REVIEW OF TWO DECADES OF EXPERIENCE WITH TF/SC PROCESS

The trickling filter solids contact (TF/SC) process is now over 20 years old, having been first demonstrated successfully in 1979 at Corvallis, Oreg. Design and operating concepts have evolved significantly since the first generation of plants. The purpose of this paper is to document the changes that have occurred since prior reviews. Data from four large plants (Santa Cruz, Littleton/Englewood, Central Valley, and Annacis Island) are used for illustration. The basis of the original peer reviewed U.S. EPA definition of the TF/SC process is reviewed. Pilot-scale and plant-scale research coupled with advanced analysis tools had allowed the overall horizons of the TF/SC process to be expanded, such that higher loadings have been obtained. For instance, use of modern plastic media has allowed the criterion that the majority of the biochemical oxygen demand be removed on the trickling filter while sustaining high total organic loadings. Owing to the features of the flocculator-clarifier and the superior thick...

[1]  G. Daigger,et al.  Of: Full-scale evaluation of factors affecting the performance of anoxic selectors, W.L. Marten, G.T. Daigger, 69, 1272 (1997) , 1998 .

[2]  R. N. Matasci,et al.  Full-scale studies of the trickling filter/solids contact process , 1986 .

[3]  Denny S. Parker,et al.  Making a trickling filter/solids contact process work for cold weather nitrification and phosphorus removal , 1998 .

[4]  Bruce E. Logan,et al.  Engineering implications of a new trickling filter model , 1987 .

[5]  R. N. Matasci,et al.  Upgrading Biological Filter Effluents Using the TF/SC Process , 1993 .

[6]  Bruce E. Logan,et al.  Molecular Size Distributions of Dissolved Organic Matter in Wastewater Transformed by Treatment in a Full‐Scale Trickling Filter , 2000 .

[7]  B. Logan,et al.  A fundamental model for trickling filter process design , 1987 .

[8]  R. M. M. S. Thesis.  STUDY OF DRYING PROCESS OF GRAPES AND GARLIC IN A PILOT PLANT , 1999 .

[9]  D. S. Parker,et al.  Trickling filter/solids contact performance with rock filters at high organic loadings , 1988 .

[10]  Glen T. Daigger,et al.  Full‐scale evaluation of factors affecting the performance of anoxic selectors , 1997 .

[11]  T. M. Keinath,et al.  Influence of process loading intensity on sludge clarification and thickening characteristics , 1979 .

[12]  T. M. Keinath,et al.  Relationship between Activated Sludge Flocculation Characteristics and Cell-Surface Polysaccharide Concentration , 1992 .

[13]  Dan P. Morris,et al.  Efficiences of Advanced Waste Treatment Obtained with Upgraded Trickling Filters , 1980 .

[14]  P. R. Karr,et al.  Effect of low dissolved oxygen concentration on effluent turbidity , 1984 .