Entries |
Document | Title | Date |
20080317552 | Activated carbon treatment of sediments contaminated with hydrophobic organic compounds - The present invention provides a method of remediating sediments through the use of coal-, plant-, or wood-derived carbon sorbents (i.e., black carbon). The strategy employs the addition to sediments of coal- and plant- or wood-derived carbon sorbents, so-called black carbon particles like activated carbon, char, charcoal, coal, and coke. These black carbon materials sorb hydrophobic organic compound contaminants strongly, thereby reducing environmental exposure and human health risk to such contaminants. By sorbing the contaminants from sediments, this approach reduces environmental exposure and allows sediments to be disposed of as non-hazardous material. This is a cost-effective and efficient remediation technology for contaminated sediment management that can significantly reduce expenditures and other problems with conventional approaches for dredging and remediating contaminated sediments. In particular for pesticides, high sorptive loadings are achievable, resulting in a significant mass of pesticide per mass sorbent. The treatment benefit also improves with contact time. | 12-25-2008 |
20090103983 | LOW-IMPACT DELIVERY SYSTEM FOR IN SITU TREATMENT OF CONTAMINATED SEDIMENT - An agglomerate for use in economical bulk treatment of contaminated sediments with minimal environmental impact is formed from a sorbent, bentonite clay and sand. The agglomerate has sufficient density so as to sink through a water column into sediment below the water column and is still sufficiently light as to be capable of mixing with the sediment when subjected only to bioturbation. The agglomerate can be formed into pellets and applied to a water column over contaminated sediment by broadcast methods, so as to permit economical remediation of contaminated sediment with negligible environmental impact. | 04-23-2009 |
20090142137 | ASSESSMENT AND REMEDIATION PROCESS FOR CONTAMINATED SITES - Process for assessing and remediation of a contaminated site comprising the steps of assessing the contaminated soil and/or groundwater at a contaminated site involving geophysical scans of the contaminated site and pH, microbial, salinity and metal testing of the soil and/or water contained in the site or other site specific parameters. Remediation of the soil and/or water at the site insitu is followed involving electro-kinetics of the contaminated site. Water testing is carried out during remediation to determine the effect of remediation. Following remediation, an assessment of the remediated soil and water involves electromagnetic scans of the contaminated site as well as pH, microbial, salinity and metal testing of the soil and water contained in the site Once the results of all tests are analysed, the electro-kinetic remediation can be deemed successful or optimized and continued for an extended duration. Effluent water collected from electrodes during remediation can be treated using electrodialysis or suitable technology and then used to flush the vadose zone or reinjected into the groundwater zone the water was extracted from. | 06-04-2009 |
20090232602 | MICROWAVE SYSTEM AND METHOD FOR CONTROLLING THE STERILIZATION AND INFESTATION OF CROP SOILS - The method and the system are applicable in farming activities, pest control, industry, agriculture, forestry, etc. for controlling insects and other plant pests from crops. The system performing the method comprises a source of lethal impact which is a microwave generator with a microwave guiding element directed so as to infested soil. The microwave energy is transferred from a microwave generator into the pests located in the desired soil location, killing the plant insects and pests. | 09-17-2009 |
20100129157 | HEATING AND STERILIZING APPARATUS AND METHOD OF USING SAME - An apparatus ( | 05-27-2010 |
20100202836 | SOIL OR ROCK CONDITIONING MACHINE - A soil and/or rock conditioning machine including a feed hopper to feed material to be conditioned to a feed conveyor and a mixing chamber including one or more rotors to accelerate the material particles direct from the end of the feed conveyor against inclined surfaces in the mixing chamber. | 08-12-2010 |
20110236136 | BIOREMEDIATION PROCESS USING LIQUEFIED PETROLEUM GAS - A method is provided for stimulating anaerobic degradation of a subsurface contaminant, comprising the steps of vaporizing liquefied petroleum gas (LPG) to form a treating gas and directing the treating gas to at least one subsurface injection site that includes the subsurface contaminant; wherein the treating gas stimulates anaerobic degradation of at least a portion of the subsurface contaminant. | 09-29-2011 |
20110268507 | SYSTEM AND THOD FOR REMEDIATION OF ORGANIC CONTAMINATED SOIL - A system and a method for remediation of organic contaminated soil are provided, which comprises M*N electrodes to form an electrode matrix of symmetrical electric field structure. The field intensity is uniform in those points that are equidistant from each electrode in remediation area. The electrodes arrayed in mesh style in remediation area are carried out electrokinetic remediation. To exchange between positive polarity and negative polarity of the electrodes periodically is to make each electrode be a state of anode intermittently which has preferable remediation efficiency, by operation mode of reversing row/column electrode groups in manner of electrical scanning. | 11-03-2011 |
20120014748 | NOVEL SOIL DIAGNOSIS METHOD - Disclosed are a soil diagnosis method for diagnosing soil using a cycle activity indicator which is calculated using the following factors (I) to (III): (I) the ammonia reduction rate in target soil; (II) the activity of forming phosphoric acid from phytic acid in the target soil; and (III) the activity of forming potassium from compost in the target soil, and (IV) the soil bacteria count in the soil; and a soil quality control method; and a soil improvement method. | 01-19-2012 |
20120020736 | METHOD FOR THE RECOVERY OF DEGRADED AREAS USING GENETICALLY MODIFIED PLANT SPECIES - The present invention relates to the search for and choice of forest plants adapted to severe edaphological conditions in soils contaminated by pollutants, which plants are capable of surviving in most parts of the world and cannot enter the trophic chain. The genetic transformation thereof considerably enhances the metal absorption rate and storage capacity thereof and also makes it easier for said absorption to cover the majority of pollutants or harmful substances. | 01-26-2012 |
20120034033 | METHOD OF BIOLOGICAL SOIL DECONTAMINATION - A method of biological soil decontamination, including the introduction into the soil of a product that contains a material chosen from a group consisting of proteins, carbohydrates and lipids. The product introduced into the soil does not contain any unprocessed fresh plants or unprocessed fresh plant residues. The method also includes the application of a barrier layer over the soil, e.g., between the soil and the air. | 02-09-2012 |
20120057936 | Methods and Composition for Improving Soil Quality - A soil-amendment product for preparing a damaged or degraded soil ecosystem to establish a self-sustaining floral/vegetative rhizosphere contains a mixture of composted organic biomass, fiber, charcoal, and small amounts of inoculants to promote the growth of beneficial microorganisms including mycorrhizal fungi and nitrogen-fixing bacteria. Embodiments also contain a water-holding agent such as a starch-based polymer that is effective to prevent water from flowing downhill or seeping away from the surface. Methods of application and other uses for the soil-amendment product are also described and claimed. | 03-08-2012 |
20120087736 | Method and Apparatus for Controlling Burrowing Animals - In a method of controlling burrowing animals, a slurry of a natural soil component and water is generated. The slurry is pumped into a tunnel and den system dug by the burrowing animal until the tunnel and den system is filled by the slurry. An apparatus for controlling burrowing animals includes a first tank that contains water. A second tank contains a natural soil component. A water pump pumps water from the water tank into the second tank. A plurality of nozzles receives water from the water pump and sprays water from the water tank into the bottom portion of the second tank, so as to generate a slurry of a natural soil component and water. A slurry pump is configured to pump the slurry. A slurry hose is configured to delivery the slurry from the slurry pump into a tunnel and den system dug by a burrowing animal. | 04-12-2012 |
20120141209 | RDX PLANT INDICATOR SYSTEM - A method of detecting RDX in soil includes the steps of: planting a plurality of prickly sida plants in a defined area; remotely monitoring the pigmentation of the prickly sida plants using hyperspectral imaging; and identifying one or more areas within the defined area that are contaminated by RDX based on the monitored pigmentation of the prickly sida plants. | 06-07-2012 |
20120213589 | SYSTEM, APPARATUS AND METHOD FOR SOIL REMEDIATION - In one aspect, a soil remediation device is provided. The soil remediation device can have a collector for receiving soil to be treated. From the collector, the soil can be moved into a comminuting section where the soil can be broken up, typically with blades and flail hammers. The comminuting of the soil can cause the soil to be heated up as a result of friction, causing some contaminants in the soil to be volatized and released therefrom. Once the soil has been comminuted by the soil remediation device, it can be discharged. A fume hood can cover the outlet of the comminuting section so that soil that has been discharged from the comminuting section of the soil remediation device is substantially covered by the fume hood. The fume hood can act to contain volatized contaminants exiting the comminuted soil and rising upwards in the fume hood. | 08-23-2012 |
20120288333 | APPARATUS AND METHOD FOR STERILIZING SEED BEDS IN SOIL - An apparatus and a method are described for sterilizing seed beds in soil. The apparatus is comprised of at least one hot water injecting chamber defined by a pair of spaced-apart side walls secured to one another and defining therebetween a passage. A plurality of jet holes are provided in an inner surface of each of the side walls and facing the direction of the passage. The jet holes communicate with a manifold associated with each side wall which is connected to a supply of pressurized hot water. Each of the side walls is configured to penetrate into the soil in at least a lower region thereof whereby to inject into the soil in the passage between the pair of plates the pressurized hot water as the hot water injecting chamber is displaced in the soil. | 11-15-2012 |
20130094907 | ELECTRO-REMEDIATION - Embodiments provided herein relate to electro-remediation. In some embodiments, an apparatus for collecting metal is provided and includes a helically shaped electrode. An electrical current can be applied to the apparatus causing metal and ions thereof to become fixed to the electrode. | 04-18-2013 |
20130108373 | METHOD FOR TREATING SOIL MATERIAL | 05-02-2013 |
20130115004 | SOIL CLEANING METHOD - The present invention provides a soil cleaning method. The soil cleaning method is characterized in that after a pre-treatment step of mixing a dehydrating agent in soil to reduce a water content of the soil to 10 mass % or less is performed, a magnetic separation step of feeding the soil whose water content is reduced to 10 mass % or less in the pre-treatment step, to a dry magnetic separator to separate and remove a contaminant in coarse soil as magnetically attracted matter is performed. By bringing the soil into a dry state to separate the soil into magnetically attracted matter and magnetically unattracted matter and collecting the heavily contaminated magnetically attracted matter, it is possible to facilitate separating fine soil from contaminated soil, which makes it possible to easily reduce the content of the contaminant in the coarse soil. | 05-09-2013 |
20130129423 | METHOD AND ARRANGEMENT FOR PREVENTING MOVEMENT OF STRUCTURE - The invention relates to a method and arrangement for preventing movement of a structure. An expansion element ( | 05-23-2013 |
20130315671 | PROCESS FOR INSITU TREATMENT OF SOIL AND GROUNDWATER - A process for insitu treatment of at least one contaminant in groundwater, the process comprises the steps of: installing a permeable reactive barrier in the flow path of the at least one contaminant, wherein the installation of the permeable reactive barrier comprises the steps of: boring a first borehole with a portion longitudinally extending; filling the longitudinally extending portion with a reactive material comprising a solid reactant configured to react with the at least one contaminant in the groundwater to produce at least one product having less hazardous characteristics than the at least one contaminant; boring a second longitudinally extending portion and filling the second longitudinally extending portion with the reactive material. | 11-28-2013 |
20140119832 | OVERBURDEN/TAILINGS MIXTURES FOR ENGINEERED TAILINGS DEPOSIT CONTROL - A process of dewatering tailings is provided comprising providing overburden having a moisture content ranging from about 15 wt % to about 25 wt % and comminuting the overburden to a first size; providing tailings having a solids content ranging from about 10 wt % to about 60 wt %; adding the tailings to the first sized overburden to form treated overburden and comminuting the treated overburden to a second size; and depositing the second sized treated overburden to produce a solidified deposit. | 05-01-2014 |
20140119833 | OVERBURDEN/TAILINGS MIXTURES FOR ENGINEERED TAILINGS DEPOSIT CONTROL - A process for enhancing the solidification of tailings is provided comprising providing overburden having a moisture content ranging from about 15 wt % to about 25 wt % and comminuting the overburden to a first size; providing tailings having a solids content ranging from about 1 wt % to about 70 wt %; adding the tailings to the first sized overburden to form treated overburden and comminuting the treated overburden to a second size; and depositing the second sized treated overburden to produce a substantially solidified deposit. | 05-01-2014 |
20150037099 | PARTICLE SIZE SELECTIVE REMEDIATION SYSTEM AND METHOD FOR HEAVY METALS-CONTAMINATED SOIL BY DRY-DISINTEGRATION AND SEPARATION - The present invention relates to a system and method of remediating heavy metal-contaminated soil using dry disintegration in a particle size-selective manner. The system for remediating contaminated soil comprises: a pretreatment unit for pretreating the contaminated soil to control the water content and the size of the soil; a disintegration unit for disintegrating the pretreated soil into individual particles; a particle separation unit for separating the disintegrated particles a standard particle size; a heavy metal removal unit for peeling off the surface of the separated soil particles larger than the standard particle size using a surface friction force and an impact force to remove heavy metals in dry condition; and a separation and collection unit for separating and collecting the peeled-off surface from the soil particles. | 02-05-2015 |
20150093199 | Contaminated Soil Purification Method - A contaminated soil remediation method activates a microorganism in soil contaminated with a toxic chemical substance. The contaminant is decomposed by a biodegradation reaction of the microorganism. The method involves forming a boring hole reaching into contaminated soil. A rod whose end is provided with a jet device is inserted into the boring hole. The contaminated soil is cut in a manner forming a flat-plate area in which the soil is intermittently cut by a microorganism activator, and the soil and the microorganism activator are mixed, by jetting water and/or the microorganism activator from the jet device. | 04-02-2015 |
20160096212 | SOIL RECLAMATION SYSTEM AND PROCESS - A system for treating a contaminated soil. The system includes a soil receptacle, a first conveyance mechanism in communication with the soil receptacle, and a second conveyance mechanism in communication with the first conveyance mechanism. The second conveyor is placed lower relative to the first conveyor so that the contaminated soil drops in elevation as it passes from the first conveyor to the second conveyor. One or more pretreatment sprayers are positioned substantially at a junction between the first conveyor and the second conveyor and that spray the contaminated soil as it moves from the first conveyor to the second conveyor. One or more sprayers are also positioned on the second conveyor such that they can spray the contaminated soil as it passes. An aerator is located at a depositing end of the second conveyor, by which the contaminated soil is further aerated as it drops of the depositing end of the second conveyor and contacts the aerator. One or more optional final sprayers can be positioned on the second conveyor such that they are able to spray the contaminated soil as it drops off the depositing end and contacts the aerator. | 04-07-2016 |
20170232489 | METHOD FOR DECONTAMINATING SOIL, AND INSTALLATION FOR IMPLEMENTING SAME | 08-17-2017 |