAbacteriophages during drinking water treatment at pilot scale Water Res.46,2651-2664.
Chen,W.,Westerhoff,P.,Leenheer,J.A.,Booksh,K.,2003.Fluorescence excitation-emission matrix regional integration to quantify spectra for dissolved organic matter.Environ.Sci.Technol.37,5701.
Chowdhury,S.,Champagne,P.,Mclellan,P.J.,2009.Models for predicting disinfection byproduct(DBP)formation in drinking waters:a chronological review.Sci.Total Environ.407,4189.
Dong,B.Z.,Wang,H.W.,Feng,J.,Li,W.Y.,2008.Influence of coagulation pretreatment on UF membrane flux.Environ.Sci.29,2783.
Edzwald,J.K.,1993.Coagulation in drinking water treatment:particles,organics and coagulants.Water Sci.Technol.27,21-35.
Gao,W.,Liang,H.,Ma,J.,Han,M.,Chen,Z.L.,Han,Z.S.,Li,G.B.,2011.Membrane fouling control in ultrafiltration technology for drinking water production:a review.Desalination 272,1-8.
Goslan,E.H.,Fearing,D.A.,Banks,J.,Wilson,D.,Hills,P.,Campbell A.T.,et al.,2002.Seasonal variation in the disinfection byproduct precursor profile of a reservoir water.J.Water Supply Res.Technol.51,475-482.
Guardia,A.D.,Brunet,S.,Rogeau,D.,Matejka,G.,2002.Fractionation and characterisation of dissolved organic matter from composting green wastes.Bioresour.Technol.83,181-187.
Jacangelo,J.G.,Trussell,R.R.,Watson,M.,1997.Role of membrane technology in drinking water treatment in the United States.Desalination 113,119-127.
Kam,S.K.,Gregory,J.,2001.The interaction of humic substances with cationic polyelectrolytes.Water Res.35,3557-3566.
Korshin,G.,Chow,C.W.K.,Fabris,R.,Drikas,M.,2009.Absorbance spectroscopy-based examination of effects of coagulation on the reactivity of fractions of natural organic matter with varying apparent molecular weights.Water Res.43,1541-1548.
Leenheer,J.A.,1981.Comprehensive approach to preparative isolation and fractionation of dissolved organic carbon from natural waters and wastewaters.Environ.Sci.Technol.15,578.
Li,C.W.,Chen,Y.S.,2004.Fouling of UF membrane by humic substance:effects of molecular weight and powder-activated carbon(PAC)pre-treatment.Desalination 170,59-67.
Li,X.Y.,Chu,H.P.,2003.Membrane bioreactor for the drinking water treatment of polluted surface water supplies.Water Res.37,4781-4791.
Matilainen,A.,Veps?l?inen,M.,Sillanp??,M.,2010.Natural organic matter removal by coagulation during drinking water treatment:a review.Adv.Colloid Interface 159,189-197.
Scott,M.J.,Jones,M.N.,Woof,C.,Simon,B.,Tipping,E.,2001.The molecular properties of humic substances isolated from a UKupland peat system:a temporal investigation.Environ.Int.27,449-462.
Sharp,E.L.,Jarvis,P.,Parsons,S.A.,Jefferson,B.,2006.Impact of fractional character on the coagulation of NOM.Colloids Surf.A 286,104-111.
Shen,X.,Gao,B.,Huang,X.,Bu,F.,Yue,Q.,Li,R.,et al.,2017.Effect of the dosage ratio and the viscosity of PAC/PDMDAAC on coagulation performance and membrane fouling in a hybrid coagulation-ultrafiltration process.Chemosphere 173,288.
Sutzkover-Gutman,I.,Hasson,D.,Semiat,R.,2010.Humic substances fouling in ultrafiltration processes.Desalination261,218-231.
Wen,P.C.,Chi,F.H.,2002.A study of coagulation mechanisms of polyferric sulfate reacting with humic acid using a fluorescence-quenching method.Water Res.36,4583-4591.
Xu,W.,Yue,Q.,Gao,B.,Du,B.,2015.Impacts of organic coagulant aid on purification performance and membrane fouling of coagulation/ultrafiltration hybrid process with different Al-based coagulants.Desalination 363,126-133.
Yu,W.,Campos,L.C.,Graham,N.,2016.Application of pulsed UV-irradiation and pre-coagulation to control ultrafiltration membrane fouling in the treatment of micro-polluted surface water.Water Res.107,83.
Yu,W.-z.,Liu,H.-j.,Xu,L.,Qu,J.-h.,Graham,N.,2013.The pre-treatment of submerged ultrafiltration membrane by coagulation-effect of polyacrylamide as a coagulant aid.J.Membr.Sci.446,50-58.
Zhang,X.,Minear,R.A.,2006.Formation,adsorption and separation of high molecular weight disinfection byproducts resulting from chlorination of aquatic humic substances.Water Res.40,221-230.
Zularisam,A.W.,Ismail,A.F.,Salim,M.R.,Sakinah,M.,Ozaki,H.,2007.The effects of natural organic matter(NOM)fractions on fouling characteristics and flux recovery of ultrafiltration membranes.Desalination 212,191-208.
Boudaud,N.,Machinal,C.,David,F.,Frévalle,B.A.,Jossent,J.,Bakanga,F.,et al.,2012.Removal of MS2,Qβand GAbacteriophages during drinking water treatment at pilot scale Water Res.46,2651-2664.
Chen,W.,Westerhoff,P.,Leenheer,J.A.,Booksh,K.,2003.Fluorescence excitation-emission matrix regional integration to quantify spectra for dissolved organic matter.Environ.Sci.Technol.37,5701.
Chowdhury,S.,Champagne,P.,Mclellan,P.J.,2009.Models for predicting disinfection byproduct(DBP)formation in drinking waters:a chronological review.Sci.Total Environ.407,4189.
Dong,B.Z.,Wang,H.W.,Feng,J.,Li,W.Y.,2008.Influence of coagulation pretreatment on UF membrane flux.Environ.Sci.29,2783.
Edzwald,J.K.,1993.Coagulation in drinking water treatment:particles,organics and coagulants.Water Sci.Technol.27,21-35.
Gao,W.,Liang,H.,Ma,J.,Han,M.,Chen,Z.L.,Han,Z.S.,Li,G.B.,2011.Membrane fouling control in ultrafiltration technology for drinking water production:a review.Desalination 272,1-8.
Goslan,E.H.,Fearing,D.A.,Banks,J.,Wilson,D.,Hills,P.,Campbell A.T.,et al.,2002.Seasonal variation in the disinfection byproduct precursor profile of a reservoir water.J.Water Supply Res.Technol.51,475-482.
Guardia,A.D.,Brunet,S.,Rogeau,D.,Matejka,G.,2002.Fractionation and characterisation of dissolved organic matter from composting green wastes.Bioresour.Technol.83,181-187.
Jacangelo,J.G.,Trussell,R.R.,Watson,M.,1997.Role of membrane technology in drinking water treatment in the United States.Desalination 113,119-127.
Kam,S.K.,Gregory,J.,2001.The interaction of humic substances with cationic polyelectrolytes.Water Res.35,3557-3566.
Korshin,G.,Chow,C.W.K.,Fabris,R.,Drikas,M.,2009.Absorbance spectroscopy-based examination of effects of coagulation on the reactivity of fractions of natural organic matter with varying apparent molecular weights.Water Res.43,1541-1548.
Leenheer,J.A.,1981.Comprehensive approach to preparative isolation and fractionation of dissolved organic carbon from natural waters and wastewaters.Environ.Sci.Technol.15,578.
Li,C.W.,Chen,Y.S.,2004.Fouling of UF membrane by humic substance:effects of molecular weight and powder-activated carbon(PAC)pre-treatment.Desalination 170,59-67.
Li,X.Y.,Chu,H.P.,2003.Membrane bioreactor for the drinking water treatment of polluted surface water supplies.Water Res.37,4781-4791.
Matilainen,A.,Veps?l?inen,M.,Sillanp??,M.,2010.Natural organic matter removal by coagulation during drinking water treatment:a review.Adv.Colloid Interface 159,189-197.
Scott,M.J.,Jones,M.N.,Woof,C.,Simon,B.,Tipping,E.,2001.The molecular properties of humic substances isolated from a UKupland peat system:a temporal investigation.Environ.Int.27,449-462.
Sharp,E.L.,Jarvis,P.,Parsons,S.A.,Jefferson,B.,2006.Impact of fractional character on the coagulation of NOM.Colloids Surf.A 286,104-111.
Shen,X.,Gao,B.,Huang,X.,Bu,F.,Yue,Q.,Li,R.,et al.,2017.Effect of the dosage ratio and the viscosity of PAC/PDMDAAC on coagulation performance and membrane fouling in a hybrid coagulation-ultrafiltration process.Chemosphere 173,288.
Sutzkover-Gutman,I.,Hasson,D.,Semiat,R.,2010.Humic substances fouling in ultrafiltration processes.Desalination261,218-231.
Wen,P.C.,Chi,F.H.,2002.A study of coagulation mechanisms of polyferric sulfate reacting with humic acid using a fluorescence-quenching method.Water Res.36,4583-4591.
Xu,W.,Yue,Q.,Gao,B.,Du,B.,2015.Impacts of organic coagulant aid on purification performance and membrane fouling of coagulation/ultrafiltration hybrid process with different Al-based coagulants.Desalination 363,126-133.
Yu,W.,Campos,L.C.,Graham,N.,2016.Application of pulsed UV-irradiation and pre-coagulation to control ultrafiltration membrane fouling in the treatment of micro-polluted surface water.Water Res.107,83.
Yu,W.-z.,Liu,H.-j.,Xu,L.,Qu,J.-h.,Graham,N.,2013.The pre-treatment of submerged ultrafiltration membrane by coagulation-effect of polyacrylamide as a coagulant aid.J.Membr.Sci.446,50-58.
Zhang,X.,Minear,R.A.,2006.Formation,adsorption and separation of high molecular weight disinfection byproducts resulting from chlorination of aquatic humic substances.Water Res.40,221-230.
Zularisam,A.W.,Ismail,A.F.,Salim,M.R.,Sakinah,M.,Ozaki,H.,2007.The effects of natural organic matter(NOM)fractions on fouling characteristics and flux recovery of ultrafiltration membranes.Desalination 212,191-208.