Characterization of Ash Sludge from Wastewater Treatment Plants: Assessment for Construction Purposes

Abstract:

Considering that the human being is in a universe where the population demand for consumer goods is rapidly growing, the United Nations (UN) concluded that the effective implementation of the use of renewable resources has a nearing deadline. As a result of population growth, a massive waste is generated, especially sewage, requiring adjustments in its disposal, treatment and final disposal. Based on this information, it must be highlighted that the generation of municipal waste due to the sewer, with a significant production of biogas and of sludge, presents major environmental problem due to their volume, size and features. This work points out that the ash of the wastewater sludge can have a more productive destination if used as an alternative material of construction. The research was divided into three stages. In the first stage, it was sample preparation sludge performed; in the second one, burning procedures were designed, and, in the third one, physical-chemical and mineralogical tests for the sewage sludge ash were made, seeking to assess the feasibility of using this residue in mortar and in concrete. According to the conducted studies, it was observed that there is a potential pozzolanic reactivity when using this material as a mineral admixture for Portland cement replacement.

• Periodical: Key Engineering Materials (Volume 600)
• Pages: 628-637
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.600.628
• Online since: March 2014
• Authors: Cristiane Maria da Silveira Thiago Rosa*, José Luiz Pinheiro Melges, Jordi Payá, Jorge L. Akasaki, Jean Richard Dasnoy Marinho, Douglas Santos Oliveira
• Keywords: Alternative Material, Ash, Chemical Property, Construction, Sewage Sludge

References

[1] J. Monzó, J. Payá, M. V. Borrachero, A. Córcoles, Use of sewage sludge ash (SSA)-cement admixtures in mortars, Cement and Concrete Research. Volume 26, Issue 9 (1996) 1389-1398.

DOI: 10.1016/0008-8846(96)00119-6

[2] A. L. Geyer, Contribuição ao estudo da disposição final e aproveitamento da cinza de lodo de estações de tratamento de esgotos sanitários como adição ao concreto, PhD Thesis, UFRS (2001) 238p.

DOI: 10.47749/t/unicamp.2005.397076

[3] S. C. Pana, D. H. Tsenga, C. C. Leea, C. Leeb, Influence of the fineness of sewage sludge ash on the mortar, Cement and Concrete Research. Volume 33 (2003) 1749-1754.

DOI: 10.1016/s0008-8846(03)00165-0

[4] E. G. Alcocel, P. Garcés, J. J. Martínez, J. Payá, L. G. Andión, Efecto de la adición de ceniza de lodo de depuradora (CLD) en las propiedades mecánicas y niveles de corrosión de las armaduras embebidas en morteros de cemento Portland, Materiales de Construcción, Vol 56, No 282 (2006).

DOI: 10.3989/mc.2006.v56.i282.25

[5] C. M. A. Fontes, Utilização das cinzas de lodo de esgoto e de resíduo sólido, PhD Thesis, UFRJ (2008) 294p.

[6] J. Payá, P. Garcés, J. Monzó, M. V. Borrachero, L. Soriano, M. Bonilla, A. Mellado, J. M. Saval, L. Reig, New contributions to the Portland cement-sewage sludge ash system, 13th International Conference on the Chemistry of Cement (ICCC), Espanha (2011).

DOI: 10.1016/0008-8846(96)00119-6

[7] Associação Brasileira de Normas Técnicas - ABNT. NBR 12653: Materiais pozolânicos (1992) 3. p.

[8] J. Monzó, J. Payá, M. V. Borrachero, E. Peris-Mora, Mechanical behavior of mortars containing sewage sludge ash (SSA) and Portland cements with different tricalcium aluminate content, Cement and Concrete Research. Volume 29 (1999) 87–94.

DOI: 10.1016/s0008-8846(98)00177-x