Moisture Distribution in Sludge: Effects of Polymer Conditioning
Publication: Journal of Environmental Engineering
Volume 125, Issue 4
Abstract
This work investigated the effects of cationic polymer flocculation on the continuous moisture distributions of two sludges by means of combined thermal gravitational analysis and differential thermal analysis tests. At a specific moisture content, the solid-water bond strength first decreases with increasing polymer dose, after it reaches a charge neutralization point, and then increases in the overdose regime. Effects of polymer conditioning on the moisture distribution in sludge, as well as the correlation with the bound water data measured by expression and drying, were discussed.
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References
1.
Chang, I. L., and Lee, D. J. ( 1998). “Ternary expression stage of biological sludge dewatering.” Water Res., 32, 905–914.
2.
Chang, I. L., Chu, C. P., Lee, D. J., and Huang, C. ( 1997a). “Effects of polymer dosage on filtration followed by expression characteristics of clay slurries.” J. Colloid and Interface Sci., 185, 335–342.
3.
Chang, I. L., Chu, C. P., Lee, D. J., and Huang, C. ( 1997b). “Effects of alum dose on filtration followed by expression characteristics of clay slurries.” Envir. Sci. and Technol., 31, 1313–1319.
4.
Chen, G. W., Chang, I. L., Hung, W. T., Lee, S. F., and Lee, D. J. (1997). “Continuous classification of moisture content in waste activated sludge.”J. Envir. Engrg., ASCE, 123, 253–258.
5.
Chen, G. W., Lin, W. W., and Lee, D. J. ( 1996). “Use of capillary suction time (CST) for estimating sludge dewaterability.” Water Sci. and Technol., 34, 443–448.
6.
Colin, F., and Gazbar, S. ( 1995). “Distribution of water in sludges in relation to their mechanical dewatering.” Water Res., 29, 2000–2005.
7.
Dick, R. I., and Drainville, M. R. ( 1995). Comments on “The role of water in sludge dewatering. Water Envir Res., 66, 4–11.” Water Envir. Res., 67, 251.
8.
Ewing, G. W. ( 1985). Instrumental methods of chemical analysis, 5th Ed., McGraw-Hill, New York, 429–432.
9.
Haschemeyer, A. E. M., DeVries A. L., and Guschibauer, W. ( 1977). “Water binding by antifreeze glycoproteins from antarctic fish.” Nature, 269, 87–88.
10.
Herwijn, A. J. M. ( 1996). “Fundamental aspects of sludge characterization.” PhD dissertation, Eindhoven University of Technology, The Netherlands.
11.
Herwijn, A. J. M., Van Dijke, D. Q. A., La Heij, E. J., Coumans, W. J. and Kerkhof, P. J. A. M. ( 1992). “The solid-water bound strength in sewage sludge.” AIChE Annu. Meeting, American Institute of Chemical Engineers, New York, 1073–1078.
12.
Heukelekian, H., and Weisberg, E. ( 1956). “Bound water and activated sludge bulking.” Sewage and Industrial Wastes, 28, 558–574.
13.
Karr, P. R., and Keinath, T. M. ( 1978). “Influence of particle size on sludge dewaterability.” J. WPCF, 52, 1911–1930.
14.
Katsiris, N., and Kouzeli-Katsiri, A. ( 1987). “Bound water content of biological sludge in relation to filtration and dewatering.” Water Res., 21, 1319–1327.
15.
Kawasaki, K., Matsuda, A., Ide, T., and Murase, T. ( 1990). “Measurement of cell density and floc property of excess activated sludge conditioned by freezing and thawing process, using centrifugal settling.” Kagaku Kogaku Ronbunsyu, 16, 401–403.
16.
Kawasaki, K., Matsuda, A., and Mizukawa, Y. ( 1991). “Compression characteristics of excess activated sludges treated by freezing-and-thawing process.” J. Chem Engrg. Jpn., 24, 743–748.
17.
Knocke, W. R., Dishman, C. M., and Miller, C. F. ( 1993). “Measurement of chemical sludge floc density and implications related to sludge dewatering.” Water Envir. Res., 65, 735–743.
18.
La Heij, E. J., Kerkhof, P. J. A. M., Herwijn, A. J. M., and Coumans, W. J. ( 1996). “Fundamental aspects of sludge filtration and expression.” Water Res., 30, 697–703.
19.
Laidler, K. J., and Meiser, J. H. ( 1982). Physical chemistry . Penjamin/Cummings Publishing, London.
20.
Lee, D. J. ( 1994a). “Floc structure and bound water content in excess activated sludges.” J. Chinese Inst. Chem. Engrs., 25, 201–207.
21.
Lee, D. J. ( 1994b). “Measurement of bound water in sludges: The use of centrifugal settling method.” J. Chem. Tech. Biotechnol. 61, 139–144.
22.
Lee, D. J. ( 1996a). “Interpretation of bound water measured via dilatometric technique.” Water Res., 30, 2230–2232.
23.
Lee, D. J. ( 1996b). “Moisture distribution and removal efficiency of waste activated sludge.” Water Sci. and Technol., 33, 269–272.
24.
Lee, D. J., and Hsu, Y. H. ( 1994). “Fast freeze/thaw process on excess activated sludges: Floc structure and sludge dewaterability.” Envir. Sci. and Technol., 28, 1444–1449.
25.
Lee, D. J., and Hsu, Y. H. ( 1995). “Measurement of bound water in sludges: A comparative study.” Water Envir. Res., 67, 310–317.
26.
Lee, D. J., and Lee, S. F. ( 1995). “Measurement of bound water in sludge: Use of differential scanning calorimetry (DSC).” J. Chem. Tech. Biotechnol., 62, 359–365.
27.
Lee, H. B., John, M. S., and Andrade, J. D. ( 1975). “Nature of water in synthetic hydrogels.” J. Colloid and Interface Sci., 51, 225–231.
28.
Lewicki, P. P., Busk, G. C., and Labuza, T. P. ( 1978). “Measurement of gel water-binding capacity of gelatin, potato starch, and carrageenan gels by suction pressure.” J. Colloid and Interface Sci., 64, 501–509.
29.
Matsuda, A., Kawasaki, K., and Mizukawa, Y. ( 1992). “Measurement of bound water in excess activated sludges and effect of freezing and thawing process on it.” J. Chem. Engrg. Jpn., 25, 100–103.
30.
McCabe W. L., Smith, J. C., and Harriott, P. ( 1993). Unit operations of chemical engineering, 5th Ed., McGraw-Hill, New York.
31.
Mitani, T., Unno, H., and Akehata, T. ( 1983). “A structure model of activated sludge flocs.” Suishitsu Odaku Kenkyuu, 6, 69–75.
32.
Moudgil, B. M., and Shah, B. D. ( 1986). “Selection of flocculants for solid-liquid separation processes.” Advances in solid-liquid separation. H. S. Muralidhara, ed., Battelle Press, Columbus, Ohio, p. 191.
33.
Robinson, J., and Knocke, W. R. ( 1992). “Use of dilatometric and drying techniques for assessing dewatering characteristics.” Water Envir. Res., 64, 60–68.
34.
Sato, H., Eto, S., and Suzuki, H. ( 1980). “Studies of the state of water in sludges with high resolution NMR.” Nippon Kagaku Kaishi, 3, 354–358.
35.
Sato, H., Eto, S., and Suzuki, H. ( 1982). “Relationship between amount of bound water and dewatering characteristics of alum sludges.” Fil. Sep., Nov/Dec, 492–497.
36.
Smith, J. C., and Vesilind, P. A. ( 1995). “Dilatometric measurement of bound water in wastewater sludge.” Water Res., 29, 2621–2626.
37.
Smollen, M. ( 1990). “Evaluation of municipal sludge drying and dewatering with respect to sludge volume reduction.” Water Sci. and Technol, 22, 153–160.
38.
Tsang, K. R., and Vesilind, P. A. ( 1990). “Moisture distribution in sludges.” Water Sci. and Technol., 22, 135–142.
39.
Vesilind, P. A. ( 1994). “The role of water in sludge dewatering.” Water Envir. Res., 66, 4–11.
40.
Wu, C., Huang, C., and Lee, D. J. ( 1997). “Effects of polymer dosage on alum sludge dewatering characteristics and physical properties.” Colloids Surf. A., 122, 89–96.
41.
Wu, C., Huang, C., and Lee, D. J. ( 1998). “Bound water content and water binding strength on sludge floc.” Water Res., 32, 900–904.
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Received: Mar 10, 1998
Published online: Apr 1, 1999
Published in print: Apr 1999
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