Resíduos sólidos de bovinos proveniente da estação de tratamento de efluentes de frigorífico pelo processo de compostagem e vermicmpostagem na produção de mudas de alface

Abstract

The agribusiness sector has been growing and these was the generation of solid waste and liquids increasing, constituing an environmental problem. The objectives of this work were: 1) to produce organic compound from solid wastes from generate cold; 2) to reuse the generated composting organic compound on proliferation of worms and in the production of humus and 3) to evaluate the use of vermicomposting in the production of seedlings of lettuce (Lactuca sativa L.). In the first, study was evaluated the behavior of waste generated, green and red in the ETP (Effluent Treatment Station) by the composting process. The second, study was tested at home of vegetation greenhouse green and red residue in rice husk blend "in natura" and carbonized rice husk to multiplication of Eisenia andrei (BOUCHÉ, 1972) and production vermicomposting. In the third, study was evaluated at home of vegetation using vermicomposting for production of seedlings of lettuce. In 90 days composting noted the maturation of the residue. The use of residue in rice husk blend "in natura" and carbonized rice husk, proved efficient for reproduction and multiplication of E. andrei worms. The amount of heavy metals present in the waste reduces earthworms during vermicomposting process. The use of substrate produced demonstrated good conditions for the production of lettuce. The study suggests that the green and red residual from generate cold after the composting and vermicomposting process can be reused as biofertilizers for the production of lettuce.