Porosity and interior structure of flocculated activated sludge floc.
作者： HY Chung , DJ Lee , None
DOI: 10.1016/S0021-9797(03)00682-9
关键词: Polyelectrolyte 、 Buoyancy 、 Porosity 、 Activated sludge flocs 、 Mineralogy 、 Activated sludge 、 Bound water 、 Flocculation 、 Void (astronomy) 、 Chemistry
摘要: This work estimated the porosities of activated sludge flocs, cationic polyelectrolyte flocculated, based on free-settling tests, buoyant weight measurements, and confocal laser scanning microscope (CLSM) tests. The extent advective flow was bubble-tracking test. former two measurements suggested a close-to-unity porosity, that is, an extremely void floc interior. Meanwhile, latter tests recommended dense interior with porosity less than 64%. A discrepancy exists between by various model proposed understanding vast amount bound water in regarded as measurement, but impermeable for flow. distribution rather mean value controls There existed no simple correlation measured different
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DN Thomas, SJ Judd, N Fawcett, None, Flocculation modelling: a review Water Research. ,vol. 33, pp. 1579- 1592 ,(1999) , 10.1016/S0043-1354(98)00392-3
Chih Chao Wu, Chihpin Huang, D.J. Lee, Bound water content and water binding strength on sludge flocs Water Research. ,vol. 32, pp. 900- 904 ,(1998) , 10.1016/S0043-1354(97)00234-0
G.C. Bushell, Y.D. Yan, D. Woodfield, J. Raper, R. Amal, On techniques for the measurement of the mass fractal dimension of aggregates Advances in Colloid and Interface Science. ,vol. 95, pp. 1- 50 ,(2002) , 10.1016/S0001-8686(00)00078-6
Da Hong Li, Jerzy Ganczarczyk, Fractal geometry of particle aggregates generated in water and wastewater treatment processes Environmental Science & Technology. ,vol. 23, pp. 1385- 1389 ,(1989) , 10.1021/ES00069A009
Xiaoyan Li, Bruce E. Logan, Collision Frequencies between Fractal Aggregates and Small Particles in a Turbulently Sheared Fluid Environmental Science & Technology. ,vol. 31, pp. 1237- 1242 ,(1997) , 10.1021/ES960772O
R Witzig, W Manz, S Rosenberger, U Krüger, M Kraume, U Szewzyk, Microbiological aspects of a bioreactor with submerged membranes for aerobic treatment of municipal wastewater Water Research. ,vol. 36, pp. 394- 402 ,(2002) , 10.1016/S0043-1354(01)00221-4
Srinivas Veerapaneni, Mark R. Wiesner, Hydrodynamics of Fractal Aggregates with Radially Varying Permeability Journal of Colloid and Interface Science. ,vol. 177, pp. 45- 57 ,(1996) , 10.1006/JCIS.1996.0005
Shankararaman Chellam, Mark R. Wiesner, Fluid mechanics and fractal aggregates Water Research. ,vol. 27, pp. 1493- 1496 ,(1993) , 10.1016/0043-1354(93)90030-L
R.M Wu, G.W Tsou, D.J Lee, Estimation of the interior permeability of polymer-flocculated sludge flocs Advances in Environmental Research. ,vol. 4, pp. 163- 167 ,(2000) , 10.1016/S1093-0191(00)00019-8
R.M. Wu, D.J. Lee, Hydrodynamic drag force exerted on a highly porous sphere moving towards an impermeable plate Chemical Engineering Science. ,vol. 53, pp. 3571- 3578 ,(1998) , 10.1016/S0009-2509(98)00172-9