Reuse of waste cutting sand at Lawrence Livermore National Laboratory

作者: Mathews, S., Llnl

DOI:

关键词: TrenchGround water qualityReuseLeaching (agriculture)National laboratoryEngineeringWater jet cuttingWaste managementWater qualityGroundwater

摘要: Lawrence Livermore National Laboratory (LLNL) examined the waste stream from a water jet cutting operation, to evaluate possible reuse of garnet sand. The sand is agent used shape variety materials, including metals. Nearly 70,000 pounds generated annually by operation. Environmental Protection Department evaluated two potential reuses for spent sand: backfill in utility trenches; and as concrete constituent. In both applications, would replace formerly purchases LLNL these purposes. Findings supported concrete, but disqualified its proposed application trench backfill. Waste stabilized ac matrix appeared present no metals-leaching hazard; however, unconsolidated trenches could potentially leach metals concentrations high enough threaten ground quality. A technical report submitted San Francisco Bay Regional Water Quality Control Board was reviewed accepted that body. Reuse constituent poured form walkways patios at approved.

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