Copyright (c) 2014 AJC
This work is licensed under a Creative Commons Attribution 4.0 International License.
Advances on Sludge Properties and Dewaterability with Chemical Conditioning: A Review
Corresponding Author(s) : Huaili Zheng
Asian Journal of Chemistry,
Vol. 26 No. 8 (2014): Vol 26 Issue 8
Abstract
Chemical conditioning of sludge dewatering has the advantages of simple operation, low investment cost and stable conditioning effect. It is the most commonly used pretreatment method. The components of sludge play an important role on sludge dewaterability and the choice of appropriate coagulants. The adoption of the coagulants contributes to the alteration of sludge characteristics and sludge dewaterability. The relationship between sludge components and chemical conditioning effects should be understood better to give lights to more appropriate selection of coagulants and the research of new coagulants. In this paper sludge properties including water distribution, sludge particle size distribution, the types and contents of metal ions and the fractions and structures of extracellular polymeric substances which would mostly affect sludge dewatering were reviewed as well as the chemical conditioning technologies and the methods' conditioning effects. Finally, the perspective of sludge properties research and chemical conditioning methods were discussed.
Keywords
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J.I. Houghton, J. Quarmby and T. Stephenson, Water Sci. Technol., 44, 373 (2001).
Y.L. Wang and S.K. Dentel, Chem. Eng. J., 166, 850 (2011); doi:10.1016/j.cej.2010.11.055.
L. Kuutti, S. Haavisto, S. Hyvärinen, H. Mikkonen, R. Koski, S. Peltonen, T. Suortti and H. Kyllönen, BioResources, 6, 2836 (2011).
J. Boráň, L. Houdková and T. Elsäßer, Resour. Conserv. Recycling, 54, 278 (2010); doi:10.1016/j.resconrec.2009.08.010.
H. Saveyn, S. Meersseman, O. Thas and P. Van der Meeren, Colloids Surf. A, 262, 40 (2005); doi:10.1016/j.colsurfa.2005.04.006.
T. Li, Z. Zhu, D. Wang, C. Yao and H. Tang, Powder Technol., 168, 104 (2006); doi:10.1016/j.powtec.2006.07.003.
M.A. Yukselen and J. Gregory, Int. J. Miner. Process., 73, 251 (2004); doi:10.1016/S0301-7516(03)00077-2.
C. Turchiuli and C. Fargues, Chem. Eng. J., 103, 123 (2004); doi:10.1016/j.cej.2004.05.013.
T.J. Hwa and S. Jeyaseelan, Water Sci. Technol., 36, 117 (1997); doi:10.1016/S0273-1223(97)00711-7.
X. Zhang, H. Lei, K. Chen, Z. Liu, H. Wu and H. Liang, Chem. Eng. J., 210, 467 (2012); doi:10.1016/j.cej.2012.09.013.
N. Johnson Patrick and A. Amirtharajah, Am. Water Works Assoc. J., 75, 232 (1983).
Y. Wu, H. Zheng, P. Zhang, S. Jiao and Y. Yang, Res. Environ. Sci., 22, 535 (2009).
F. Renault, B. Sancey, P.M. Badot and G. Crini, Eur. Polym. J., 45, 1337 (2009); doi:10.1016/j.eurpolymj.2008.12.027.
S. Pal, S. Ghorai, M.K. Dash, S. Ghosh and G. Udayabhanu, J. Hazard. Mater., 192, 1580 (2011); doi:10.1016/j.jhazmat.2011.06.083.
J. Fu and W. Cai, J. Chem. Eng. Jpn, 40, 1113 (2007); doi:10.1252/jcej.07WE063.
Q. Yang, K. Luo, D. Liao, X. Li, D. Wang, X. Liu, G.-M. Zeng and X. Li, Water and Environ. J., 26, 560 (2012); doi:10.1111/j.1747-6593.2012.00319.x.
Z. Zhang, S. Xia and J. Zhang, Water Res., 44, 3087 (2010); doi:10.1016/j.watres.2010.02.033.
H. Salehizadeh and S.A. Shojaosadati, Biotechnol. Adv., 19, 371 (2001); doi:10.1016/S0734-9750(01)00071-4.
C.H. Lee and J.C. Liu, Adv. Environ. Res., 5, 129 (2001); doi:10.1016/S1093-0191(00)00049-6.
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