Experimental Study on the Solidification/Stabilization of Textile Dyeing Sludge

Abstract:

Sludge from the textile dyeing industries was solidified and stabilized using cement, fly ash（PFA）and cinder as the solidifying agents, and the optimum conditions of sludge solidification/stabilization were analyzed. The mechanical property of solidified sludge block was evaluated by compressive strength test, at the same time， the chemical oxygen demand (COD） and heavy metal concentration of the leaching from the cured block were tested as well. With the dosage of cement, PFA and cinder, 0.15kg/kg, 0.02kg/kg and 0.08kg/kg respectively, and curing time was 6ds, the compressive strength of the solidified sludge block reached 330kPa.Results showed that addition of cement and cinder had good effects on the compressed strength of sludge block, cement, PFA and cinder enhanced the solidification and stabilization of organic and heavy metal in the sludge. Under the above conditions, COD of the leaching from the sludge solidification block was 488mg/L, and the heavy metal concentrations had reached the related national standards. After 6ds of curing time, water ratio of the solidified block was maintained at 40%~45%, which met the prescribed standards of landfill.

• Periodical: Advanced Materials Research (Volumes 197-198)
• Pages: 1010-1015
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.197-198.1010
• Online since: February 2011
• Authors: Xun An Ning, Jian Bo Zhou, Jing Yong Liu, Zuo Yi Yang, Yu Tian, Ning Zhang
• Keywords: Compressive Strength, Heavy Metal, Solidification, Stabilisation, Textile Dyeing Sludge

References

[1] Dos SantoSAB, Cervantes FJ, van Lier JB. Review paper on current technologies for decolourisation of textile wastewater. Bioresearches technology, Vol. 98(2007). pp.2369-2385.

DOI: 10.1016/j.biortech.2006.11.013

[2] X.L. Song Y.X. Li: Research Progresses in Recycling Technonogies for Sewage Sludge. Vol. 26(2006). p.291～294(in chinese).

[3] L.J. Zhao S.G. Dai X.H. Zhang: Application of Sludge Landfill. Vol. 20(2004). p.27～30(in chinese).

[4] Gurjar B R. Sludge Treatment and Disposal(The Netherlands : A A Balkema . 2001).

[5] W. Zhu,L. Li and C. Lin：Rock and soil mechanics，Vol. 27（2006）. p.933(in chinese).

[6] M. Kamon,S. lnazumi and G. Rajasekaran: Soil and Foundations, JGS. Vol. 42(2002). p.13.

[7] S. Valls and E. Vazquez: Cement and Concrete Rwasearch. Vol. 30(2000). p.1671.

[8] C.D. Che N.W. Zhu and Y.L. Li: Transaction of safety and environment. Vol. 8(2008). p.56(in chinese).

[9] J.A. Stegemann and N.R. Buenfeld: Cement and Concrete Research. Vol. 32(2002). p.903.

[10] Ja Hyeung Jeoung. Solidification/stabilization of dredged sludge with low alkalinity additives and geo-environmental assessment. Kyoto( Kyoto University, 2003).

[11] HJ557-2009. Solid waste-Extraction procedure for leaching toxicity-horizontal vibration method(in Chinese).

[12] A. Koening J.N. Kay I.M. Wan: Water Science and Technology. Vol. 34(1996).P. 533.

[13] J. Laugesen, T. Moskeland, A. Kelley, in: Innovative technology for stabilization of contaminated sediments in Trondheim harbor. edtied by Pelei M. Porta A. Proceedings of the Second the International Conference on Remediation of Contaminated Sediments. Columbus: Battelle Press, (2003).

[14] W. Zhu,L. Li and C. Lin：Solidification/Stabilization(S/S) of Sludge Using Calcium-Bentonite as Additive. Vol. 28(2007). p.1020~1025(in chinese).

[15] GB 5085. 3-2007. Identification standards for hazardous wastes-identification for extraction toxicity(in Chinese).