Abstract

The present application relates to an integrated system for regenerating sodium bicarbonate and recovering ammonia, and an integrated method for regenerating sodium bicarbonate and recovering ammonia by using same. According to the integrated system for regenerating sodium bicarbonate and recovering ammonia, and the integrated method for regenerating sodium bicarbonate and recovering ammonia by using same, of the present application, sodium bicarbonate can be regenerated and ammonia can be recovered from ammonium sulfate wastewater, generated during sodium bicarbonate regeneration, so as to be reused as ammonia water, and thus the cost of purchasing ammonia water required for process operation can be reduced, and additional operating revenue can be created through the commercialization of the generated ammonia water.

IPC Classes  ?

• C01D 7/00 - Carbonates of sodium, potassium, or alkali metals in general
• C01D 7/22 - Purification
• C01C 1/26 - Carbonates or bicarbonates of ammonium
• C01C 1/02 - Preparation or separation of ammonia
• C01C 1/24 - Sulfates of ammonium
• B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
• B01D 53/50 - Sulfur oxides
• B01D 19/00 - Degasification of liquids
• B01D 5/00 - Condensation of vapoursRecovering volatile solvents by condensation

Abstract

In corrosion rate measurement equipment according to an atmospheric environment according to the present invention, the length of a conductive pattern for temperature correction of a corrosion sensor is greater than the length of a conductive pattern for corrosion measurement, and the surface area of the conductive pattern for temperature correction of a corrosion sensor is less than the surface area of the conductive pattern for corrosion measurement so that a measured error of reference resistance measured values measured in the conductive pattern for temperature correction is minimized and thus the measured values measured in the conductive pattern for corrosion measurement can be more accurately corrected by using the reference resistance measured value and thus, corrosion rate can be more accurately measured.

IPC Classes  ?

• G01N 17/02 - Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
• G01D 21/02 - Measuring two or more variables by means not covered by a single other subclass

Abstract

Disclosed is a neutralization method for neutralizing purified dredged soil, which has been washed with an acid in order to remove contaminants. According to the neutralization method, a solid neutralizer is added to and mixed with the purified dredged soil in order to neutralize the purified dredged soil in a solid state. In addition, according to the neutralization method, in order to neutralize used process water in a liquid state, having been used for acid washing, a liquid neutralizer is added to and mixed with the used process water.

IPC Classes  ?

• B09C 1/08 - Reclamation of contaminated soil chemically
• C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
• C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities

Abstract

The present invention relates to an ammonia recovery device and operating method coupled with carbon dioxide degassing. In particular, the present invention relates to a method of extracting methane gas by fermenting organic waste, separating digestive fluid into liquid waste water and ammonia gas through a degassing technique, and treating an organic waste for manufacturing liquid fertilizer through the recovery of the separated ammonia.

IPC Classes  ?

• C05F 9/04 - Biological compost
• C02F 1/20 - Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
• C02F 11/04 - Anaerobic treatmentProduction of methane by such processes
• B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless

Abstract

The present invention relates to a hybrid CNT-RO membrane pressure vessel. The reverse osmosis separation membrane pressure vessel according to one embodiment of the present invention comprises a seawater inlet, multiple reverse osmosis separation membrane modules, a permeate water flow channel, a permeate water outlet, and a concentrated water outlet, and one or more modules of the multiple reverse osmosis separation membrane modules, which are located at the front end of the pressure vessel, constitute a first module unit, and modules located behind the first module unit constitute a second module unit, and the flux of the respective modules constituting the second module unit may be greater than that of the respective modules constituting the first module unit.

IPC Classes  ?

• B01D 61/08 - Apparatus therefor
• B01D 61/02 - Reverse osmosisHyperfiltration

Abstract

The present invention relates to a highly-concentrated organic waste water system and waste water treating method using a heating membrane filtration concentrating device. More particularly, the present invention relates to a method which: applies a heating membrane filtration concentrating device to a membrane-coupled anaerobic digestion process; simultaneously increases the water treated by the membrane filtration concentrating device and reduces the amount of energy used to heat an anaerobic digestion tank by producing a concentrated liquid heated in a membrane filtration concentrating process and returning same to the anaerobic digestion tank; ensures stability in a downstream waste water treating process by raising the water temperature of water treated in the membrane filtration concentrating device; and increases the cleaning efficiency of the membrane filtration concentrating device and the service life of the membrane by raising the temperature of washing chemicals during washing of the membrane.

IPC Classes  ?

• C02F 11/04 - Anaerobic treatmentProduction of methane by such processes
• B01D 65/00 - Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
• B01D 61/00 - Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltrationApparatus, accessories or auxiliary operations specially adapted therefor

Abstract

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.

IPC Classes  ?

• B09C 1/00 - Reclamation of contaminated soil
• B02C 21/00 - Disintegrating plant with or without drying of the material
• B02C 23/14 - Separating or sorting of material, associated with crushing or disintegrating with more than one separator
• B02C 19/06 - Jet mills
• B02C 23/08 - Separating or sorting of material, associated with crushing or disintegrating
• B07B 4/02 - Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall

Abstract

A device for refining biogas according to the present invention controls the operation of an adsorption module according to the methane concentration of biogas, which flows into a blower, and recovers and recirculates generated biomethane, when the methane concentration is below a threshold, thereby further improving the quality of finally produced biomethane. In addition, operation of a cooler is controlled according to the temperature of biogas, which flows into the blower, thereby preventing degradation of refinement performance due to a change of the atmospheric temperature or the temperature of the biogas. As a result, the refinement performance is improved, thereby increasing the amount of produced biomethane and further improving the quality of biomethane. In addition, biomethane is recovered and recirculated according to the methane concentration of the produced biomethane, thereby improving the recovery ratio of biomethane. In addition, the methane concentration of residual gas or purge gas, which is discharged from the adsorption module into the atmosphere and discarded, is measured to recover and recirculate the residual gas or purge gas according to the methane concentration, thereby maximizing the methane recovery ratio.

IPC Classes  ?

• B01D 53/047 - Pressure swing adsorption
• B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
• C07C 7/12 - Purification, separation or stabilisation of hydrocarbonsUse of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers

Abstract

The present invention relates to a system for remediating highly contaminated fine soil using multiple micro hydrocyclones that includes: a mill adapted to mix contaminated soil with water and to individualize the soil; a screen adapted to separate the soil introduced from the mill into soil having given particle sizes; a separator adapted to finely separate the soil having particle sizes of less than a given value by particle size from the soil having the given particle sizes separated through the screen; a remediating unit adapted to wash the finely separated soil introduced from the separator by particle size by means of process water for washing; and a filtering unit adapted to separately discharge the soil washed and introduced through the remediating unit and the process water for washing contained in the soil.

IPC Classes  ?

• B09C 1/02 - Extraction using liquids, e.g. washing, leaching
• B07B 7/086 - Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by the winding course of the gas stream
• B04C 9/00 - Combinations with other devices, e.g. fans
• B07B 13/04 - Grading or sorting solid materials by dry methods, not otherwise provided forSorting articles otherwise than by indirectly controlled devices according to size

Abstract

The present invention relates to a system and method for remediating contaminated soil through separation and process of highly contaminated coarse soil, the system including: a screen adapted to separate the contaminated soil introduced into soil having given particle sizes; multiple hydrocyclones adapted to re-separate the soil having particle sizes of more than the given values by particle size from the soil having the given particle sizes separated through the screen; a remediating unit adapted to wash the soil separated through the multiple hydrocyclones by particle size; and a filtering unit adapted to separate water from the soil washed through the remediating unit.

IPC Classes  ?

• B09C 1/02 - Extraction using liquids, e.g. washing, leaching
• C02F 1/00 - Treatment of water, waste water, or sewage
• B07B 13/04 - Grading or sorting solid materials by dry methods, not otherwise provided forSorting articles otherwise than by indirectly controlled devices according to size
• B07B 1/04 - Stationary flat screens
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• B07B 1/40 - Resonant vibration screens
• C02F 101/10 - Inorganic compounds
• C02F 101/20 - Heavy metals or heavy metal compounds

Abstract

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.

IPC Classes  ?

• B02C 19/06 - Jet mills
• B07B 13/04 - Grading or sorting solid materials by dry methods, not otherwise provided forSorting articles otherwise than by indirectly controlled devices according to size
• B09C 1/00 - Reclamation of contaminated soil

Abstract

The present invention relates to a system for remediating highly contaminated fine soilusing multiple micro hydrocyclones that includes: a mill adapted to mix contaminated soil with water and to individualizethe soil; a screen adapted to separate the soil introduced from the mill into soil having given particle sizes; a separator adapted to finely separate the soil having particle sizes of less than a given value by particle size from the soil having the given particle sizes separated through the screen; a remediating unit adapted to wash the finely separated soil introduced from the separator by particle size by means of process water for washing; and a filtering unit adapted to separately discharge the soil washed and introduced through the remediating unit and the process water for washing contained in the soil.

IPC Classes  ?

• B09C 1/02 - Extraction using liquids, e.g. washing, leaching
• B04C 5/00 - Apparatus in which the axial direction of the vortex is reversed
• B03B 9/00 - General arrangement of separating plant, e.g. flow sheets
• B07B 13/04 - Grading or sorting solid materials by dry methods, not otherwise provided forSorting articles otherwise than by indirectly controlled devices according to size

Abstract

The present invention relates to a system and method for remediating contaminated soil through separation and process of highly contaminated coarse soil, the system including: a screen adapted to separate the contaminated soil introduced into soil having given particle sizes; multiple hydrocyclones adapted to re-separate the soil having particle sizes of more than the given values by particle size from the soil having the given particlesizes separated through the screen; a remediatingunit adapted to wash the soil separated through the multiple hydrocyclones by particle size; and a filtering unit adapted to separate water from the soil washed through the remediating unit.

IPC Classes  ?

• B09C 1/02 - Extraction using liquids, e.g. washing, leaching
• B04C 5/00 - Apparatus in which the axial direction of the vortex is reversed
• B03B 9/00 - General arrangement of separating plant, e.g. flow sheets
• B07B 13/04 - Grading or sorting solid materials by dry methods, not otherwise provided forSorting articles otherwise than by indirectly controlled devices according to size

Abstract

The present invention relates to a tunnel reinforcement structure capable of controlling ground displacement using pressurization, including: reinforcements adapted to be forcedly inserted into the bored holes formed along the outer surface of the section to be excavated of the tunnel; auxiliary reinforcements disposed between the reinforcements from a point between 4 m and 8 m inwardly from the ends of the reinforcements; steel ribs disposed on the inner four faces of the excavation face of the tunnel; pressurizing bags each provided between the steel ribs and the excavated inner surface of the tunnel; a concrete part adapted to be cast between the steel ribs; and lining concrete adapted to be cast to the steel ribs and the inner surface of the concrete part.

IPC Classes  ?

• E21D 11/00 - Lining tunnels, galleries or other underground cavities, e.g. large underground chambersLinings thereforMaking such linings in situ, e.g. by assembling
• E21D 9/04 - Driving tunnels or galleries through loose materialsApparatus therefor not otherwise provided for
• E21D 11/10 - Lining with building materials with concrete cast in situShuttering or other equipment adapted therefor

Abstract

The present invention relates to an apparatus and method for treating organic waste. The apparatus for treating organic waste comprises an acid fermenter, a methane fermenter, a cushion chamber and a separator membrane device, vortex flow generating means having a plurality of nozzles installed in the methane fermenter to enable anaerobically digested water in the methane fermenter to be stirred by a vortex flow, a gas holder installed in the cushion chamber to compensate for the negative pressure generated when the digested water contained in the cushion chamber is discharged, and means for switching the injection direction of the digested water being supplied to the separator membrane device. According to the present invention, the performance of stirring the organic waste is maximized by the vortex flow generated from an existing stirrer and nozzles, the digested water is smoothly discharged from the cushion chamber, contamination of a tubular filtration membrane is remarkably delayed, the life of the filtration membrane is elongated and costs for replacing filtration members are minimized.

IPC Classes  ?

• C02F 3/28 - Anaerobic digestion processes
• C02F 11/04 - Anaerobic treatmentProduction of methane by such processes

Abstract

The present invention relates to a tunnel reinforcement structure capable of controlling ground displacement using pressurization, including: reinforcements adapted to be forcedly inserted into the bored holes formed along the outer surface of the section to be excavated of the tunnel; auxiliary reinforcements disposed between the reinforcements from a point between 4 m and 8 m inwardly from the ends of the reinforcements; steel ribs disposed on the inner four faces of the excavation face of the tunnel; pressurizing bags each provided between the steel ribs and the excavated inner surface of the tunnel; a concrete part adapted to be cast between the steel ribs; and lining concrete adapted to be cast to the steel ribs and the inner surface of the concrete part.

IPC Classes  ?

• E21D 11/00 - Lining tunnels, galleries or other underground cavities, e.g. large underground chambersLinings thereforMaking such linings in situ, e.g. by assembling

Abstract

The present invention provides a method for controlling a heat recovery ventilation system having an outdoor air cooling function. According to the outdoor air cooling function, a heat exchange mode and an outdoor cooling mode are selectively operated. In the heat exchange mode, air introduced into a room and air discharged to the outside are heat exchanged by a heat-exchange section and then the introduced air is supplied to the room. In the outdoor air cooling mode, outdoor air bypasses the heat exchange section via an outdoor air cooling path in the case that heat exchange is not necessary, so that the air is directly introduced into the room. According to the present invention, the method for controlling a heat recovery ventilation system having an outdoor air cooling function and a ventilation device have the effects as follows. First, it is possible to save energy by selectively operating the ventilation system only when room air pollution is generated according to information on the level of room air pollution, or when direct outdoor introduction is favorable in terms of energy and the environment. Second, the heat exchange mode or the outdoor air cooling mode may be automatically operated by determining a favorable mode in terms of saving energy according to the availability of the outdoor air cooling. Third, it is possible to save energy and maintain a pleasant environment by preventing unnecessary outdoor air cooling by reducing a range set for outdoor air cooling if the level of the room air pollution is below environmental quality standards.

IPC Classes  ?

• F24F 7/08 - Ventilation with ducting systems with forced air circulation, e.g. by fan with separate ducts for supplied and exhausted air
• F24F 11/02 - Arrangement or mounting of control or safety devices
• F24F 12/00 - Use of energy recovery systems in air conditioning, ventilation or screening

Abstract

The present invention relates to a residual water circulation-type dredging head apparatus, to a dredger comprising same, and to a dredging method using same. More particularly, the present invention relates to a residual water circulation-type dredging head apparatus which circulates the residual water sucked into the dredging head apparatus together with sludge instead of simply discharging the residual water to the outside when dredging the bottom of the river or sea, and injects the residual water into the interior of the dredging head apparatus, to thereby prevent water contamination caused by the illegal discharge of residual water to the outside. The present invention also relates to a dredger comprising the dredging head apparatus, and to a dredging method using the dredging head apparatus.

IPC Classes  ?

• E02F 3/92 - Digging elements, e.g. suction heads
• B08B 3/14 - Removing waste, e.g. labels, from cleaning liquid
• E02F 3/90 - Component parts, e.g. drives, control devices

Abstract

The present invention relates to a dredging monitoring system, and more particularly, to a dredging monitoring system which effectively collects measurement data related to dredging through a real-time monitoring system, systemically databases the collected data, and analyzes the tendency of the measurement data and the correlation between the measurement data, thereby enhancing the efficiency of dredging. The dredging monitoring system, which collects and analyzes measurement data required for a dredging operation so as to control a dredger, includes a measuring instrument that is installed in a delivery pipe so as to measure the physical characteristics of a sediment-water mixture and the flow state of the mixture on a delivery path; a data logger that collects data measured by the measuring instrument; an integrated data collector that measures a current signal output from the data logger so as to integrate the measurement data; a field monitoring server that receives the measurement data collected by the integrated data collector through CDMA (code division multiple access) communication and then stores the data in a database; and an integrated measurement managing server that receives the measurement data stored in the field monitoring server through the Internet. The dredging monitoring system can systemically and integrally manage a variety of measurement data related to dredging through a ubiquitous network. Further, since the dredging monitoring system provides a dredging operation state and a monitoring result to dredging operators in real time, it is possible to respond to an emergency occurring while the dredger is operated.

IPC Classes  ?

• H04Q 9/02 - Automatically-operated arrangements

Abstract

Provided is an apparatus for measuring and scanning density inside a dredging pipeline, the apparatus including an internal frame that is installed around a pipeline, through which dredged materials are transferred, and rotates about the pipeline by a unit angle of 90 degrees; an external frame that is connected to the internal frame through a guide rod so as to be rotated by the rotation of the internal frame, moves straightly along the guide rod in one direction, and pivots on the guide rod; a radiation source that is installed in one side of the external frame so as to irradiate radiation toward the pipeline; and a radiation detector that is disposed in the other side of the external frame so as to face the radiation source with the pipeline interposed therebetween, and detects the radiation passing through the pipeline.

IPC Classes  ?

• G01N 23/12 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by transmitting the radiation through the material and measuring the absorption the material being a flowing fluid or a flowing granular solid

Abstract

Provided is an apparatus for measuring differential pressure of a dredging transportation pipeline, the apparatus including one or more measuring units that receive fluids from two arbitrary positions of the dredging transportation pipeline and measure the differential pressure therebetween. Each of the measuring units includes: two fluid supply pipes that diverge from two positions of the dredging transportation pipeline so as to supply the fluid within the dredging transportation pipeline; two transparent pillar pipes that are connected to ends of the respective fluid supply pipes such that the head of the fluids flowing in from the fluid supply pipes can be checked with the naked eyes; a ruler that is disposed between the transparent pillar pipes such that the head indicated through the transparent pillar pipes can be read through the scale thereof; an air pressure supply pipe that is connected to the upper ends of the respective transparent pillar pipes and applies counter air pressure onto the fluids flowing into the transparent pillar pipes so as to reduce the head of the fluids such that the height of the transparent pillar pipes can be reduced; a water supply pipe that is connected to the lower ends of the respective transparent pillar pipes and supplies water to the transparent pillar pipes such that the transparent pillar pipes are saturated; an air pressure supply source that provides air pressure to the air pressure supply pipe; and a water supply source that supplies water to the water supply pipe.

IPC Classes  ?

• G01L 13/04 - Devices or apparatus for measuring differences of two or more fluid pressure values using floats or liquids as sensing elements

Abstract

In a composite web truss girder that includes an upper flange and a lower flange formed of concrete and a web having a truss structure of a diagonal member formed of steel, a T-type shear connector is used to shear-connect the diagonal member to the upper flange or the lower flange at a panel point, at which the diagonal member and the upper flange or a lower flange are combined, thereby enhancing structural performance of the panel point without using a gusset plate.

IPC Classes  ?

• E04C 3/02 - JoistsGirders, trusses, or truss-like structures, e.g. prefabricatedLintelsTransoms

Abstract

A composite web truss girder includes an upper flange, a lower flange and a web, in which the upper and lower flanges include concrete, and the web has a truss structure of a diagonal member formed of steel. In forming a connection structure of a panel point at which steel member and the upper and lower flanges are combined, diagonal members are connected with a hinge so that the diagonal members are rotatable, and combined with each other. Then, the diagonal members are buried in the upper or lower flanges, and concrete flows into the diagonal member. Thus, assemblability of the diagonal member and the upper or lower flanges in the field may be enhanced, secure connection structure may be attained, and buckling of the diagonal member may be prevented.

IPC Classes  ?

• E01D 2/00 - Bridges characterised by the cross-section of their bearing spanning structure