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Wastewater Applications of American Tripoli RONALD F. LAYTON, Chairman ROBERT R. WRIGHT, Instructor The Water and Wastewater Technical School Neosho, Missouri INTRODUCTION American Tripoli was discovered in 1869 and is a material occurring in relatively large abundance in Southwestern Missouri, and Northeastern Oklahoma. Estimates of the total amount of available Tripoli represents greater than one million tons. Early uses of Tripoli have included buffing compounds and water filters. Over a century ago a stone filter was first carved from Tripoli for use as a water filter. Although the first application of this quarried material in the water and wastewater fields occurred many years ago, it was only during the summer of 1970 that the American Tripoli Division of the Carborundum Company of Seneca, Missouri, and the Water & Wastewater Technical School began investigations into possible water and wastewater treatment applications. Earlier work at the Niagara Water Department has shown American Tripoli to be useful as a settling aid in a full scale operation for the past two years and results of these studies will be presented in a subsequent paper, to be given at the American Water Works Association Meeting of New York State in the near future. The filtering characteristics of Tripoli have been evaluated in filter stone applications and are superior to diatomaceous earth types with 1.7 gallons per minute per square foot observed for Tripoli, as compared to 0.42 gpm/sq ft for diatomaceous earth. PROPERTIES OF AMERICAN TRIPOLI Table I lists a complete chemical analysis of the two commonly quarried forms of Tripoli—rose and cream. The chief component in the material being silica with various minor constituents as listed. The specific weight of Tripoli is 55 pounds per cubic foot for once ground Tripoli as compared to 11 pounds per cubic foot for diatomaceous earth. The particle size distribution of Tripoli is shown in Figure 1 with data for diatomaceous earth included for comparison. Tripoli is abundantly available as an easy to handle solid material at a very low cost ($30/ton). 554
Object Description
Purdue Identification Number | ETRIWC197148 |
Title | Wastewater applications of American Tripoli |
Author |
Layton, Ronald F. Wright, Robert R. |
Date of Original | 1971 |
Conference Title | Proceedings of the 26th Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://earchives.lib.purdue.edu/u?/engext,19214 |
Extent of Original | p. 554-565 |
Series | Engineering extension series no. 140 |
Collection Title | Engineering Technical Reports Collection, Purdue University |
Repository | Purdue University Libraries |
Rights Statement | Digital object copyright Purdue University. All rights reserved. |
Language | eng |
Type (DCMI) | text |
Format | JP2 |
Date Digitized | 2009-06-25 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 554 |
Collection Title | Engineering Technical Reports Collection, Purdue University |
Repository | Purdue University Libraries |
Rights Statement | Digital object copyright Purdue University. All rights reserved. |
Language | eng |
Type (DCMI) | text |
Format | JP2 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Transcript | Wastewater Applications of American Tripoli RONALD F. LAYTON, Chairman ROBERT R. WRIGHT, Instructor The Water and Wastewater Technical School Neosho, Missouri INTRODUCTION American Tripoli was discovered in 1869 and is a material occurring in relatively large abundance in Southwestern Missouri, and Northeastern Oklahoma. Estimates of the total amount of available Tripoli represents greater than one million tons. Early uses of Tripoli have included buffing compounds and water filters. Over a century ago a stone filter was first carved from Tripoli for use as a water filter. Although the first application of this quarried material in the water and wastewater fields occurred many years ago, it was only during the summer of 1970 that the American Tripoli Division of the Carborundum Company of Seneca, Missouri, and the Water & Wastewater Technical School began investigations into possible water and wastewater treatment applications. Earlier work at the Niagara Water Department has shown American Tripoli to be useful as a settling aid in a full scale operation for the past two years and results of these studies will be presented in a subsequent paper, to be given at the American Water Works Association Meeting of New York State in the near future. The filtering characteristics of Tripoli have been evaluated in filter stone applications and are superior to diatomaceous earth types with 1.7 gallons per minute per square foot observed for Tripoli, as compared to 0.42 gpm/sq ft for diatomaceous earth. PROPERTIES OF AMERICAN TRIPOLI Table I lists a complete chemical analysis of the two commonly quarried forms of Tripoli—rose and cream. The chief component in the material being silica with various minor constituents as listed. The specific weight of Tripoli is 55 pounds per cubic foot for once ground Tripoli as compared to 11 pounds per cubic foot for diatomaceous earth. The particle size distribution of Tripoli is shown in Figure 1 with data for diatomaceous earth included for comparison. Tripoli is abundantly available as an easy to handle solid material at a very low cost ($30/ton). 554 |
Resolution | 300 ppi |
Color Depth | 8 bit |
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