Abstract: Disclosed are an electrostatic precipitator system and method. The disclosed electrostatic precipitator system includes: an electrostatic precipitator; a main hopper which is disposed below the electrostatic precipitator so as to be in fluid communication with the electrostatic precipitator; a plurality of sub-hoppers disposed below the main hopper so as to be in fluid communication with the main hopper; a vertical duct disposed below each sub-hopper so as to be in fluid communication with each sub-hopper; and a water tank disposed below the vertical duct so as to be in fluid communication with the vertical duct.

Abstract: Disclosed are a method and apparatus for treating wastewater. The disclosed method for treating wastewater includes a step (S10-1) of passing wastewater through a UV reaction tank to produce first treated water; a step (S10-2) of passing the first treated water through a pH adjustment tank to produce second treated water; a step (S10-3) of passing the second treated water through a first flocculation tank to produce third treated water; a step (S10-4) of passing the third treated water through a second flocculation tank to produce fourth treated water; a step (S10-5) of passing the fourth treated water through an inorganic sedimentation tank to produce fifth treated water and sludge; a step (S10-6) of passing the fifth treated water through a biological treatment reactor to produce sixth treated water; and a step (S10-7) of passing the sixth treated water through an organic sedimentation tank to produce seventh treated water.

Abstract: The present invention relates to a prefabricated bracket assembly integrated into a prefabricated column assembly for connecting PC beams, the end portions of PC beams being placed inside the prefabricated bracket assembly that is assembled on top of the prefabricated column assembly, into which concrete is poured so as to connect the PC beams and the prefabricated bracket assembly, thereby facilitating the connection of the PC beams to a factory-made prefabricated column assembly and allowing cost reduction.

Abstract: A method of determining validity for determination on presence of a specific signal of a detector according to an embodiment of the present disclosure includes: (a) receiving a synthesized signal generated from an outside by the detector; (b) acquiring a plurality of frequency domain calculation values related to the synthesized signal; (c) determining the presence of at least one specific signal based on the plurality of frequency domain calculation values; and (d) determining the validity for the determination on the presence of the specific signal based on a frequency domain scatter plot for the plurality of frequency domain calculation values.

Abstract: The present invention relates to a prefabricated bracket assembly integrated into a prefabricated column assembly for connecting PC beams, the end portions of PC beams being placed inside the prefabricated bracket assembly that is assembled on top of the prefabricated column assembly, into which concrete is poured so as to connect the PC beams and the prefabricated bracket assembly, thereby facilitating the connection of the PC beams to a factory-made prefabricated column assembly and allowing cost reduction.

Abstract: A jig device for laser welding of the disclosure includes a jig body having a semi-oval shaped seating groove in which a lower side of a refrigerant pipe to which a charging port is coupled is seated; a first pressing block provided in an upper portion of one side of the jig body and having a first groove part configured to press an upper portion of one side of the refrigerant pipe and an upper portion of one side of a fixing part of the charging port at a lower surface thereof; and a second pressing block provided at an upper portion of the other side of the jig body and having a second groove part configured to press an upper portion of the other side of the refrigerant pipe and an upper portion of the other side of the fixing part of the charging port at a lower surface thereof.

Abstract: Disclosed are a method of processing digitalized drawing and a compute program. One aspect of the present invention provides a method of processing digitalized drawing data by a computer, the method including: providing digitalized drawing having a line ID (S10); splitting the line ID into a plurality of topologies, which are smallest units that are mutually exclusive and do not overlap each other (S20); generating a pipe system network (PSN) by recombining the plurality of topologies, wherein the plurality of topologies are recombined such that a start point and an end point of the PSN are each independently Equipment, Branch or Header (S30); and generating a path item (PI) by arranging internal objects on the digitalized drawing existing between the start point and the end point of the pipe system network (PSN) and adding necessary information usable in a subsequent process (S40).

Abstract: Disclosed are a three-dimensional (3D) simulation method and a 3D simulation apparatus. The 3D simulation method disclosed herein includes a step (S20) of separating point cloud data including a road, an obstacle, and a cargo transportation route into road data and obstacle data, a step (S40) of converting the road data into road mesh data, and converting the obstacle data into obstacle mesh data, a step (S60) of constructing a virtual environment by merging the road mesh data with the obstacle mesh data, a step (S80) of loading a specific cargo transportation route to the virtual environment, a step (S100) of loading a 3D transport truck and a 3D cargo to a predetermined point of the cargo transportation route, and a step (S120) of performing a route survey simulation while virtually driving the 3D transport truck and the 3D cargo along the cargo transportation route.

Abstract: The method for treating wastewater includes a first flocculation-and-sedimentation process and a second flocculation-and-sedimentation process, wherein the first flocculation-and-sedimentation process include: passing wastewater through a first flocculation reaction tank; passing the first treated water through a third flocculation reaction tank; passing the third treated water through a fourth flocculation reaction tank; and passing the fourth treated water through a first sedimentation tank to generate fifth treated water and sludge, and the second flocculation-and-sedimentation process include: passing the fifth treated water through a fifth flocculation reaction tank to generate sixth treated water; passing the sixth treated water through a sixth flocculation reaction tank to generate sixth treated water; passing the sixth treated water through a seventh flocculation reaction tank to generate eighth treated water; and passing the eighth treated water through a second sedimentation tank to generate ninth t

Abstract: Disclosed are an electrostatic precipitator system and method. The disclosed electrostatic precipitator system includes: an electrostatic precipitator; a main hopper which is disposed below the electrostatic precipitator so as to be in fluid communication with the electrostatic precipitator; a plurality of sub-hoppers disposed below the main hopper so as to be in fluid communication with the main hopper; a vertical duct disposed below each sub-hopper so as to be in fluid communication with each sub-hopper; and a water tank disposed below the vertical duct so as to be in fluid communication with the vertical duct.

Abstract: A waste heat recovery system and method are disclosed. The waste heat recovery system disclosed herein comprises: a waste heat recovery boiler; a waste heat supply member configured to supply waste heat to the waste heat recovery boiler; and a water tank configured to fluidly communicate with the waste heat supply member.

Abstract: Disclosed are a load dispersion-type indoor lifting apparatus for a prefabricated steel structure, and a method of installing a prefabricated steel structure by using the same. The load dispersion-type indoor lifting apparatus for a prefabricated steel structure disclosed herein includes a moving cart, a support frame configured to be mounted on the moving cart, a lifting frame configured to be mounted on the support frame, and a plurality of stacker systems configured to lift up the lifting frame while pushing the support frame down.

Abstract: A dash cam having an anti-theft function includes an image acquisition unit configured to capture an image, a housing, in which the image acquisition unit is built in, mounted inside a vehicle so that the image acquisition unit images a space including at least a portion of a part constituting the vehicle, an image storage unit configured to store a first image and a second image captured by the image acquisition unit, an image analysis unit configured to compare the first image with the second image and determine whether the vehicle in which the housing is mounted has been changed, and a theft signal output unit configured to output a preset theft occurrence signal based on a determination that the vehicle has been changed by the image analysis unit.

Abstract: A waste heat recovery system and method are disclosed. The waste heat recovery system disclosed herein comprises: a waste heat recovery boiler; a waste heat supply member configured to supply waste heat to the waste heat recovery boiler; and a water tank configured to fluidly communicate with the waste heat supply member.

Abstract: According to a preferred embodiment of the present disclosure, a project management device includes: a division unit configured to divide a project into n construction work packages (CWPs) based on a construction type constituting the project, a minimum unit area for managing the project, and design information; and a display unit configured to classify the n CWPs according to construction statuses and work front statuses and display the n CWPs in a grid form.

Abstract: The present invention relates to a tool that can supply liquid pet foods little by little, comprising: a sphere, a container that rotatably supports the sphere and houses a fluid pet food, and a cover that covers the container and has an opening that exposes the sphere in the container to the outside. The pet food adhered to the surface of the sphere is exposed from the opening as the sphere rotates.

Abstract: The present invention relates to a 3D printer for construction for printing and forming various structures, in which a spray pipe follows a nozzle for discharging concrete or mortar, and sprays a liquid material onto the surface of a printed object, thereby enabling the liquid material to be applied on the surface of the printed object. Through the present invention, the printing of the printed object and the spraying of the liquid material onto the surface of the printed object may be carried out simultaneously by means of the 3D printer for construction, and thus a rapid and uniform coating treatment of the printed object is possible, and an adequate wet state of the tissue of the printed object may be maintained.

Abstract: The present disclosure relates to a 3D printer for construction for printing and forming various structures, in which agitating blades 45 capable of auto-rotation are mounted inside a nozzle 10 discharging a printing material such as concrete or mortar, to thereby enable agitation of a fluid printing material inside the nozzle 10. According to the present disclosure, agitation of the fluid printing material inside the nozzle 10 of the 3D printer for construction may be facilitated to prevent material segregation and maintain a homogeneously mixed state of materials constituting the fluid printing material.

Abstract: Disclosed are a load dispersion-type indoor lifting apparatus for a prefabricated steel structure, and a method of installing a prefabricated steel structure by using the same. The load dispersion-type indoor lifting apparatus for a prefabricated steel structure disclosed herein includes a moving cart, a support frame configured to be mounted on the moving cart, a lifting frame configured to be mounted on the support frame, and a plurality of stacker systems configured to lift up the lifting frame while pushing the support frame down.

Abstract: The present invention relates to a 3D printer for construction for printing and forming various structures wherein a roller 50 follows a nozzle 10 which discharges concrete, mortar, or the like, to bring an outer peripheral surface of the roller 50 to be in close contact with a surface of the printed object, and thus the surface of the printed object is flattened. According to the present invention, a high-degree surface flattening work can be performed on the surface of a printed object simultaneously as the printed object is printed by a 3D printer for construction, thus enabling rapid and reliable flattening of the printed object and smooth surface forming.