System and Method for Treating Water Used in Wet Cutting Operations

Abstract

The present invention relates to a water treatment system and a method thereof for effectively treating water generated during wet cutting operations. More specifically, the invention relates to a water treatment system and a method thereof that prevents contamination of the working environment and enables the reuse of water by placing a water receiving unit below the working area of ​​a structure where wet cutting is performed to receive water generated during the cutting operation, and by transporting the received water, filtering and removing sludge, and then resupplying it to a wet cutting device.

Description

Technology Field

[0001] The present invention relates to a water treatment system and a method thereof for effectively treating water generated during wet cutting operations. More specifically, the invention relates to a water treatment system and a method thereof that prevents contamination of the working environment and enables the reuse of water by placing a water receiving unit below the working area of ​​a structure where wet cutting is performed to receive water generated during the cutting operation, and by transporting the received water, filtering and removing sludge, and then resupplying it to a wet cutting device. Background Technology

[0003] Generally, wet cutting devices such as core drills and cutters are used in repair, reinforcement, or demolition work on concrete structures, bridges, piers, buildings, etc. While such wet cutting operations have the advantage of suppressing dust scattering during the cutting process and cooling the cutting area, a large amount of water is generated during the cutting process, and there is a problem that the water contains solid materials such as concrete powder and sludge.

[0004] Water generated during wet cutting operations poses a risk of contaminating the surrounding environment by falling below the work area or causing secondary contamination by leaking out through drains. In particular, at sites with restricted working environments, such as under bridges, areas adjacent to rivers, and over roads, it is difficult to effectively control the diffusion of water; consequently, there is a high likelihood of reduced safety at the work site and environmental complaints.

[0005] To solve these problems, conventional methods have involved installing housings or sealed structures around the cutting area to recover wastewater, or installing tarpaulins or waterproof sheets on the floor to prevent the diffusion of wastewater. However, the method of installing housings or sealed structures is complex, requires significant time and cost for installation and dismantling, and has limitations in application depending on the shape or location of the structure being worked on. Furthermore, the method of simply installing tarpaulins on the floor makes it difficult to systematically collect wastewater, and sludge remains dispersed throughout the tarpaulin, making disposal and cleaning after the work is completed cumbersome.

[0006] Meanwhile, some attempts have been made to filter and reuse wastewater generated during wet cutting operations; however, these technologies generally rely on fixed facilities or require separate piping and pump systems, which limits their structural complexity for application at temporary work sites. In particular, at sites where work locations change frequently, there is a need for technology that is easy to install and dismantle while efficiently collecting, filtering, and recirculating wastewater.

[0007] Therefore, there is an increasing need for a temporary water treatment technology that can effectively accommodate water generated below the working area of ​​a structure where wet cutting operations are performed, easily recover and filter the water containing sludge for resupply, and flexibly install and dismantle it according to the working environment. Prior art literature

[0009] Registered Patent Publication No. 10-2093890 (Registered on March 20, 2020) The problem to be solved

[0010] The present invention was developed to improve upon the aforementioned problems, and the objective of the present invention is to provide a system for treating used water in wet cutting operations and a method thereof, which prevents contamination of the working environment and enables the reuse of used water by placing a water receiving unit below the working area of ​​a structure where wet cutting is performed to receive the used water generated during the cutting operation, and by transporting the received used water, filtering and removing sludge, and then resupplying it to a wet cutting device. means of solving the problem

[0012] The present invention is characterized by comprising: a water receiving unit (100) disposed below a work area of ​​a structure (1) where wet cutting is performed, for receiving water generated in the work area; a transfer unit (200) for transferring the water received in the water receiving unit (100) to a processing unit; and a water processing unit (300) configured to remove solid matter contained in the water delivered through the transfer unit (200) and to resupply the water from which solid matter has been removed to a wet cutting device.

[0013] At this time, the above-mentioned water receiving portion (100) is characterized by being formed of a flexible sheet-type waterproof sheet (110) arranged so as to form a receiving space (111) for receiving water at the bottom of the work area.

[0014] In addition, the portion of the above-mentioned tarpaulin (110) that contacts the structure (1) among the edge regions can be fixed by a structure fixing member (120).

[0015] In addition, the contact surface between the structure (1) and the waterproof sheet (110) is characterized by having a sealing part (121) arranged to fill the gap.

[0016] And, the remaining edge area of ​​the above waterproof sheet (110) that is not fixed to the structure fixing member (120) can be fixed by the receiving fixing member (130) so that the receiving space (111) is formed.

[0017] The above-mentioned water treatment unit (300) includes a water tank (310); and a filtration unit (320) arranged to allow water to pass through the interior of the water tank (310) and to separate the interior space of the water tank (310) into a filtration space (311) and a resupply space (312); and the above-mentioned transfer unit (200) can be configured to transfer water to the filtration space (311) and to resupply water flowing into the resupply space (312) to a wet cutting device.

[0018] At this time, the filtration space (311) is characterized by being equipped with a detachable sludge receiving part (330) that receives sludge contained in the water used and filters the water used.

[0019] Meanwhile, the method for treating water using a wet cutting water treatment system according to the present invention is characterized by comprising the steps of: forming a receiving space (111) in which water is received by placing a sheet of waterproof material in the lower part of the working area of ​​a structure (1); forming the receiving space (111) by fixing the part of the edge area of ​​the sheet that contacts the structure (1) to the structure (1) and supporting the remaining edge area excluding this part from the outside of the structure (1); collecting water falling into the receiving space (111); sucking in the water received in the receiving space (111) and transferring it to a water treatment unit (300); filtering and removing solid matter contained in the transferred water; and resupplying the water from which solid matter has been removed to a wet cutting device. Effects of the invention

[0021] According to the present invention, a water receiving unit is positioned below the working area of ​​a structure where wet cutting is performed, and the water received in the water receiving unit is transferred to a water treatment unit through a transfer unit, filtered, and then supplied back to a wet cutting device. This configuration allows the water generated during wet cutting operations to be effectively collected, treated, and reused within the work site. Accordingly, the problem of water spreading or being discharged outside the working area and contaminating the surrounding environment is suppressed, and the water containing sludge can be repeatedly utilized on-site without separate external treatment, thereby improving work efficiency.

[0022] Furthermore, the present invention configures the water receiving section as a temporary installation type structure based on a tarpaulin, and by selectively fixing the edge area of ​​the tarpaulin using a structural fixing member and a receiving fixing member, it can be flexibly applied regardless of the shape of the structure or the working environment. In addition, by forming a sealing section on the contact surface between the structure and the tarpaulin to prevent leakage and by resupplying the water filtered by the water treatment section to the wet cutting device, it is possible to manage water stably while making installation and dismantling simple. As a result, it provides the effect of simultaneously improving work safety and environmental responsiveness in various wet cutting work sites, such as under bridges, on top of roads, and in confined spaces. Brief explanation of the drawing

[0024] FIG. 1 is a configuration diagram of a treatment system for water used in wet cutting operations according to the present invention. FIG. 2 is a drawing of an example of the installation of a water receiving section applied to the present invention. FIG. 3 is a drawing of another installation embodiment of a water receiving section applied to the present invention. FIG. 4 is a drawing of an embodiment of a water treatment unit applied to the present invention. Specific details for implementing the invention

[0025] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings so that a person skilled in the art to which the present invention pertains can easily practice the present invention.

[0027] The present invention relates to a water treatment system for effectively treating water generated during a wet cutting operation, and more specifically, to a water treatment system for wet cutting operations that prevents contamination of the working environment and enables the reuse of water by placing a water receiving section (100) below the working area of ​​a structure (1) where wet cutting is performed to receive water generated during the cutting operation, and by transporting the received water, filtering and removing sludge, and then supplying it back to a wet cutting device.

[0029] The present invention includes a water receiving unit (100) positioned below the working area of ​​a structure (1) where wet cutting is performed and receiving water generated in the working area, a transfer unit (200) for transferring the water received in the water receiving unit (100) to a processing unit, and a water processing unit (300) configured to remove solid matter contained in the water transferred through the transfer unit (200) and resupply the water from which solid matter has been removed to a wet cutting device.

[0031] The water receiving section (100) is intended to collect water used in wet cutting operations and sludge containing various sediments generated during the work process. To this end, the water receiving section (100) is made of a waterproof material, is positioned in close contact with the structure (1), and is configured to be easily installed and removed depending on changes in the work area.

[0032] For example, the water receiving section (100) may include a flexible sheet-type waterproof sheet (110) arranged so as to form a receiving space (111) in which water is received at the bottom of the work area. The waterproof sheet (110) may form a receiving space (111) by fixing the portion of the edge area that contacts the structure (1) by a structure fixing member (120), and fixing the remaining edge area excluding this portion by a receiving fixing member (130).

[0033] The structure fixing member (120) can be implemented in various structures capable of fixing the tarpaulin (110) to the structure (1), such as an anchor, a clamp, or a fastener, and supports the tarpaulin (110) to maintain a state of being in close contact with the structure (1).

[0034] A sealing portion (121) may be formed on the contact surface between the structure (1) and the tarpaulin (110) to seal the fine gap between the structure (1) and the tarpaulin (110). The sealing portion (121) is configured to maintain the space between the contact surface between the structure (1) and the tarpaulin (110) in a watertight state and may be formed in various ways to ensure ease of installation and removal.

[0035] For example, the sealing portion (121) may be formed by a caulking method in which a silicone-based sealing material is applied to the contact surface between the structure (1) and the waterproof sheet (110) and the adjacent area to fill the gap. Alternatively, the sealing portion (121) may be provided by being composed of a rubber-based sealing member and placed in the space between the structure (10) and the waterproof sheet (110) or by being adhered to the waterproof sheet (110). This allows for the selection and use of an appropriate method depending on the conditions of the construction site.

[0036] The receiving fixing member (130) is configured to fix the tarpaulin (110) by supporting the edge area of ​​the tarpaulin (110) that is not fixed to the structure (1), so that a receiving space (111) is formed by the tarpaulin (110). Depending on the installation environment, it can be implemented in various structures such as wood, brick, heavy objects, or frame structures. The receiving fixing member (130) can be positioned to support the edge area of ​​the tarpaulin (110) at a location spaced apart from the structure (1), and this positioning creates a spatial clearance between the tarpaulin (110) and the structure (1) that can accommodate water. That is, the receiving fixing member (130) can perform the function of fixing the tarpaulin (110) and, by supporting the edge area of ​​the tarpaulin (110) from the outside, form the width and depth of the receiving space (111).

[0037] For example, if a step is formed at the bottom of the structure (1), a support structure can be formed by fixing a plate-shaped receiving fixing member (130) on the outer side of the step and then fixing the edge of the waterproof sheet (110) to form a receiving space (111) at the bottom of the structure (1). In addition, if the bottom of the structure (1) is a flat floor, a support structure can be formed by stacking heavy objects or installing a frame, and a receiving space (111) can be formed by fixing the edge of the waterproof sheet (110) to the support structure.

[0038] Since the water receiving section (100) can be repeatedly installed and dismantled depending on the location of the work area, it is desirable that the waterproof sheet (110) and the receiving fixing member (130) be temporarily fixed so that they can be easily detached. For example, when wood or a frame structure (1) is used as the receiving fixing member (130), the edge end of the waterproof sheet (110) can be positioned so that it protrudes to the outside of the receiving fixing member (130), and then temporarily fixed using a staple gun, band, clamp, etc. In addition, when bricks or heavy objects are stacked and used as the receiving fixing member (130), the edge of the waterproof sheet (110) can be positioned between the bricks or heavy objects so that it is temporarily fixed by its own weight.

[0039] Additionally, the waterproof sheet (110) can be positioned so that the bottom surface of the receiving space (111) slopes to one side. To elaborate, a support (3) can be placed on one side of the lower part of the water collection section, or when fixing the waterproof sheet (110), one side of the bottom surface can be fixed in a slanted state to form a slope on the bottom surface.

[0040] At this time, the suction port of the transfer unit (200) can be positioned near the lowest point where a slope is formed on the bottom surface of the receiving space (111), and accordingly, the water used contained within the receiving space (111) can be naturally concentrated and transferred in the direction of the suction port without a separate guiding structure. As a result, the transfer efficiency is improved, and the amount of water remaining within the receiving space (111) can be reduced.

[0041] Additionally, a reinforcing member (140) to reinforce the durability of the waterproof sheet (110) may be further disposed in an area of ​​the bottom surface of the receiving space (111) where water usage is concentrated or where a large amount of sludge remains. This reinforcing member (140) may be implemented as a reinforcing sheet, pad, or partially double-layered waterproof layer laminated on the bottom or top of the waterproof sheet (110), and may be selectively disposed in an area where the suction port of the conveying unit (200) is placed or in an area where friction of sludge is concentrated. Accordingly, even when wet cutting operations are performed for a long time, damage or wear of the waterproof sheet (110) is suppressed, and the durability of the water usage receiving unit (100) can be improved.

[0042] Meanwhile, at least a portion of the edge area of ​​the waterproof sheet (110) may be folded upward or arranged in a curved shape to prevent water from overflowing to the outside of the receiving space (111). For example, by folding the edge of the waterproof sheet (110) upward or by arranging it so that the edge height is relatively higher by the receiving fixing member (130), an overflow prevention lip structure may be formed along the perimeter of the receiving space (111). Accordingly, even if the amount of water flowing in temporarily increases during operation, the water may be prevented from flowing out of the receiving space (111).

[0043] In the receiving space (111) formed in this way, water used and sludge generated from wet cutting operations can fall and be collected.

[0045] The transfer unit (200) is intended to transfer the used water containing sludge contained in the used water receiving unit (100) to the used water treatment unit (300). The transfer unit (200) can be implemented as various devices capable of transporting solids and used water together, and in one embodiment, it can be implemented as a wet vacuum cleaner that sucks up solids and used water and transports them to the used water treatment unit (300). In this case, the suction port of the transfer unit (200) is positioned in contact with or close to the bottom surface of the receiving space (111) so as to efficiently suck up the used water remaining in the receiving space (111).

[0047] The water treatment unit (300) is configured to receive water containing sludge from the transfer unit (200), filter it, and then resupply it. To this end, the water treatment unit (300) includes a water tank (310) and a filtration unit (320). The water tank (310) is formed to accommodate water containing sludge inside and is connected to the transfer unit (200) via a pipe to receive water containing sludge. At this time, in order to facilitate installation and dismantling at the site, it is preferable that the discharge end of the pipe be inserted into the interior through the open upper part of the water tank (310) so that the discharge end is located on the bottom side of the water tank (310).

[0048] The filtration unit (320) is configured to filter out sludge contained in the water used and allow the water to pass through, and is arranged to separate the internal space of the water tank (310) into a filtration space (311) and a recirculation space (312). The filtration unit (320) can be implemented in various structures such as a plate type, a mesh type, or a frame type, and can be selected considering filtration performance or ease of maintenance. In addition, the filtration unit (320) can be detachably attached to the water tank (310).

[0049] The used water delivered through the transfer unit (200) flows into the filtration space (311), and the sludge contained in the used water is separated or collected in the filtration space (311), and the used water passes through the filtration unit (320) and flows into the resupply space (312). At this time, the used water can be moved naturally by gravity without a separate pump or control means. The used water flowing into the resupply space (312) can be resupplied to a wet cutting device and reused.

[0050] Meanwhile, the filtration space (311) may be further provided with a sludge receiving section (330) to easily separate and discharge the filtered sludge. The sludge receiving section (330) is configured to be detachable and is configured to allow the water to pass through while receiving the sludge contained in the water. For example, the sludge receiving section (330) can be implemented in various structures such as a bag, a sack, or a mesh, and can be easily installed in the filtration space (311) of the water tank (310). After the operation is finished or when a certain amount of sludge is received, the sludge can be easily treated by separating the sludge receiving section (330) from the filtration space (311) and discharging it. Accordingly, maintenance and cleaning of the water treatment section (300) become easier, and downtime can be minimized.

[0051] In addition, the present invention is a temporary water treatment system rather than a fixed facility, and can be quickly installed and dismantled depending on changes in the work target structure (1) or work location, so it can be flexibly applied to various wet cutting work sites.

[0053] As described above, the method for treating water used in wet cutting according to the present invention may begin with the step of installing a sheet of waterproof material in the lower part of the working area of ​​a structure (1) where wet cutting is performed, and arranging the sheet of waterproof material in the lower part of the working area of ​​a structure (1) where wet cutting is performed so that water used can be received. At this time, the sheet is arranged to have a sufficient surface area and clearance so as to sufficiently receive water used and sludge generated during the wet cutting operation.

[0054] Subsequently, the portion of the edge area of ​​the sheet that contacts the structure (1) is fixed to the structure (1), and the remaining edge area not fixed to the structure (1) is supported from the outside of the structure (1), thereby allowing the sheet to be stably positioned at the bottom of the structure (1). This fixing and supporting process may be performed temporarily using anchors, clamps, heavy objects, frame structures, etc., depending on the conditions of the work site.

[0055] As the wet cutting operation proceeds, the wastewater and sludge generated in the work area of ​​the structure (1) fall onto the upper part of the sheet and are received by the sheet. The transfer unit (200) sucks in the wastewater and sludge received on the sheet and transfers them to the wastewater treatment unit (300), and the suction port is positioned to contact or close to the bottom surface of the sheet so as to efficiently suck in the wastewater.

[0056] The used water transferred to the used water treatment unit (300) can be reused by supplying it to a wet cutting device after solid matter is removed through a filtration process.

[0058] Meanwhile, the present specification and drawings disclose preferred embodiments of the present invention. Although specific terms have been used, they are used merely in a general sense to facilitate the explanation of the technical content of the present invention and to aid in understanding the invention, and are not intended to limit the scope of the present invention. It is obvious to those skilled in the art that, in addition to the embodiments disclosed herein, other variations based on the technical concept of the present invention are possible. Explanation of the symbols

[0060] 1 : Structure 2 : Wet cutting device 100 : Water receiving section 110 : Waterproof sheet 120: Structural fixing member 121: Sealing part 130 : Receiving fixing member 140 : Reinforcement part 200 : Transfer section 300 : Wastewater Treatment Unit 310 : Water Tank 311: Filtration space 312: Resupply space 320 : Filter section 330 : Sludge receiving section

Claims

Claim 1 A water receiving unit (100) positioned below the working area of ​​a structure where wet cutting is performed to receive water generated during the cutting operation; a transfer unit (200) for transferring the water received in the water receiving unit (100); and a water treatment unit (300) for removing sludge from the water transferred through the transfer unit (200). A water supply unit (400) that supplies the water treated in the water treatment unit (300) to a wet cutting device (20) used for wet cutting; wherein the water receiving unit (100) includes a flexible sheet-type waterproof sheet (110) arranged so as to form a receiving space (S) for receiving water at the bottom of a work area, wherein the portion of the edge area of ​​the waterproof sheet (110) that contacts the structure (1) is fixed to the structure (1) by a structure fixing member (120) so as to maintain a state of close contact with the structure (1), and the remaining edge area of ​​the waterproof sheet (110) that is not fixed to the structure fixing member (120) is fixed by a receiving fixing member (130) so as to form the receiving space (S), and wherein the receiving fixing member (130) supports the edge area of ​​the waterproof sheet (110) to form the width and depth of the receiving space (S). Claim 2 delete Claim 3 delete Claim 4 A wet cutting water treatment system according to claim 1, characterized in that a sealing part (121) is disposed on the contact surface between the structure (1) and the waterproof sheet (110) to fill the gap. Claim 5 delete Claim 6 A wet cutting water treatment system according to claim 1, wherein the water treatment unit (300) comprises: a water tank (310); and a filtration unit (320) arranged to allow water to pass through the interior of the water tank (310) and to separate the interior space of the water tank (310) into a filtration space (311) and a resupply space (312); wherein the transfer unit (200) delivers water to the filtration space (311), and the water flowing into the resupply space (312) is configured to be resupplied to a wet cutting device. Claim 7 A wet cutting water treatment system according to claim 6, characterized in that the filtration space (311) is provided with a removable sludge receiving part (330) that receives sludge contained in the water and filters the water. Claim 8 A method for treating wastewater using a wet cutting wastewater treatment system selected from any one of claims 1, 4, 6 and 7, comprising: a step of forming a receiving space (111) in which wastewater is received by placing a sheet of waterproof material below the working area of ​​a structure (1); a step of forming the receiving space (111) by fixing the portion of the edge area of ​​the sheet that contacts the structure (1) to the structure (1) and supporting the remaining edge area excluding this portion from the outside of the structure (1); a step of collecting wastewater falling into the receiving space (111); a step of sucking the wastewater received in the receiving space (111) and transferring it to a wastewater treatment unit (300); a step of filtering and removing solid matter contained in the transferred wastewater; and a step of resupplying the wastewater from which solid matter has been removed to a wet cutting device.

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