Re-use of drinking water treatment plant (DWTP) sludge: Characterization and technological behaviour of cement mortars with atomized sludge additions

Rodríguez, N.; Martínez-Ramírez, S.; Blanco-Varela, María Teresa; Guillem, Manel; Puig, J; Larrotcha, E.; Flores, J.

doi:10.1016/j.cemconres.2009.11.012

Cited by 138 publications

(69 citation statements)

References 35 publications

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“…It was found that the partial replacement of cement by sludge led to a substantial retardation of the hydration rate [6]. ElDidamony et al [7] studied the hydration and the mechanical properties of blends of OPC, FDWS and calcined anhydrite gypsum.…”

Section: Introductionmentioning

confidence: 98%

Effect of substitution of blast-furnace slag by fired drinking water sludge on the properties of pozzolanic cement pastes

El-Didamony

Mohammed

Osman

2015

J Therm Anal Calorim

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The effect of fired drinking water sludge (FDWS) as a mineral admixture on the physico-mechanical properties and the fire resistance of pozzolanic cement pastes has been investigated. Five blends of ordinary Portland cement, blastfurnace slag (GBFS) and FDWS were prepared. The Portland cement was fixed to 70 mass%, while granulated slag was replaced by 0, 3, 6, 9 and 12 mass% of fired sludge. The phase composition was identified using X-ray diffraction, thermal gravimetric analysis and differential scanning calorimetry. The results have shown an increase in the required water of standard consistency and elongation of setting times with increasing the fired sludge content. The bulk density has decreased with increasing the sludge content, while the compressive strength was enhanced at later ages for 3 and 6 mass% FDWS substitution. In addition, the specimen that contains 9 mass% FDWS gave the best firing resistance at high temperature, whereas Portland cement paste has been completely deteriorated at 800°C.

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Section: Introductionmentioning

confidence: 98%

Effect of substitution of blast-furnace slag by fired drinking water sludge on the properties of pozzolanic cement pastes

El-Didamony

Mohammed

Osman

2015

J Therm Anal Calorim

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“…WTS is a problem of big city around the world [7]. Environmentalist proposes the effective way to solve the problem of WTS is reused or processed it to be the usable products [8].…”

Section: Introductionmentioning

confidence: 99%

Development of Room Temperature Curing Geopolymer from Calcined Water-Treatment-Sludge and Rice Husk Ash

2015

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Geopolymer is an environmental friendly material, and is expected to use as the cement replacement materials. Because, the geopolymer production does not emit carbon dioxide gas, and is a low energy consuming process. Moreover, geopolymer can be synthesized from variety kinds of waste materials. The present work, the room temperature curing geopolymer has been developed by using the calcined water-treatment-sludge (WTS) and the rice husk ash (RHA) as the precursors. Mixture of sodium hydroxide solution and sodium silicate solution was used as an alkali activator solution. The results show that the RHA promotes strength of the WTS-geopolymer. By adding RHA 30 wt%, strength of geopolymer is close to the minimum required strength of the ordinary Portland cement (OPC). In addition, density of WTS-RHA geopolymer is 3 times lower than that of the OPC. Knowledge in the present work opens an opportunity to apply geopolymer for using in variety kinds of engineering applications, especially the lightweight construction materials.

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“…Averiguaram a durabilidade do concreto com adição de resíduo e notaram que seu desempenho com 5% de resíduo foi similar às amostras sem o resíduo [8]. Observaram o comportamento do resíduo incorporando-o como matéria-prima para produção de cimento Portland em percentuais que variaram de 10% a 30% e perceberam que o resíduo diminuiu a resistência mecânica das argamassas produzidas com esse cimento em comparação com as amostras de controle, produzidas com o cimento Portland tradicional [9].…”

Section: Introductionunclassified

Caracterização física do resíduo de uma estação de tratamento de água para sua utilização em materiais de construção

et al. 2015

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ResumoA produção de água tratada, nas Estações de Tratamento de Água (ETAs) gera lodo, também chamado de resíduo de ETA (RETA). A maior parte das ETAs descarrega estes resíduos em meios hídricos, apesar da política nacional de resíduos sólidos salientar que é de responsabilidade da fonte geradora adotar destinação sustentável aos resíduos, visto que o seu lançamento in natura nos corpos hídricos é prejudicial, tornando esse meio de disposição um sério passivo ambiental das companhias de saneamento. O objetivo do presente trabalho foi realizar a caracterização física do resíduo gerado em uma ETA buscando obter parâmetros com bases normativas e considerar alternativas sustentáveis de reincorporação do lodo na cadeia produtiva para confecção de materiais de construção, de maneira a reduzir o impacto causado com o lançamento do RETA nos cursos de água. Para isso, foram realizados ensaios de índices de consistência do resíduo, granulometria, microscopia de varredura eletrônica e espectroscopia por dispersão de energia. Os resultados encontrados nas análises do resíduo demonstram a potencialidade de sua aplicação em substituição parcial do solo e/ou da areia, sendo suas propriedades similares a matéria-prima, na fabricação de materiais de construção. Palavras-chave: estação de tratamento de água, resíduo de ETA, lodo de ETA, materiais de construção. Abstract In the Water Treatment Plants (WTPs), the production of treated water generates residues, which are usually called water treatment residues (WTR). Most of these WTPs discharge waste into watercourses, despite the national solid waste policy assigning responsibility for adopting sustainable ways to disposal the wastes to the generating source, because its launch "in natura" in water bodies is harmful. The aim of this work was to determine the physical characteristics of the waste generated in a Water

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Re-use of drinking water treatment plant (DWTP) sludge: Characterization and technological behaviour of cement mortars with atomized sludge additions

Cited by 138 publications

References 35 publications

Effect of substitution of blast-furnace slag by fired drinking water sludge on the properties of pozzolanic cement pastes

Effect of substitution of blast-furnace slag by fired drinking water sludge on the properties of pozzolanic cement pastes

Development of Room Temperature Curing Geopolymer from Calcined Water-Treatment-Sludge and Rice Husk Ash

Caracterização física do resíduo de uma estação de tratamento de água para sua utilização em materiais de construção

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