Soil washing definition

Soil washing means an ex-situ process to mechanically scrub soil to remove contaminants. Soft particles are separated from soil in an aqueous-based system. The wash water may be augmented with leaching agents, surfactants, pH adjustment or chelating agents.
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Soil washing usually means off-site remediation, and ‘soil flushing’ usually means on-site remediation. We use ‘soil washing’ to cover both in vitro and in situ techniques.
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Soil washing means the comingling of excavated soil with water (whether or not the water has been treated with a surfactant, pH adjuster or other chemical that increases its efficiency as a solvent) for the purposes of separating and removing contaminants from the soil.
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Examples of Soil washing in a sentence

  • Possible remediation technologies for metals, TPH, VOCs (elthylbenzene and xylenes) and SVOC (benzo(a)pyrene) contaminated soil have been proposed: • Metals contaminated soil: Option 1: Soil washing Option 2: Electrokinetic Separation Option 3: Solidification / stabilization Among these remediation technologies, solidification / stabilization is considered as the most practical and cost-effective method to treat the metals contaminated soil on site.

  • Soil washing is discounted because the washing solution will require treatment or offsite disposal.

Related to Soil washing

  • inert waste means waste that—

  • general waste means waste that does not pose an immediate hazard or threat to health or to the environment, and includes-

  • Industrial wastewater means the water or liquid carried waste from an industrial process. These wastes may result from any process or activity of industry, manufacture, trade or business, from the development of any natural resource, or from animal operations such as feedlots, poultry houses, or dairies. The term includes contaminated storm water and leachate from solid waste facilities.

  • washing means a process of separation by water using only size as a criterion.

  • Commercial waste means waste from premises used wholly or mainly for the purposes of a trade or business or for the purposes of sport, recreation, education or entertainment but does not include household, agricultural or industrial waste;