Waste not in Wisconsin

Article Abstract:

The use of geosynthetic liners to cover an old landfill in Milwaukee, WI, made the space usable for construction and removed the problem of methane moving from landfills into the buildings. The technique reduced costs by $300,000 million. The liner system consists of a 40 million high-density polyethylene sheet, sandwiched between 12 oz. geo-textile fabrics. A 12 inch uncompacted granular bedding fill between the liner system and the waste allows circulation of methane into and out of the fill. The liner system is covered by a ballast fill and then capped by clay borrow.

Methods, Environmental aspects, Land reclamation, Reclamation of land, Geotextiles, Milwaukee County, Wisconsin

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Putting on your safety cap

Article Abstract:

The landfill closure caps are made up of soil, clay and a geomembrane liner. High interface shear strength is used to provide a high overall factor of safety against slope failure. The system is such that the shear strength of each interface is stronger than the one above it. A flexible geomembrane liner is also provided. High-density polyethylene, very flexible polyethylene and polyvinyl chloride are the geomembranes used for the landfill caps. The interface shear strength and the axisymmetric strain are the main characteristics of the landfill caps.

Design and construction, Geomembranes

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All fired up: Plasma arc technology, which generates intense heat to vitrify waste material, can provide a viable waste reduction alternative to standard incineration or landfilling

Article Abstract:

Plasma heating technology was used over 30 years ago by NASA, and today the technology powers furnaces and is used in arc welding units. The technology is also being developed as a feasible hazardous waste treatment method. Transportable or mobile plasma units could be developed. Plasma arc technology requires gas to produce heat and vitrification occurs in a sealed processing chamber where a molten bath detoxifies the feed material.

Innovations, Vitrification of pollutants, wastes, etc., Plasma arc melting

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