Effect of pretreatment on surface water nanofiltration

An integrated membrane system pilot study compared microfiltration (MF), Ultrafiltration (UF), and conventional treatment as pretreatment strategies for surface water nanofiltration (BF) using spiral wound elements. MF and UF pretreatment resulted in lower NF fouling rates and longer cleaning intervals compared with those measured following conventional treatment. NF fouling rates evaluated under a wide range of hydrodynamic conditions following conventional treatment suggest NF fouling is more influenced by permeate flux than by feedwater recovery. NF was shownto be capable of meeting all current and anticipated trihalomethane and haloacetic acid regulations.

[1]  R. Scott Summers,et al.  Evaluating NF for DBP control with the RBSMT , 1995 .

[2]  F. Digiano,et al.  Influence of NOM composition on nanofiltration , 1996 .

[3]  G. Amy,et al.  Comparing Ozonation and Membrane Separation for Color Removal and Disinfection By‐product Control , 1991 .

[4]  J. C. Schippers,et al.  The modified fouling index, a method of determining the fouling characteristics of water , 1980 .

[5]  Siddharth G. Chatterjee,et al.  Fluid flow in an idealized spiral wound membrane module , 1986 .

[6]  Keith E. Carns,et al.  Influence of Bromide on Low‐Pressure Membrane Filtration for Controlling DBPs in Surface Waters , 1993 .

[7]  Mark R. Wiesner,et al.  Slip at a uniformly porous boundary: effect on fluid flow and mass transfer , 1992 .

[8]  Steven J. Duranceau,et al.  Cost and Performance of a Membrane Pilot Plant , 1989 .

[9]  James S. Taylor,et al.  Applying Membrane Processes to Groundwater Sources for Trihalomethane Precursor Control , 1987 .

[10]  Georges Belfort,et al.  Membrane modules: comparison of different configurations using fluid mechanics☆ , 1988 .

[11]  Michael T. Brunelle.  Colloidal fouling of reverse osmosis membranes , 1980 .

[12]  J. Laîné,et al.  Mechanism of Cryptosporidium, Giardia, and MS2 virus removal by MF and UF , 1995 .

[13]  P. Singer,et al.  Chlorination of humic materials: byproduct formation and chemical interpretations , 1990 .

[14]  H. Ruiz,et al.  Selecting membranes for removing NOM and DBP precursors , 1994 .

[15]  James S. Taylor,et al.  DBP Control by Nanofiltration: Cost and Performance , 1992 .