Uso de processos físico e físico-químico na separação de lodo de lagoas de estabilização da ETE de Ilha Solteira-SP e diferentes processos de secagem

• Ano de defesa: 2015
• Autor(a) principal: Costa, Danielle Bolandim [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Sludge stabilization pond; Column settler; Sludge blanket settler flocculator; Thickening; Drying; Lodo de esgoto; Lagoas de estabilização; Secagem
• Link de acesso: http://hdl.handle.net/11449/190899; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/12-07-2019/000917999.pdf

This research aimed to evaluate the use of Column Settler (CS) followed by Sludge Blanket Settler Flocculator (SBSF) with application of Poly Aluminum Chloride as coagulant, in the phase separation (solid and liquid) of stabilization pond sludge and drying the dense sludge, naturally and artificially, in agricultural greenhouse and with infrared lamps radiation, aiming to ease of handling. The challenge was the search for alternative technique, economically and environmentally advantageous treatment and disposal Wastewater Treatment Plants Sludge (WWTP). In conjunction with the proposed system were analyzed parameters such as turbidity, Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Solids (TS), Total Phosphorus and Total Nitrogen, raw sludge samples tributary of the CS and effluent the SBSF. Statistical differences were observed in the turbidity values, BOD, COD, TS and also to nitrogen and phosphorus, with average removal of 85.79% and 98.65%, respectively. Drying in a greenhouse on the tenth day of drying the sludge compacted in CS were on average 35.25% of moisture and the dense mud from SBSF 14.53% humidity. The highest levels of nitrogen and phosphorus were found in the dried sludge SBSF on average 37.35 g/kg and 2937.50 mg/L, respectively. On drying without drainage sludge by infrared radiation has reached the stabilization of the mass of samples in 3.5; 4 and 5.5 hours respectively with four, three and two lighted lamps. With drainage to reduce the moisture was accelerated. The positioning of the lamps, for the samples, influence on the result of the drying mode