Avaliação da implantação de cobertura vegetal em uma pilha de fosfogesso

• Ano de defesa: 2007
• Autor(a) principal: Marcelo Martins Pinto
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: Fosfogesso; Cobertura Vegeral; Meio Ambiente; Fosfogesso Uberaba (MG); Controle de poluição Indústria; Meio ambiente; Recursos hídricos Desenvolvimento; Engenharia sanitária; Saneamento
• Link de acesso: http://hdl.handle.net/1843/FRPC-78HHER

The present work aims to show to the methodology used for attainment of a vegetal covering on the of Phosphogypsum stack located at the Industrial Complex of Uberaba of property of the company FOSFERTIL Fertilizantes Fosfatados S.A, aiming at the reduction of the visualimpact proportionated, as well as the prevention of erosive processes and the dispersion of particles. It also aims at evaluating this methodology through the statistics analysis of the experiment, evaluation of the vegetation and the substratum throughout 4 years of plantation.To accomplish that an ample diagnosis was made that involved the stacks of Phosphogypsum in Uberaba MG and Cubatão SP, being that this second had a espontanneausly formed vegetal covering, wich allowed to evaluate the diverse impediments to the growth ofvegetation in the stack of Uberaba. The main limiting factors to the growth of vegetation in the stack of Uberaba had consisted of very low pH, the superficial crust caused by the Phosphogypsum crystallization, theabsence of structures and porosity and the nutricional disequilibrium of the material, that demanded several tests to correct of these factors.Many tests for the correction of these impediments had been carried out, where it concludes that if a correction of the Phosphogypsum using soil, organic matter, dolomitic limestone and the sludge residues from a treatment lagoon existing at the company. After these measures the vegetal covering with good vegetative vigor that it occupied more than 95% of the planted surface would be obtained. Based on these tests definitive planting were carried through in the stack from the years of2002 to 2005, wich allowed to evaluate the behavior of the vegetation and the substratum formed as time passed, as well to investigate the main causes of imperfections verified in these plantings. It was concluded in this work that the employed methodology was a successful, not only forthe result of the vegetal covering in the plantings that were done, wich had always been superior to 95% of the experimental process, but also because it indicates that it can be reapplied in other existing stacks in the country and the world, as well as other industrial stacks of similar characteristics.