liner system Articles
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Landfill Liners Vary by Application
It was in 1991 that the Environmental Protection Agency promulgated its Criteria for Municipal Waste Landfills that set location restrictions, design and operating standards, groundwater monitoring requirements, corrective actions, closure requirements, and more for landfills. It was these rules that mandated that landfills be lined on the sides and bottom before waste is deposited and capped on ...
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Unique geosynthetic clay liner system for uranium mill tailings disposal - Case Study
A uranium mill in the western United States uses sulfuric acid in the extraction process. The remaining byproduct is then stored in a tailings disposal cell. The liquids are acidic with a pH between 1 and 2. Project Details Uranium Mill Tailings Disposal Location Ores Processed in Utah, Colorado & Arizona Products Used Bentomat ST Challenge: The liner system for the project ...
By CETCO
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Interest Growing in Mining Applications for Geosynthetics
Some 40 percent of the geosynthetics manufactured today are used by the mining industry, according to one estimate, and there are predictions that figure will increase as the industry continues to adopt mining technologies that help improve efficiency and protect the environment. Jack Caldwell, an engineer at Robertson GeoConsultants, has gone as far as to say, “We believe that the ...
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Enhanced Geomembrane CQA through proper application of geomembrane leak location surveys
Abstract Historically, geomembrane construction quality assurance (CQA) has focused on destructive testing of welded seams to verify seam strength and integrity. Paradoxically, seams are not subject to significant stress and practically never fail in service, while holes and construction damage in the geomembrane are a much more widespread problem. The historical approach fails to evaluate how ...
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Experience with GCLs used as a conductive layer in geomembrane leak-location surveys
Engineers, installers, regulators, and owners are starting to rely on geomembrane leak-location surveys as part of the construction quality assurance for landfills. The various methods are described in ASTM Standard D 6747.' Standard procedures for conducting leak-location surveys of geomembranes covered with earth materials are described in ASTM Standard D 7007.2 Figure 1 shows the principle of ...
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Comparison of dye testing and electrical leak location testing of a solid waste liner system
Abstract: Dye tracing and electrical leak location testing were independently conducted to detect and locate leaks in the primary geomembrane liner of two cells in a municipal landfill. Despite extensive quality control and quality assurance programs, water in the leak detection zone after construction indicated that the primary liner had a leak. Fluorescein dye tests were conducted by placing a ...
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Locating Leaks in Geomembrane Liners of Landfills Covered With a Protective Soil
ABSTRACT The electrical leak location method was used to locate leaks in the geomembrane liners of single-lined and double-lined landfills covered with a protective soil cover. The landfills ranged in size from 0.40 hectare (one-acre) to 3.2 hectares (eight-acre). Water in the leak detection system under the primary liner indicated the primary liners were leaking. The principal of the electrical ...
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Converting your GC carrier gas from helium to hydrogen : A step by step guide
Learn how to convert your GC carrier gas from helium to hydrogen with this step by step guide. With recent increases in helium pricing and an increasing number of regulated methods allowing the use of hydrogen as a carrier gas for GC, more labs are looking to switch to alternative carrier gases. This step by step guide will provide you with the necessary information to convert your GC’s ...
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