Abstract
Water resources utilization in large hydropower projects is primarily allocated to aggregate washing. Current washing devices are inefficient and lead to serious waste of water. Thus, a novel washing device is designed by optimizing outlet point layout and hydraulic form. The device's various nozzles, particularly the spiral ones, offer greater rinsing coverage and improved washing efficiency with multiple interfacial sprays. Compared to conventional methods, the new washing process has reduced water usage by half, and its effectiveness has been verified in Yebatan hydropower station's aggregate processing system. Subsequently, the feasibility of using recycled water for concrete mixing is verified. Recycled water may impair concrete performance due to Cl− accumulation after flocculation and high suspended solids concentration. Experiments confirm that Cl− and under 1800 mg L−1 suspended solids concentration do not significantly impair concrete performance. This work optimizes the utilization of water resources in aggregate processing from source and terminal.
Published Version
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