Treatment of disinfection by‐product precursors

Formation of harmful disinfection by‐products (DBPs), of which trihalomethanes (THMs) and haloacetic acids (HAAs) are the major groups, can be controlled by removal of natural organic matter (NOM) before disinfection. In the literature, removal of precursors is variable, even with the same treatment. The treatment of DBP precursors and NOM was examined with the intention of outlining precursor removal strategies for various water types. Freundlich adsorption parameters and hydroxyl rate constants were collated from the literature to link treatability by activated carbon and advanced oxidation processes (AOPs), respectively, to physico‐chemical properties. Whereas hydroxyl rate constants did not correlate meaningfully with any property, a moderate correlation was found between Freundlich parameters and log KOW, indicating activated carbon will preferentially adsorb hydrophobic NOM. Humic components of NOM are effectively removed by coagulation, and, where they are the principal precursor source, coagulation may be sufficient to control DBPs. Where humic species remaining post‐coagulation retain significant DBP formation potential (DBPFP), activated carbon is deemed a suitable process selection. Anion exchange is an effective treatment for transphilic species, known for high carboxylic acid functionality, and consequently is recommended for carboxylic acid precursors. Amino acids have been linked to HAA formation and are important constituents of algal organic matter. Amino acids are predicted to be effectively removed by biotreatment and nanofiltration. Carbohydrates have been found to reach 50% of NOM in river waters. If the carbohydrates were to pose a barrier to successful DBP control, additional treatment stages such as nanofiltration are likely to be required to reduce their occurrence.

[1]  Jaeweon Cho,et al.  Membrane filtration of natural organic matter: factors and mechanisms affecting rejection and flux decline with charged ultrafiltration (UF) membrane , 2000 .

[2]  R. Summers,et al.  Disinfection By-product Formation and Control by Ozonation and Biotreatment , 1992 .

[3]  S. Richardson,et al.  Occurrence of a new generation of disinfection byproducts. , 2006, Environmental science & technology.

[4]  Bruce Jefferson,et al.  Introduction to Potable Water Treatment Processes , 2006 .

[5]  J. Croué,et al.  Peer Reviewed: Characterizing Aquatic Dissolved Organic Matter , 2003 .

[6]  Ronald A. Chadderton,et al.  Planning a Distribution System Flushing Program , 1993 .

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

[8]  T. Karanfil,et al.  Adsorption of Natural Organic Polyelectrolytes by Activated Carbon: A Size-Exclusion Chromatography Study , 1996 .

[9]  B. Jefferson,et al.  Seasonal variations in natural organic matter and its impact on coagulation in water treatment. , 2006, The Science of the total environment.

[10]  C. Tadanier,et al.  Dissolved Organic Matter Apparent Molecular Weight Distribution and Number-Average Apparent Molecular Weight by Batch Ultrafiltration , 2000 .

[11]  R. Desjardins,et al.  Removal of Amino Acids, Biodegradable Organic Carbon and Chlorine Demand by Biological Filtration in Cold Water , 1998 .

[12]  G. Buxton,et al.  Critical Review of rate constants for reactions of hydrated electrons, hydrogen atoms and hydroxyl radicals (⋅OH/⋅O− in Aqueous Solution , 1988 .

[13]  B. Jefferson,et al.  Magnetic ion-exchange resin treatment: impact of water type and resin use. , 2008, Water research.

[14]  B. Jefferson,et al.  Successful Removal of Algae through the Control of Zeta Potential , 2008 .

[15]  A. Jadas-Hécart.  Contribution à l'étude de la demande en chlore à long terme d'une eau potable : modélisation et identification de précurseurs organiques , 1989 .

[16]  U. Gunten,et al.  Factors controlling the formation of bromate during ozonation of bromide-containing waters , 1992 .

[17]  Ritchelita P. Galapate,et al.  Transformation of dissolved organic matter during ozonation: effects on trihalomethane formation potential. , 2001, Water research.

[18]  S. Chellam.  Effects of Nanofiltration on Trihalomethane and Haloacetic Acid Precursor Removal and Speciation in Waters Containing Low Concentrations of Bromide Ion , 2000 .

[19]  W. J. Cooper,et al.  Electron pulse radiolysis determination of hydroxyl radical rate constants with Suwannee River fulvic acid and other dissolved organic matter isolates. , 2007, Environmental science & technology.

[20]  B. Legube,et al.  Chlorination studies of free and combined amino acids , 1994 .

[21]  Wontae Lee,et al.  Dissolved organic nitrogen as a precursor for chloroform, dichloroacetonitrile, N-nitrosodimethylamine, and trichloronitromethane. , 2007, Environmental science & technology.

[22]  M. Mohseni,et al.  UV-H2O2 based AOP and its integration with biological activated carbon treatment for DBP reduction in drinking water. , 2007, Chemosphere.

[23]  G. Amy,et al.  Ozone enhanced removal of natural organic matter from drinking water sources , 1997 .

[24]  Peter M. Huck,et al.  BOM removal during biological treatment: A first-order model , 1994 .

[25]  Treavor H. Boyer,et al.  Removal of dissolved organic matter by anion exchange: effect of dissolved organic matter properties. , 2008, Environmental science & technology.

[26]  E. O’Loughlin,et al.  Molecular weight, polydispersity, and spectroscopic properties of aquatic humic substances. , 1994, Environmental science & technology.

[27]  M. Edwards.  Predicting DOC removal during enhanced coagulation , 1997 .

[28]  Treavor H. Boyer,et al.  Bench-scale testing of a magnetic ion exchange resin for removal of disinfection by-product precursors. , 2005, Water research.

[29]  V. Hahn,et al.  Proteins in natural waters and their relation to the formation of chlorinated organics during water disinfection. , 1988, Environmental Science and Technology.

[30]  H. Weinberg,et al.  Bromate in chlorinated drinking waters: occurrence and implications for future regulation. , 2003, Environmental science & technology.

[31]  B. Bergamaschi,et al.  Evaluation of specific ultraviolet absorbance as an indicator of the chemical composition and reactivity of dissolved organic carbon. , 2003, Environmental science & technology.

[32]  C. Vandecasteele,et al.  Influence of hydrophobicity on retention in nanofiltration of aqueous solutions containing organic compounds , 2005 .

[33]  E. Bouwer,et al.  Biodegradation of NOM: effect of NOM source and ozone dose , 1995 .

[34]  E. Thurman,et al.  Biogeochemistry of aquatic humic substances in Thoreau's Bog, Concord, Massachusetts , 1985 .

[35]  P C Singer.  Mechanisms of organic halide formation during fulvic acid chlorination and implications with respect to preozonation , 1985 .

[36]  P. Bérubé,et al.  Removal of disinfection by-product precursors with ozone-UV advanced oxidation process. , 2005, Water research.

[37]  J. Jacangelo,et al.  Selected processes for removing NOM: an overview , 1995 .

[38]  T. Karanfil,et al.  Adsorption of Organic Macromolecules by Granular Activated Carbon. 2. Influence of Dissolved Oxygen , 1996 .

[39]  Jean-Philippe Croué,et al.  Characterizing aquatic dissolved organic matter. , 2003, Environmental science & technology.

[40]  V. Belgiorno,et al.  DBPs formation and toxicity monitoring in different origin water treated by ozone and alum/PAC coagulation , 2007 .

[41]  Carlo Vandecasteele,et al.  Removal of pollutants from surface water and groundwater by nanofiltration: overview of possible applications in the drinking water industry. , 2003, Environmental pollution.

[42]  G. Amy,et al.  Relationships between the structure of natural organic matter and its reactivity towards molecular ozone and hydroxyl radicals , 1999 .

[43]  C. J. Johnson,et al.  Impact of a magnetic ion exchange resin on ozone demand and bromate formation during drinking water treatment. , 2003, Water research.

[44]  C revised by John Crittenden,et al.  Water treatment principles and design , 2012 .

[45]  U von Gunten,et al.  Bromate Formation during Ozonization of Bromide-Containing Waters: Interaction of Ozone and Hydroxyl Radical Reactions. , 1994, Environmental science & technology.

[46]  P. Singer,et al.  Factors influencing the formation and relative distribution of haloacetic acids and trihalomethanes in drinking water. , 2003, Environmental science & technology.

[47]  Bernard Legube,et al.  The ozonation of organic halide precursors: effect of bicarbonate , 1986 .

[48]  T. Karanfil,et al.  Role of Granular Activated Carbon Surface Chemistry on the Adsorption of Organic Compounds. 1. Priority Pollutants , 1999 .

[49]  G. Amy,et al.  MEMBRANES FOR THE CONTROL OF NATURAL ORGANIC MATTER FROM SURFACE WATERS , 2000 .

[50]  J. Rook.  Chlorination reactions of fulvic acids in natural waters , 1977 .

[51]  Diane M. McKnight,et al.  Isolation of hydrophilic organic acids from water using nonionic macroporous resins , 1992 .

[52]  Yin-Tak Woo,et al.  Haloacetonitriles vs. regulated haloacetic acids: are nitrogen-containing DBPs more toxic? , 2007, Environmental science & technology.

[53]  A. Yavich,et al.  Use of Ozonation and FBT to control THM precursors , 2003 .

[54]  T. Leisinger,et al.  Microbial degradation of xenobiotics and recalcitrant compounds , 1981 .

[55]  R. Scott Summers,et al.  The impact of preozonation and biodegradation on disinfection by-product formation , 1992 .

[56]  B. Jefferson,et al.  Impact of fractional character on the coagulation of NOM , 2006 .

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

[58]  Raymond D. Letterman,et al.  Water quality and treatment , 2012 .

[59]  P. Singer.  Control of Disinfection By‐Products in Drinking Water , 1994 .

[60]  L. Katz,et al.  Sorption phenomena in subsurface systems: Concepts, models and effects on contaminant fate and transport , 1991 .

[61]  Katya Bilyk,et al.  Enhanced coagulation using a magnetic ion exchange resin. , 2002, Water research.

[62]  B. Legube,et al.  Organics in NF permeate , 1996 .

[63]  R. Summers,et al.  Haloacetic acid and trihalomethane formation from the chlorination and bromination of aliphatic beta-dicarbonyl acid model compounds. , 2008, Environmental science & technology.

[64]  Philip C. Singer,et al.  Effectiveness of coagulation, ozonation, and biofiltration in controlling DBPs , 2002 .

[65]  E. M. Thurman,et al.  Organic Geochemistry of Natural Waters , 1985, Developments in Biogeochemistry.

[66]  Alan A. Stevens,et al.  Formation and Control of Non‐Trihalomethane Disinfection By‐products , 1989 .

[67]  H. García,et al.  Carbohydrates as trihalomethanes precursors. Influence of pH and the presence of Cl(-) and Br(-) on trihalomethane formation potential. , 2008, Water research.

[68]  K. Linge,et al.  Removal of natural organic matter by ion exchange. , 2002, Water research.

[69]  H. D. Stensel,et al.  Wastewater Engineering: Treatment and Reuse , 2002 .

[70]  G. Newcombe,et al.  Characterization of Natural Organic Matter Using High Performance Size Exclusion Chromatography , 1999 .

[71]  L. Kaplan,et al.  Chemical composition of biodegradable dissolved organic matter in streamwater , 1997 .

[72]  Alicia C. Diehl,et al.  Effect of Ozone Dosage and Subsequent Biodegradation on Removal of DBP Precursors , 1993 .