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 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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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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Examples of Soil washing in a sentence

  • Soil washing, therefore, attempts to generate a clean sand and gravel fraction by removing any fines adhering to the larger soil particles and, if necessary, to transfer contaminants bound to the surface of the larger particles to the smaller soil particles.

  • Soil washing is the separation of soils into its constituent particles of gravel, sand, silt and clay.

  • Soil Washing (Physical and Gravity Separation) Soil washing is a proven technology and another lead reclamation method used by some reclaimers to separate the lead particles from Chapter III - Page III-14the soils.

  • Soil washing and separation system must include mixing, washing, [solids and liquid separation] [particle size separation] [ ], dewatering, stockpiling of treated materials, and measurement of process parameters and treated materials.

  • Soil washing is effective for the remediation of soils with a high content of material withEM 1110-35-11 July 2005 large particle sizes (more than 90% sand and gravel).

  • Soil washing can also be used for mixed wastes contaminated with organics or heavy metals.

  • Soil washing has been successfully demonstrated (pilot scale) on soils contaminated with strontium, cesium, technetium, radium, uranium, thorium, barium, and lead.

  • Soil washing has the potential to remove As from contaminated soils by using inorganic salts (potassium phosphate, potassium chloride, potassium nitrate, potassium sulphate or sodium perchlorate), inorganic acids (sulphuric acid, nitric acid, phosphoric acid, hydrochloric acid or mixed acid), organic acids (citric or acetic acids) or alkaline agent (e.g., sodium hydroxide) (Alam et al., 2001; Jackson and Miller, 2000; Tokunaga and Hakuta, 2002; Jang et al., 2005).

  • Soil washing refers to removal of heavy metal(loid)s from soil using various reagents and extractants (Guo et al., 2016; Park and Son, 2016) that can leach the heavy metal(loid)s from the soil.

  • Soil washing may be effective when there is an inverse relationship between particle size and contaminant concentration.

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;

  • Sewage sludge means a solid, semi-solid, or liquid residue generated during the treatment of domestic sewage in a treatment works as defined in section 6111.01 of the Revised Code. "Sewage sludge" includes, but is not limited to, scum or solids removed in primary, secondary, or advanced wastewater treatment processes. "Sewage sludge" does not include ash generated during the firing of sewage sludge in a sewage sludge incinerator, grit and screenings generated during preliminary treatment of domestic sewage in a treatment works, animal manure, residue generated during treatment of animal manure, or domestic septage.

  • Potable means water suitable for drinking by the public.

  • Industrial waste means any liquid, gaseous, radioactive, or solid waste substance resulting from any process of industry, manufacturing, trade, or business or from the development of any natural resource.

  • Industrial wastes means the liquid wastes from industrial manufacturing processes, trade, or business as distinct from sanitary sewage.

  • Animal waste means any waste consisting of animal matter that has not been processed into food for human consumption.

  • Special Waste means those substances as defined in the Illinois Environmental Protection Act, 415 ILCS 5/3.45, and further defined in Section 809.103 or 35 Illinois Administrative Code, Subtitle G, Ch.1.

  • Residential waste means any refuse generated on the premises as a result of residential activities. The term includes landscape waste grown on the premises or deposited thereon by the elements, but excludes garbage, tires, trade wastes and any locally recyclable goods or plastics.

  • Soil means all unconsolidated mineral and organic material of any origin.

  • Pathological waste means waste material consisting of only human or animal remains, anatomical parts, and/or tissue, the bags/containers used to collect and transport the waste material, and animal bedding (if applicable).

  • Surface waters means all waters of the state as defined in G.S. 143-212 except underground waters

  • Agricultural waste means biomass waste materials capable of decomposition that are produced from the

  • Landscape waste means any vegetable or plant waste except garbage. The term includes trees, tree trimmings, branches, stumps, brush, weeds, leaves, grass, shrubbery, and yard trimmings.

  • Process Wastewater means any water which, during manufacturing or processing, comes into direct contact with or results from the production or use of any raw material, intermediate product, finished product, by-product, or waste product.

  • Cannabis waste means waste that is not hazardous waste, as defined in Public Resources Code section 40141, that contains cannabis and that has been made unusable and unrecognizable in the manner prescribed in sections 5054 and 5055 of this division.

  • Coastal waters means those waters of Long Island Sound and its harbors, embayments, tidal rivers, streams and creeks which contain a salinity concentration of at least five hundred parts per million under low flow conditions.

  • Topsoil means a varying depth (up to 300 mm) of the soil profile irrespective of the fertility, appearance, structure, agricultural potential, fertility and composition of the soil;

  • Subsurface Borings and Testing means borings, probings and subsurface explorations, laboratory tests and inspections of samples, materials and equipment; appropriate professional interpretations of all the foregoing.

  • Medical Waste means isolation wastes, infectious agents, human blood and blood products, pathological wastes, sharps, body parts, contaminated bedding, surgical wastes, potentially contaminated laboratory wastes, and dialysis wastes.

  • Green Waste Biodegradable waste that can be composed of plant material such as grass or flower cuttings, hedge trimmings and brush less than 1 inch in diameter.

  • Incineration means an engineered process involving burning or combustion of solid waste to thermally degrade waste materials at high temperatures;

  • Bulky Waste means business waste or domestic waste which by virtue of its mass, shape, size or quantity is inconvenient to remove in the routine door-to-door council service provided by the council or service provider;