Fechamento de circuito de águas no setor sucroenergético estudo de caso

Abstract

The culture of sugarcane has a great importance for the economic sector of many countries. By contrast, the environmental impacts are evident in the sugarcane industry. But the dimensions of these impacts vary depending on the level of management in the stages of the production chain. Those impacts may influence the soil, water and atmosphere. This requires a concern with respect to the management, conservation and rational use of water, facing the installation of environmental programs that include from the production of sugarcane to the storage of their final products, hydrated ethanol, anhydrous ethanol and VHP sugar. Thus, the main objective of this study was to verify the opportunity to reduce the consumption of raw water through circuit closing, verifying points reusable and reuse of water. In this work we were determined four points subject to project implementation for water reuse, the following: water seal pumps, filter press screen wash water, condensed water from the dehydration of hydrated alcohol and laboratory water. This study evaluated the 2015/2016 harvest data for a plant that produces raw sugar VHP, hydrated alcohol, anhydrous ethanol and bioenergy, located in the region of Grande Dourados - MS. It concluded that there is viability for the implementation of technical proposals and that these proposals once implemented greatly reduce the uptake of raw water, generation and disposal of wastewater. This study verified that the four generating areas of waste subject to implementation of water recovery projects no appears in the volumes of quantitative used in each process, not being counted as an input at the end in each crop season. The implementation of the proposed actions will certainly ensure financial returns, environmental and improving the company's image. Achieving a desired sustainability is possible through the continuous improvement of inputs reduction in the industrial process, especially water consumption.