Características físicas, químicas e microbiológicas do lodo das lagoas da ETA Gramame

• Ano de defesa: 2011
• Autor(a) principal: Pereira, Sabrina Lívia de Medeiros
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal da Paraí­ba; BR; Engenharia Cívil e Ambiental; Programa de Pós-Graduação em Engenharia Urbana e Ambiental; UFPB
• Palavras-chave em Português: Lagoa de lodo; ETA e destino final; Pond sludge; ETA and final destination; ENGENHARIAS::ENGENHARIA CIVIL
• Link de acesso: https://repositorio.ufpb.br/jspui/handle/tede/5450

The effect of inadequate disposal, solid waste generated in the process of treating water, the environment has proved to be extremely harmful, since the chemicals used in that process are harmful when released "in natura" in water bodies Because it can cause damage. This work was developed in the ponds of sludge from the clarifiers Station Water Treatment - ETA Gramame located in the municipality of Conde, State of Paraiba and Brazil which supplies the cities of João Pessoa (the capital) and Cabedelo. The objective of this research was to characterize the sludge ponds sludge coming from the decanter Gramame ETA in order to suggest alternative treatment and disposal for these evictions. Analyses were performed between the period October 2009 to April 2010 in two lakes of mud. With results of residue analysis can be seen that the average value of total solids found, 78.28% and 68.12% are fixed solids, pond 1 and 2, respectively. And what of the average total solids found 21.72% (pond 1) and 31.88% (pond 2) are volatile solids. These results indicated the presence of a larger portion of biodegradable material in the pond 2. From the size analysis of the sludge studied, it can be observed with the highest content of coarse sand grain size. But among the heavy metals found in the analysis of sludge were higher rates of Aluminum, Lead and Iron. The latter two above the discharge standards required by the National Environment Council - CONAMA, in its Resolution No. 357/2005. According to our analysis, the sludge can be seen that some of the alternatives of final destination would be the recovery of the coagulant (aluminum sulfate) to use on the ground, whilst highlighting the need for assessment of soil to receive this type of waste once it has considered levels of aluminum and finally a referral to landfills.