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11 Cards in this Set
- Front
- Back
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Adsorption Field
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A network of porous pipes and surrounding soil from which septic-tank effluent is slowly released (same as Leaching Field).
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Half-Life
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The length of time required for half of an initial quantity of a radioactive isotope to decay.
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High-Level Waste
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Waste sufficiently radioactive to require special handling in disposal.
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Leachate
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Water containing dissolved chemicals; applied particularly to fluids escaping from waste disposal sites.
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Leaching Field
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A network of porous pipes and surrounding soil from which septic-tank effluent is slowly released (same as Absorption Field).
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Low-Level Waste
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Wastes that are sufficiently low in radioactivity that they can be released safely into the environment or disposed of with minimal precautions.
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Multiple Barrier Concept
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Waste-disposal approach that involves several mechanisms or materials for isolating the waste from the environment; often used in the context of high-level radioactive wastes.
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Sanitary Landfill
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A disposal site for solid or contained liquid waste; in simple form, a dump site at which wastes are covered with layers of earth daily or more often.
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Secure Landfill
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A sanitary landfill designed to contain toxic chemical wastes; typically includes one or more impermeable liners and often is monitored by nearby wells.
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Source Separation
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The sorting of waste material by type prior to collection, usually to facilitate the recycling of individual materials or to ready material for a particular disposal strategy, such as incineration.
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Transuranic Wastes
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Describes elements with atomic numbers higher than that of uranium, none of which occur naturally on earth, and all of which are radioactive.
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