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Implementation of a Closed-Cycle System for Use in the Extraction of Water from Wet Ash at Jorge Lacerda Coal-fired Power Plant

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The interconnection project of the ash extraction system in the Jorge Lacerda Coal-Fired Power Plant resulted in a 95% reduction in water consumption at the three Plant Units. Through an innovative system, Tractebel Energia has drastically reduced the volume of water collected from the Tubarão River for the extraction of wet ash.

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Use of Percolation Water from Hydopower Plants Dams

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Tractebel Energia S.A. has implemented in three of its hydropower plants an innovative solution developed by technicians of the company, which replaces Water Treatment Stations. The use of percolation water – which spills from the rocky massifs of the water intake of plants – for human consumption in the project has proved to be a simple, efficient alternative whose cost is lower than the traditional system and with little environmental impact..

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Use of Hydraulic Dragging to Remove Sediments in Madeira River in Jirau Hydropower Project

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To build a dam with large dimension is a challenge , in special in a river with higher amount of sediments, like the Jirau Hydropower Project in Rondonia, north of Brazil, where additional efforts and innovative solutions are certainly constantly required. It’s because Madeira river shows high capacity to transport debris, silt and clay, increasing the costs to excavate canals, using conventional equipments. To mitigate the cost issue and emissions, the solution took into account the low cohesion of the silt laid up at the river bed and the high capacity of this material to be carried by hydraulic dragging. The comparative costs between the standard excavation against hydraulic dragging means a reduction of USD 12 million, effective compliance with Brazilian Federal Environment Agency , in addition to being a low carbon emission, due to the use of only 3 electric pumps to start-up the natural erosion  process.

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