Avaliação do uso de resíduo de estação de tratamento de água na produção de espécies vegetais com ocorrência no cerrado

• Ano de defesa: 2015
• Autor(a) principal: Ramalho, Raquel Pinheiro Reis Souza
• Orientador(a): Scalize, Paulo sérgio
• Banca de defesa: Scalize, Paulo Sergio, Almeida, Rogério de Araújo, Ruggeri Júnior, Humberto Carlos
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Goiás
• Programa de Pós-Graduação: Programa de Pós-graduação em Engenharia do Meio Ambiente (EEC)
• Departamento: Escola de Engenharia Civil - EEC (RG)
• País: Brasil
• Palavras-chave em Português: Solo; Disposição final; Mudas e iodo
• Palavras-chave em Inglês: Soil; Final disposal; Seedlings and sludge
• Área do conhecimento CNPq: ENGENHARIA SANITARIA::RECURSOS HIDRICOS
• Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tede/5419

One of the major environmental challenges in Brazil is the proper disposal of Drinking Water Treatment Plant Residue (RETA). In view of logistical and financial difficulties, only about 1% of the country's municipalities perform some kind of reuse of this waste. Faced with this obstacle, the present study aimed to reuse the RETA to vegetal species occurring in the Cerrado. This waste was collected in the Water Treatment Plant Eng. Rodolfo José da Costa, located in Goiania. One soil type from the Cerrado was used to plant four species occurring in the Cerrado: Hymenaea courbaril, Jacaranda cuspidifolia, Copaifera langsdorfii and Peltophorum dubiu. The soil and the RETA were characterized according to their chemical and physical compositions. Different strengths (0,4,8,16 and 32 t ha-1) of RETA for planting in pots of seedlings were used. During the experiment were conducted biometric analyses (shoot height and stem diameter) every 15 days. After 210 days, the specimens were collected, divided into aerial and root parts and dried in an oven at 65 ° C. Fresh and dry weight, root length, height and final diameter were checked, and analyzes of chlorophyll and chemical constitution of the leaves of the species were performed. The RETA applied in this study has physical and chemical properties very similar to the soil of the Cerrado. Because of this, the dosages used in the treatments did not significantly affect plant growth. In any case, the RETA Water Treatment Plant Eng. Rodolfo José da Costa, used in dosages considered here, can be applied to the soil as an environmentally correct alternative of disposal. It is of low risk of environmental contamination to the soil, and the specimens showed no morphological or nutritional deficit.