| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 210747700 | Groundwater treatment | 10 |
| 20120145648 | Treatment System and Method for Degrading Chlorinated DNAPL - A treatment system for degrading chlorinated dense non-aqueous phase liquids (DNAPLs) is disclosed. The treatment system comprises a solvent system and hydrophobic zero valent irons distributed in the solvent system. In addition, the method of remediation of groundwater is also disclosed by using the treatment system. | 06-14-2012 |
| 20120318747 | Processes for remediation of contaminant plumes - When a large-scale contaminant plume is located under a surface area with conditions that prevent placement of a network of injection and associated extraction wells, embodiments of the invention may be used to pump a specific volume of the contaminant plume to at least one remote in-situ treatment cell, comprising at least one injection well surrounded by a plurality of associated extraction wells, where each extraction well is less than 300 feet from the associated injection well, and has a treatment zone with treatment reagent between injection and associated extraction wells. | 12-20-2012 |
| 20130292343 | SYSTEM AND METHOD FOR COLLECTING COMPOUNDS IN THE GROUND - The present invention relates to a system ( | 11-07-2013 |
| 210747800 | By chemical treatment | 7 |
| 20110272364 | PROCESS FOR REMOVING OXIDANTS FROM WATER INJECTED INTO A SUBSURFACE AQUIFER TO PREVENT MOBILIZATION OF TRACE METALS - A method for providing for the use of underground aquifers for water storage for municipalities or recharge. Water is treated and injected for storage in the aquifer by the addition of a small amount of a sulfide compound to remove dissolved oxygen and prevent dissolution of negative valence sulfur bearing minerals. such as pyrite. in the subsurface. The stored water may be subsequently withdrawn from the aquifer and treated to remove residual amounts of sulfide ions. The withdrawn water being suitable as potable water, irrigation water, industrial use water, and aquifer water level enhancement water. | 11-10-2011 |
| 20130248458 | Organic Acid Activation of Persulfates - The present invention is directed to a method of oxidizing an organic compound present in soil, groundwater, process water or wastewater comprising contacting such organic compound with a persulfate and an organic acid selected from the group consisting of ascorbic acid, formic acid, oxalic acid, lactic acid and citric acid, wherein the molar ratio of such organic acid to persulfate is between 1:100 and 3:1. | 09-26-2013 |
| 20140116959 | MANGANESE-MEDIATED REDOX PROCESSES FOR ENVIRONMENTAL CONTAMINANT REMEDIATION - Methods and compositions for the remediation of environmental contaminants using redox reactions are described. The redox reactions include manganese compounds and peroxide generating compounds. The methods and compositions are also useful for the remediation of highly oxidized environmental contaminants. | 05-01-2014 |
| 20140116960 | OXIDATION OF CONTAMINANTS - Various embodiments of contaminant removal systems, compositions, and methods are described herein. In one embodiment, a method for oxidizing a contaminant includes contacting the contaminant with a peroxygen compound and initializing, maintaining, or propagating degradation of the peroxygen compound with an oxygenated organic compound, thereby releasing oxidizing radicals. The method also includes oxidizing the contaminant with the released oxidizing radicals. | 05-01-2014 |
| 20150041409 | Reactive Treatment Cell and Systems For Environmental Remediation - Reactive treatment cells (RTCs) are described in combination with sediment capping systems as a means for environmental remediation. RTCs include an impermeable housing defining an interior, a permeable ceiling and floor typically including filtration materials such as geotextiles, and at least one interior compartment for treatment reagents. One RTC includes a gabion-like cage structure retaining a geomembrane-supported geosynthetic clay liner (GM-GCL) housing, while a second embodiment includes a hard, cylindrical shell as a replaceable reagent cartridge. RTCs may be employed in initial capping system installations or retrofitted into existing capping systems. RTCs may include optional baffles, flow restrictors, floating discs, sensor probes, and two or more serial reagent zones or compartments. | 02-12-2015 |
| 20150291458 | Ground Water Treatment System and Methods of Use - A system and methods of treating groundwater to provide potable water for non-municipal or residential networks using stabilized hydrogen peroxide as a primary oxidant. Residual stabilized hydrogen peroxide is maintained as a secondary disinfectant and integrity indicator in the post-treatment water flow. | 10-15-2015 |
| 20160030988 | SUSTAINED RELEASE REACTANT BLENDS - There is provided according to the present invention a sustained release reactant blend and methods for making the sustained release reactant blends. There is further provided methods for using such blends in the in situ or ex situ remediation of contaminated groundwater and in the treatment of water and wastewater. There is further provided, according to the present invention, methods for controllably coating reactant blends whereby such coated blends exhibit sustained release properties and have an open structure. | 02-04-2016 |
