REMOVAL OF TASTE- AND ODOR-CAUSING COMPOUNDS BY BIOFILMS GROWN ON HUMIC SUBSTANCES.

Laboratory experiments showed that biodegradation of tasteand odor-causing compounds by biolfilms grown on natural humic materials is feasible. Although the mineralization of peat fulvic acid (PFA) was relatively low (about 10 percent), long-term application of the PFA resulted in a significant amount of biofilm mass in the reactor and allowed the secondary utilization of trace levels of taste and odor compounds. These results suggest that biofilms grown on natural organic materials can play an important role in removing taste and odor compounds during water treatment. Examples of drinking water treatment processes that allow good biofilm accumulation are granular activated carbon, sand filters, river bank filtration, submerged fixed-bed reactors, and fluidized-bed reactors.

[1]  Alfredo Ang H.-S.,et al.  Probability concepts in engineering planning and design, vol i : basic principles , 1979 .

[2]  M. Alexander,et al.  Kinetics of mineralization of phenols in lake water , 1986, Applied and environmental microbiology.

[3]  V. L. Snoeyink,et al.  2-Methylisoborneol, improved synthesis and a quantitative gas chromatographic method for trace concentrations producing odor in water , 1977 .

[4]  Gary A. Burlingame,et al.  A case study of geosmin in Philadelphia's water , 1986 .

[5]  M. McGuire,et al.  Air Stripping of Taste and Odor Compounds From Water , 1984 .

[6]  Francis M. Middleton,et al.  Chlorine Derivatives of Phenol Causing Taste and Odor , 1959 .

[7]  Eun Namkung,et al.  Secondary utilization of trace organics by biofilms on porous media , 1983 .

[8]  Perry L. McCarty,et al.  Evaluation of steady‐state‐biofilm kinetics , 1980 .

[9]  G. J. Piet,et al.  Taste as an Indicator for Drinking Water Quality , 1980 .

[10]  S. D. Lin,et al.  Tastes and odors in water supplies: A review , 1977 .

[11]  J. K. G. Silvey,et al.  Studies on Microbiotic Cycles in Surface Waters , 1964 .

[12]  Vernon L. Snoeyink,et al.  Achieving Biologically Stable Drinking Water , 1984 .

[13]  E. A. Sigworth.  Control of Odor and Taste in Water Supplies , 1957 .

[14]  William C. Lauer.  Denver's Seasonal Odor Problem: An Unusual, Cost‐Free Solution , 1978 .

[15]  Heinrich Sontheimer,et al.  Experience With Riverbank Filtration Along the Rhine River , 1980 .

[16]  L. L. Medsker,et al.  Odorous compounds in natural waters. 2-exo-Hydroxy-2-methylbornane, the major odorous compound produced by several actinomycetes , 1969 .

[17]  Ralph L. Evans,et al.  Odor Studies of Three Illinois Impoundments , 1981 .

[18]  Latha V. Narayan,et al.  Biological Control: Isolation and Bacterial Oxidation of the Taste‐and‐Odor Compound Geosmin , 1974 .

[19]  H. C. Alexander,et al.  Aqueous odor and taste threshold values of industrial chemicals , 1982 .

[20]  Vernon L. Snoeyink,et al.  Humic substances removal by activated carbon , 1980 .

[21]  Wilson H. Tang,et al.  Probability concepts in engineering planning and design , 1984 .

[22]  A. E. Greenberg,et al.  Standard methods for the examination of water and wastewater : supplement to the sixteenth edition , 1988 .

[23]  P. Persson.  Sensory properties and analysis of two muddy odour compounds, geosmin and 2-methylisoborneol, in water and fish , 1980 .

[24]  Cordelia J. Hwang,et al.  Closed-loop stripping analysis as a tool for solving taste and odor problems , 1981 .

[25]  Martin Reinhard,et al.  Trace organics in groundwater , 1981 .

[26]  Martin Jekel,et al.  The Mülheim Process , 1978 .

[27]  N. Wolfe,et al.  Effect of Phenol Molecular Structure on Bacterial Transformation Rate Constants in Pond and River Samples , 1983, Applied and environmental microbiology.

[28]  Eun Namkung.  Kinetics and Mechanisms of Low-Concentration - Multisubstrate Utilization by Biofilms (Soluble Microbial Products, Steady-State Secondary, Oligotrophic Bacteria, Biodegradation of Trace Organics, Modeling) , 1985 .

[29]  Vernon L. Snoeyink,et al.  Activated Carbon Adsorption of the Odorous Compounds 2‐Methylisoborneol and Geosmin , 1977 .

[30]  N. N. Gerber.  Volatile substances from actinomycetes: their role in the odor pollution of water. , 1979, CRC critical reviews in microbiology.

[31]  Cordelia J. Hwang,et al.  An Early Warning System for Detecting Earthy-Musty Odors in Reservoirs , 1983 .

[32]  G. J. Piet,et al.  Organic Water Quality Changes During Sand Bank and Dune Filtration of Surface Waters in The Netherlands , 1980 .

[33]  M. McGuire,et al.  Oxidation of Five Earthy-Musty Taste and Odor Compounds , 1986 .

[34]  T. Nieuwstad,et al.  The fate of fulvic acids during water treatment , 1979 .

[35]  Vernon L. Snoeyink,et al.  The Removal of Low Levels of Phenol by Activated Carbon in The Presence of Biological Activity , 1980 .

[36]  G. J. Piet,et al.  Cause and identification of taste and odour compounds in water. , 1974, The Science of the total environment.

[37]  Vernon L. Snoeyink,et al.  Activated carbon adsorption of humic substances , 1981 .

[38]  L. L. Medsker,et al.  Odorous compounds in natural waters. An earthy-smelling compound associated with blue-green algae and actinomycetes , 1968 .

[39]  R. Safferman,et al.  Earthy-smelling substance from a blue-green alga. , 1967, Environmental science & technology.

[40]  Robert A. Baker.  Threshold Odors of Organic Chemicals , 1963 .

[41]  Dirk van der Kooij,et al.  Determining the concentration of easily assimilable organic carbon in drinking water , 1982 .

[42]  Eun Namkung,et al.  Soluble microbial products (SMP) formation kinetics by biofilms , 1986 .

[43]  B. Rittmann,et al.  In situ determination of kinetic parameters for biofilms: Isolation and characterization of oligotrophic biofilms , 1986, Biotechnology and bioengineering.

[44]  Robert S. Boethling,et al.  Effect of Concentration of Organic Chemicals on Their Biodegradation by Natural Microbial Communities , 1979, Applied and environmental microbiology.

[45]  Eun Namkung,et al.  Predicting removal of trace organic compounds by biofilms , 1983 .