KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES(KIGAM) Patent applications |
Patent application number | Title | Published |
20130200001 | MAGNETITE AND BIRNESSITE AGGREGATE-FORM MIXTURE, SYNTHESIS METHOD THEREFOR, AND WATER-TREATMENT METHOD USING MIXTURE - The present invention relates to a magnetite-birnessite mixture, to a synthesis method therefor, and to a water-treatment method using the same. The magnetite-birnessite mixture synthesis method according to the present invention includes: a first synthesis step in which magnetite is synthesized; a second synthesis step in which manganese is made to adsorb onto the surface of the magnetite by supplying manganese while maintaining a basic state in the presence of the magnetite, and then synthesizing birnessite on the surface of the magnetite by supplying an oxidizing agent and sodium, thereby synthesizing a mixture in which magnetite and birnessite are bound together; and a purification step in which the mixture of magnetite and birnessite is purified. | 08-08-2013 |
20120160752 | OXIDATION POND INCLUDING BAFFLES FOR TREATING ACID MINE DRAINAGE - Provided is an oxidation pond for treating acid mine drainage discharged from an abandoned mine. The oxidation pond comprises: an inlet into which mine drainage is introduced; a retention pond in which the mine drainage introduced into the inlet resides; and an outlet through which the mine drainage is discharged from the retention pond, so that iron in the mine drainage is oxidized and precipitated during residence of the mine drainage in the retention pond, wherein a neutralizing agent that increases the pH of the mine drainage to accelerate the iron precipitation reaction is placed in the retention pond. | 06-28-2012 |
20120160751 | OXIDATION POND INCLUDING NEUTRALIZING AGENT FOR TREATING ACID MINE DRAINAGE - Provided is an oxidation pond for treating acid mine drainage discharged from an abandoned mine. The oxidation pond comprises: an inlet into which mine drainage is introduced; a retention pond in which the mine drainage introduced into the inlet resides; and an outlet through which the mine drainage is discharged from the retention pond, so that iron in the mine drainage is oxidized and precipitated during residence of the mine drainage in the retention pond, wherein a neutralizing agent that increases the pH of the mine drainage to accelerate the iron precipitation reaction is placed in the retention pond. | 06-28-2012 |
20120045284 | METHOD FOR REMEDIATING ARSENIC-CONTAMINATED SOIL - Provided is a method for remediating arsenic-contaminated soil, including: a collection step of collecting arsenic-contaminated soil; a washing step of adding the collected soil to a washing solution, which is acidic in nature and provides reducing conditions to the soil, so as to remove arsenic from the soil and transfer the removed arsenic to the washing solution; a solid-liquid separation step of separating the soil and the washing solution from each other after the washing step; and a post-treatment step of removing arsenic from the washing solution, which was separated in the solid-liquid separation step, and employing the soil for remediation. | 02-23-2012 |
20120041692 | METHOD OF MEASURING PUMPING AMOUNT OF GROUNDWATER BY USING WATER LEVEL FLUCTUATION AND WATER LEVEL MEASURING SENSOR - A method of measuring a pumping amount of groundwater by using water level fluctuation, a water level measuring sensor including an arithmetic operation unit for calculating a pumping amount by using the method, and a computer-readable recording medium having recorded thereon a program for executing the method are disclosed. The method whereby a total pumping amount of groundwater pumped by using a pumping pump is calculated for a predetermined period, includes: obtaining groundwater level data according to a measurement time by measuring fluctuation of a groundwater level for a predetermined period continually at time intervals; comparing a typical pattern of a groundwater level formed in a full pumping period including an initial stage of pumping at which groundwater starts to be pumped by operating the pumping pump and the groundwater level drops rapidly, a quasi-balance period in which an amount of drop of the groundwater level according to time decreases compared to the initial stage of pumping, and a recovery period in which an operation of the pumping pump stops and the groundwater level rises, with the obtained groundwater level data and sorting data for forming a pattern corresponding to the typical pattern of the groundwater level from the groundwater level data; calculating a total time when pumping has been performed, by using a measurement time of the sorted data; and calculating a total pumping amount by using the total pumping time calculated. | 02-16-2012 |
20120039668 | METHOD OF DETECTING GAS LEAKAGE IN GEOLOGICAL GAS RESERVOIR BY USING PRESSURE MONITORING AND GEOLOGICAL GAS STORAGE SYSTEM - A geological gas storage system and a method of detecting gas leakage from the geological gas storage system by using pressure monitoring, the geological gas storage system including: a formation structure including a reservoir formed of a permeable rock material in deep onshore/offshore formations, an impermeable cap rock layer formed above the reservoir, and an upper permeable formation formed of a permeable rock material above the cap rock layer; a hollow casing inserted in inner walls of the gas injection well bored from the ground to the reservoir and including a portion disposed at the same depth as a depth of the reservoir in which a plurality of gas injection holes are perforated in a circumferential direction of the casing; and a pressure sensor disposed at the same depth as a depth of the upper permeable formation and detecting pressure of the upper permeable formation. The method of detecting gas leakage from the geological gas storage system by using pressure monitoring includes detecting gas leakage from the reservoir by measuring a change in pressure of the upper permeable formation by using a pressure sensor installed at the upper permeable formation in the geological gas storage system having the above structure. | 02-16-2012 |