Preliminary research on the effect of lime addition on the rheology of sludge

• Autorzy: Malczewska B.
• Języki publikacji: EN

Abstrakty

EN

Samples of excess sludge from wastewater treatment plants were investigated in order to determine the dependence of rheological parameters of sewage sludge on lime addition. Hydration of the sludge is one of its main features which determine sludge management and waste disposal cost. The rheological behavior of sludge is a key characteristic, since it determines the treatment processes. This research has evaluated the use of rheological properties for characterization and control of sludge and lime mixture flow behaviour. A laboratory investigation was conducted using rotating coaxial cylinder and several different gravimetric oncentrations of the investigated sludge. In order to describe the rheological characteristics, the 3-parameter Herschel-Bulkley model was applied. Rheological characterization is of great importance in sludge management, both in terms of biomass dewatering and stabilizing properties, and in terms of design parameters for sludge handling operations.

Słowa kluczowe

EN

sludge treatment; lime; rheology; flow curve; rheological model; rheological parameter; waste water treatment; sewage treatment product; hydration

• Wydawca: -
• Czasopismo: Infrastruktura i Ekologia Terenów Wiejskich
• Rocznik: 2011
• Numer: 11
• Opis fizyczny: p.109-117,fig.,ref.

Twórcy

autor

Malczewska B.

• University of Environmental and Life Sciences in Wroclaw, Pl.Grunwaldzki 24, 50-365 Wroclaw, Poland

Bibliografia

• Abu-Orf M. M., Dentel A. Effect of mixing on rheological characteristics of conditioned sludge: full-scale studies. Water Science and Technology. 36(11), pp. 51-60, 1997.
• Abu- Orf, M.M., Walker, C.A. and Dentel, S.K. Centrate viscosity for continuous monitoring of polymer feed in dewatering applications. Advances in Environmental Research, 7(3), pp. 687–694, 2003.
• Aranowski R., Hupka R., Jungnickel Ch. Zmiany właściwości reologicznych podczas fermentacji metanowej osadu czynnego. Physicochemical Problems of Mineral Processing, 44, 13-22, 2010, http://www.minproc.pwr.wroc.pl/journal
• ASTM D 698, ASTM Standards on Soil Stabilization with Admixtures, Philadephia, PA, 1990.
• Ayol, A., Dentel, S.K. and Filibeli, A. Dual Polymer Conditioning of Water Treatment Residuals. Journal of Environmental Engineering, pp. 1132–1138, 2005.
• Bache, D.H. u. Papavasilopoulos, E.N. Viscous behaviour of sludge centrate in response to polymer conditioning, Wat. Res. 34(1), pp. 354–358, 2000.
• Battistoni P. Pre-treatment, measurement execution procedure and waste chacteristics in the rheology of sewage sludges and the digested organic fraction of municipal solid wastes, Water Science and Technology, 36(11), pp 33–41, 1997.
• Bień J., Matysiak B., Bień J. D. Wpływ dawki wybranych polielektrolitów na właściwości reologiczne osadów ściekowych, Inżynieria i Ochrona Środowiska, 4(1), pp. 27-39, 2001.
• (BLA), British Lime Association 2007 http://www.britishlime.org/downloads/stratlime.pdf
• Dentel S. K. Evaluation and role of rheological properties in sludge management, Water Science and Technology, 36(11), pp. 1-8, 1997.
• EPA, Lime Sludge Disposal, 2007, http://www.epa.state.oh.us/dsw/policy/04_22r.pdf
• Forster C. F. The rheological and physico-chemical characteristics of sewage sludges, Enzyme and microbical technology, 30(3), pp 340-345, 2002.
• Honey H., Pretorius W. Laminar flow pipe hydraulics of pseudoplastic-thixotropic sewage, Water Science and Technology, 26(1), pp. 19-25, 2000.
• Heywood N. How to reduce pipe friction in slurry flows, Hydraulic Conveying Association of South Africa, 7 April 2003, Indaba Conference Centre, 2008. http://www.aspentech.com /publication_files/Hydraulic_Conveying_Association.pdf
• Kempiński J., Malczewska B. Określenie modelu reologicznego osadów ściekowych, Acta Scientiarum Polonorum, Formatio Circumiectus, 4(1), pp. 1–9, 2005 [in polish]
• Kopp, J. and Dichtl, N. Prediction of full-scale dewatering by determining the water distribution of sewage sludge, Wat.Sci.Tech. 42(9), pp. 141-149, 2000.
• Laera G., Giordano C., A. Pollice A., Saturno D. Mininni G. Membrane bioreactor sludge rheology at different solid retention times Water Research, 41(18), pp. 4197-4203, 2007.
• Lotito, V., Spinosa, L., Mininni, G., Antonacci, R. The rheology of sewage sludge at different steps of treatment, Water Science and Technology, 36(11), pp. 79-85, 1997.
• Malczewska B. Sewage sludge rheological properties variability in dependence of drawing sludge samples at different times, Archiwum Ochrony Środowiska – Archives of Environmental Protection, 34(4), pp. 109-116, 2008.
• Malczewska B. Variability of rheological parameters in function of gravimetric concentration of sludge, Electronic Journal of Polish Agricultural Universities (EJPAU), 2009, www.ejpau.media.pl/volume12/issue1/art-07.html
• Mikkelsen, L.H. The shear sensitivity of activated sludge relations to filterability, rheology and surface chemistry. Colloids Surf. A: Phys. Eng. Aspects vol. 182, pp. 1–14, 2001.
• Moeller, G., Torres, L.G. Rheological characterization of primary and secondary sludges treated by both aerobic and anaerobic digestion. Bioresource Technol. vol. 61, pp. 207–211, 1997.
• Nagaoka, H., Ueda, S., Miya, A. Influence of bacterial extracellular polymers on the membrane separation activated sludge process. Water Science and Technology, 34(9), pp. 165–172, 1996.
• Sanin F. D. Effect of solution physical chemistry on the rheological properties of activated sludge, Water Science and Technology, 28(2), pp. 207-211, 2002.
• Sozański M. M. Charakterystyka laminarnego płynięcia osadów pokoagulacyjnych jako podstawa oceny parametrów ich transportu. Prace Naukowe Instytutu Inżynierii Sanitarnej i Wodnej Politechniki Wrocławskiej, vol. 60, Monografie, No. 28, 1988.
• Slatter, P.T. The rheological characterization of sludges. Water Science and Technology, 36(11), pp 9–18, 1997.
• Spinosa, L., Lotito, V. A simple method for evaluating sludge yield stress, Adv. Environ. Res., 7(3), pp. 655–659, 2003.
• Tal-Figiel B., Fryźlewicz-Kozak B. Wpływ stopnia uwodnienia na właściwości reologiczne i strukturą osadów ściekowych, Inż. i Ap. Chem., 3s/2002, 41 (33), 2002.
• Tixier, N., Guibaud, G., Baudu, M. Determination of some rheological parameters for the characterization of activated sludge, Bioresourc. Technol. 90,pp. 215–220, 2003.
• Wolny L., Wolski P., Zawieja I. Rheological parameters of dewatered sewage sludge after conditioning, Desalination, 222(1-3), pp. 382-387, 2008.