Combined humic substance coagulation and membrane filtration under saline conditions

The effects of poly diallydimethylammonium chloride (PDADMAC) and copolymer of dimethyl aminoethyl acrylate (CoAA) coagulants on membrane performance are investigated under different conditions using ultrafiltration (UF) and nanofiltration (NF) membranes. It is evident that PDADMAC performance is better than CoAA in removing humic substances (HS) with both membranes, P005F and NF270, having equal fouling potential. Salinity results showed reduction in HS retention and increase in fouling with increasing salinity from 10,000 to 25,000 ppm NaCl using P005F UF membrane. No further reduction in retention or increase in fouling was experienced when salinity was increased to 35,000 ppm NaCl, while NF270 NF membrane experienced reduced retention and increased fouling throughout the studied salinity range. Finally, TMP did neither affect HS retention nor NF270 fouling, but increased P005F fouling.

[1]  N. Hilal,et al.  Characterization and retention of UF membranes using PEG, HS and polyelectrolytes , 2007 .

[2]  John McArdle,et al.  UF pretreatment for SWRO: pilot studies , 2005 .

[3]  Steve Siverns,et al.  UF membranes for RO desalination pretreatment , 2005 .

[4]  P. Chiang,et al.  Effects of polyelectrolytes on reduction of model compounds via coagulation. , 2005, Chemosphere.

[5]  O. Bayat,et al.  Application of a flocculation–ultrafiltration process for bacteria (Desulfovibrio desulfuricans) removal from industrial plant process water , 2004 .

[6]  G. Newcombe,et al.  Characterization of natural organic matter fractions separated by ultrafiltration using flow field-flow fractionation. , 2004, Water research.

[7]  Johannes S. Vrouwenvelder,et al.  Tools for fouling diagnosis of NF and RO membranes and assessment of the fouling potential of feed water , 2003 .

[8]  Mohammad Nurul Alam Hawlader,et al.  An experiment with different pretreatment methods , 2003 .

[9]  Myong-jin Yu,et al.  Fouling characteristics of NF and RO operated for removal of dissolved matter from groundwater. , 2003, Water research.

[10]  C. Vandecasteele,et al.  Evaluation of parameters describing flux decline in nanofiltration of aqueous solutions containing organic compounds , 2002 .

[11]  A. Fane,et al.  Charge effects in the fractionation of natural organics using ultrafiltration. , 2002, Environmental science & technology.

[12]  G Amy,et al.  Cleaning strategies for flux recovery of an ultrafiltration membrane fouled by natural organic matter. , 2001, Water research.

[13]  Rüdiger Knauf,et al.  Process water production from river water by ultrafiltration and reverse osmosis , 2000 .

[14]  S K Kam,et al.  The interaction of humic substances with cationic polyelectrolytes. , 2000, Water research.

[15]  Andrea I. Schäfer,et al.  Microfiltration of colloids and natural organic matter , 2000 .

[16]  Kimberly L. Jones,et al.  Protein and humic acid adsorption onto hydrophilic membrane surfaces: effects of pH and ionic strength , 2000 .

[17]  K. Glucina,et al.  Assessment of UF pretreatment prior RO membranes for seawater desalination , 1999 .

[18]  Jaeweon Cho,et al.  MEMBRANE FILTRATION OF NATURAL ORGANIC MATTER: INITIAL COMPARISON OF REJECTION AND FLUX DECLINE CHARACTERISTICS WITH ULTRAFILTRATION AND NANOFILTRATION MEMBRANES , 1999 .

[19]  Maaret Kulovaara,et al.  Effects of aquatic humic substances on a hydrophobic ultrafiltration membrane , 1999 .

[20]  James S. Taylor,et al.  Pilot scale microfiltration at Manitowoc , 1998 .

[21]  J. Hofman,et al.  Biofouling of membranes for drinking water production , 1998 .

[22]  J. Hofman,et al.  Integrated multi-objective membrane systems for surface water treatment : pretreatment of reverse osmosis by conventional treatment and ultrafiltration , 1998 .

[23]  Ata M. Hassan,et al.  A new approach to membrane and thermal seawater desalination processes using nanofiltration membranes (Part 1) , 1998 .

[24]  Menachem Elimelech,et al.  Chemical and physical aspects of natural organic matter (NOM) fouling of nanofiltration membranes , 1997 .

[25]  W. P. Ball,et al.  NANOFILTRATION OF NATURAL ORGANIC MATTER: pH AND IONIC STRENGTH EFFECTS , 1997 .

[26]  J. I. Arribas,et al.  Mass transfer coefficient and retention of PEGs in low pressure cross-flow ultrafiltration through asymmetric membranes , 1995 .

[27]  C. O'melia,et al.  Removal of humic substances by coagulation , 1999 .

[28]  Thomas Højlund Christensen,et al.  CHARACTERIZATION OF THE DISSOLVED ORGANIC CARBON IN LANDFILL LEACHATE-POLLUTED GROUNDWATER , 1998 .

[29]  L. Rahm,et al.  Changes in molecular weight of humic substances in the Gulf of Bothnia , 1996 .

[30]  G. Alaerts,et al.  Flocculation of brackish water from a tidal river , 1981 .