Browse > Article

Dewatering Characteristics for Physico-chemical Properties with Sewage Sludge  

Lee, Chang-Han (Department of Environmental Engineering, Catholic University of Pusan)
Ahn, Kab-Hwan (Department of Environmental Administration, Catholic University of Pusan)
Song, Seung-Koo (Department of Chemical Engineering, Pusan National University)
Publication Information
KSBB Journal / v.25, no.1, 2010 , pp. 41-46 More about this Journal
Abstract
In this study, we found that dewatering properties were related with physico-chemical properties such as sludge concentration, pH, and zeta potential with sewage sludge, Ionic contents in digested sludge were in the order of $Ca^{2+}$ (14.2 mg/g) > $Mg^{2+}$ (1.9 mg/g) > $Na^+$ (1.4 mg/g) > $K^+$ (1.0 mg/g). Divalent ion more than monovalent have influenced on physico-chemical and dewatering properties. Floc size distribution in activated (AS) and digested sludge (DS) increased on lower pH range to be near isoelectric point and than specific resistance to filtration (SRF) decreased. A linear increase in SRF ($5.25\times10^{13}\sim2.86\times10^{14}$ m/kg in AS and $6.89\times10^{14}\sim1.09\times10^{15}$ m/kg in DS) was observed throughout low concentration range of 1230~9960 mg/L in AS and 2700~5400 mg/L in DS.
Keywords
sewage sludge; zeta potential; SRF; floc; dewatering;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Liao, B. Q., D. G. Allen, I. G. Droppo, G. G. Leppard, and S. N. Liss (2001) Surface properties of sludge and their role in bioflocculation and settleability. Wat. Res. 35: 339-350.   DOI   ScienceOn
2 Sewage Sludge Production http://www.me.go.kr/book/html/Wastes&Recycling/5-l0.htm.(2007).
3 Kim, K. S. (2007) The present state and improvement of sludge disposal from sewage treatment plants. J. of Kor. Soc. of Envi. Eng. 29: 8-16.   과학기술학회마을
4 Higgins, M. J. and J. T. Novak (1997) The effect of cations on the settling and dewatering of activated sludges: laboratory results. Wat. Environ. Res. 69: 215-224.   DOI   ScienceOn
5 Drozd, C. and J. Schwartzbrod (1996) Hydrophobic and electrostatic cell surface properties of Cryptosporidium parvum. Appl. Environ. Microbio. 62: 1227-1232.
6 Bruus, J. H., J. R. Christensen, and H. Rasmussen (1993) Anarobic storage of activated sludge: effects on conditioning and dewatering performance. Wat. Sci. Tech. 28: 109-116.
7 Ministry of Environment (2002) Environment Laws: Wastes & Recycling. Act No. 6627.
8 Kart, P. R. and T. Keinath (1978) Influence of particle size on sludge dewaterability. J. of WPCF. 50: 1911-1930.
9 Rasmussen, H., B. J. Hojgaard, K. Keiding, and P. H. Nielsen (1994) Observations on dewaterability and physical chemical and microbiological changes in anaerobically stored activated sludge from a nutrient removal plant. Wat. Res. 28: 417-425.   DOI   ScienceOn
10 Sorensen, B. L. and R. J. Wakeman (1996) Filtration characterization and specific surface area measurement of activated sludge by rhodamine B adsorption. Wat. Res. 30: 115-121.   DOI   ScienceOn
11 Urbain, V., J. Manem, and J. C. Block (1993) Bioflocculation in activated sludge: an analytic approach. Wat. Res. 27: 829-838.   DOI   ScienceOn