Construction site water recycling system

Abstract

The invention relates to the technical field of building construction, and discloses a construction site water recycling system which comprises a control module, a water well, a sedimentation tank, a water tank, an increasing pump and a spraying pipe. The sedimentation tank at least comprises a first purification tank and a second purification tank, a filtering wall is arranged on the top side of a wall between the two tanks, and a drainage pipe is assembled on the bottom side of the second purification tank; the well is communicated with the first purifying pond through a first pipeline; a first submersible pump at one end of the first pipeline is arranged in the well; the second purifying pond is connected with the water tank through a second pipeline, a second submersible pump at one end of the second pipeline is arranged in the second purifying pond, and a first gate valve, a water meter and a filter are sequentially arranged on the pipeline; the booster pump is connected with the water tank through a third pipeline with a second gate valve and connected with the spraying pipe through a fourth pipeline with a third gate valve. And the control module is electrically connected with the water meter and each gate valve, so that full-flow intelligent cooperative control of water source extraction, purification, transmission and distribution and spraying is realized.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and more specifically, to a water recycling system for construction sites. Background Technology

[0002] Construction requires water resources, especially building construction, which consumes a large amount of water, mainly for concrete curing, vehicle washing, road cleaning, dust control, and greening maintenance.

[0003] Currently, construction sites still face many technical bottlenecks in water resource treatment and utilization, leading to serious water waste, poor equipment operation stability, and insufficient level of intelligence, which urgently need to be solved through technological innovation.

[0004] First, existing technologies for treating construction dewatering suffer from significant inefficiencies. Traditional methods typically involve direct discharge of construction dewatering without effective recycling, resulting in substantial water waste. Statistics show that this inefficient approach leads to an annual waste of over 2 billion cubic meters of water, which is incompatible with the current severe water shortage situation. Furthermore, construction dewatering generally has excessively high sediment content, typically reaching 5%-8%. Direct discharge easily causes blockages in urban drainage networks, increasing municipal maintenance costs and potentially leading to drainage system failure. While existing filtration devices often employ a single-screen structure to address sediment content, their particle retention rate is less than 60%, resulting in limited filtration effectiveness and failing to meet the water quality requirements for subsequent water reuse.

[0005] Secondly, the sprinkler systems commonly used on construction sites have significant shortcomings in terms of water source adaptability. As a key piece of equipment for controlling construction dust, the operational stability of the sprinkler system directly affects its dust suppression effect. Currently, most sprinkler systems rely on municipal water supply as their water source, but the quality of municipal water fluctuates greatly. When the sand content exceeds the standard (>3%), the nozzle clogging rate can reach as high as 40%, causing the sprinkler system to malfunction and significantly reducing its dust suppression effect. In addition, the sprinkler design of ordinary fire hydrant boxes does not take into account the characteristics of water bodies with high sand content and lacks an effective anti-clogging structure, further increasing the probability of equipment failure and posing a great challenge to dust control on construction sites.

[0006] Finally, there is a serious lack of intelligent control technology for rainwater harvesting and irrigation systems at construction sites. Currently, over 90% of rainwater harvesting systems lack dynamic coupling with soil moisture and meteorological data, relying solely on manual experience for irrigation water control, resulting in errors exceeding 30%. Excessive water not only wastes water resources but may also affect the stability of the construction site foundation; insufficient water fails to meet the needs of greening vegetation or dust suppression. Furthermore, existing metering equipment has low accuracy; for example, mechanical water meters have an accuracy of only ±5%, making it difficult to accurately monitor water usage and providing reliable data support for intelligent control, thus hindering the refinement of water resource management at construction sites. Summary of the Invention

[0007] In view of this, this application provides a construction site water recycling system, which aims to improve the problems of serious water waste caused by direct discharge of rainwater at existing construction sites, high equipment blockage rate due to poor filtration effect of high sediment water, and lack of precise and intelligent control of water resource management.

[0008] This application provides a water recycling system for construction sites, characterized in that it includes a control module and a water well, a sedimentation tank, a water tank, a booster pump, and a spray pipe arranged sequentially along the water outlet direction;

[0009] The sedimentation tank includes at least a first purification tank and a second purification tank. The first purification tank has a filter wall on the top side of the wall near the second purification tank, and the second purification tank has a drain pipe on the bottom side. The drain pipe is used to discharge the sewage deposited at the bottom of the second purification tank.

[0010] A first pipeline is provided between the water well and the first purification pool. A first submersible pump is provided at the first end of the first pipeline. The first submersible pump is located inside the water well. The second end of the first pipeline is connected to the first purification pool.

[0011] A second pipe is provided between the second purification pool and the water tank. A second submersible pump is provided at the first end of the second pipe, and the second submersible pump is located inside the second purification pool. The second end of the second pipe is connected to the water tank. A first gate valve, a water meter, and a filter are provided on the second pipe. The booster pump is connected to the water tank through a third pipe, and a second gate valve is provided on the third pipe. The booster pump is connected to the spray pipe through a fourth pipe, and a third gate valve is provided on the fourth pipe.

[0012] The spray pipes are laid out along the construction site to provide spray water flow to the construction site;

[0013] The control module is electrically connected to the water meter, the first gate valve, the second gate valve, and the third gate valve.

[0014] Preferably, the construction site water recycling system also includes a fire-fighting pipe, which is connected to the fourth pipe.

[0015] Preferably, the second purification tank is provided with a horizontally arranged grating plate, the second submersible pump is arranged above the grating plate, and the drain pipe is located below the grating plate.

[0016] Preferably, the sidewall of the well is laid with a mesh cloth and a stone filter layer in a radial direction from the inside to the outside.

[0017] Preferably, the spray pipe is connected to the sprayer and is used to supply water to the sprayer.

[0018] Preferably, the first pipe, the second pipe, the third pipe and the fourth pipe are all made of galvanized pipe.

[0019] Compared with existing technologies, the construction site water recycling system provided in this application achieves at least the following beneficial effects:

[0020] This application employs a three-stage purification process—sedimentation in a sedimentation tank, interception by a filter wall, and deep filtration through a pipeline filter—to gradually reduce the sediment content of the water. This ensures the purified water meets the requirements of the sprinkler system, reducing reliance on municipal water supply and lowering construction water costs. Simultaneously, the three-stage purification process effectively improves effluent quality, reduces the probability of sprinkler head clogging, and ensures stable operation of the sprinkler system. At the control level, the control module receives real-time flow data from the water meter and uses electrical signals to control each valve, achieving fully automated regulation of the entire process from water extraction, multi-stage purification, water storage and buffering, to pressurized sprinkler operation. This improves water resource metering accuracy and control response speed, facilitating green and intelligent management at the construction site and avoiding errors and inefficiencies caused by manual operation.

[0021] Of course, any product implementing this application need not specifically need to achieve all of the technical effects described above at the same time.

[0022] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0024] Figure 1 The diagram shown is a structural schematic of the construction site water recycling system provided in the embodiment of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100-Water well, 110-Mesh cloth, 120-Pebble filter layer, 200-Sedimentation tank, 210-First purification tank, 220-Second purification tank, 221-Drainage pipe, 222-Grate plate, 230-Filter wall, 300-Water tank, 400-Sprinkler pipe, 410-Sprayer, 510-First pipeline, 511-First submersible pump, 520-Second pipeline, 521-First gate valve, 522-Water meter, 523-Filter, 524-Second submersible pump, 530-Third pipeline, 531-Second gate valve, 540-Fourth pipeline, 541-Third gate valve, 600-Booster pump, 700-Fire pipe. Detailed Implementation

[0027] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0028] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0029] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0030] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0031] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this application can be combined with each other without contradiction.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0033] Figure 1 The diagram shown is a structural schematic of the construction site water recycling system provided in the embodiment of this application.

[0034] Please refer to Figure 1This application provides a construction site water recycling system, including a control module and a water well 100, a sedimentation tank 200, a water tank 300, a booster pump 600 and a spray pipe 400 arranged sequentially along the water outlet direction.

[0035] The sedimentation tank 200 includes at least a first purification tank 210 and a second purification tank 220. The top side of the wall of the first purification tank 210 near the second purification tank 220 is provided with a filter wall 230, and the bottom side of the second purification tank 220 is provided with a drain pipe 221, which is used to discharge the sewage deposited at the bottom of the second purification tank 220.

[0036] A first pipe 510 is provided between the water well 100 and the first purification pool 210. A first submersible pump 511 is provided at the first end of the first pipe 510. The first submersible pump 511 is located inside the water well 100. The second end of the first pipe 510 is connected to the first purification pool 210.

[0037] A second pipe 520 is provided between the second purification pool 220 and the water tank 300. A second submersible pump 524 is provided at the first end of the second pipe 520 and is located inside the second purification pool 220. The second end of the second pipe 520 is connected to the water tank 300. A first gate valve 521, a water meter 522, and a filter 523 are provided on the second pipe 520. A booster pump 600 is connected to the water tank 300 through a third pipe 530. A second gate valve 531 is provided on the third pipe 530. A booster pump 600 is connected to the spray pipe 400 through a fourth pipe 540. A third gate valve 541 is provided on the fourth pipe 540.

[0038] Sprinkler pipes 400 are laid along the construction site to provide spray water flow to the construction site.

[0039] The control module is electrically connected to the water meter 522, the first gate valve 521, the second gate valve 531, and the third gate valve 541.

[0040] It should be understood that the water source in well 100 can be obtained and temporarily stored by collecting groundwater from the foundation pit and rainwater from the construction site, forming a recyclable construction water source. Well 100 is equipped with a water level monitoring component (such as a water level sensor, not shown in the figure). When the water level in the well reaches a preset threshold, the control module sends a start signal, triggering the first submersible pump 511 to operate. The pump then pumps the stored water in well 100 to the multi-stage sedimentation tank 200 through the first pipeline 510, providing a stable water source for subsequent purification processes.

[0041] It should be noted that the number of purification tanks in the sedimentation tank 200 can be flexibly set to two or more, and filter walls 230 are installed on the top side of the walls between adjacent purification tanks. Since the water in the next-stage purification tank is supplied by the overflow of the previous-stage purification tank, the water level in each purification tank naturally decreases sequentially along the effluent direction. This application does not strictly limit the specific number of purification tanks; the core requirement is that the effluent quality of the last-stage purification tank in the sedimentation tank 200 must meet the requirements for use as spray water at the construction site. Preferably, the effluent quality of the last-stage purification tank should meet the following indicators: pH value controlled within the neutral range of 6.5 to 8.5; sulfate and chloride content not exceeding 250 mg / L; sulfide content limited to ≤0.02 mg / L, to ensure that the water is compatible with the spray system, avoid corrosion or blockage of equipment, and ensure the stable and efficient operation of the spray system.

[0042] In one specific embodiment of this example, the number of purification tanks is two (see...). Figure 1 The following is a combination of... Figure 1 The water recycling system at the construction site shown here is described in detail, along with its working process:

[0043] (Water Source Extraction and Primary Purification) The first submersible pump 511 in the well 100 is started, and the construction dewatering water is pumped from the well 100 to the first purification tank 210 of the sedimentation tank 200 through the first pipeline 510. The water containing silt is left to stand in the first purification tank 210, and the large particles of silt settle naturally under the action of gravity, achieving primary purification. When the water level in the first purification tank 210 is higher than the top height of the adjacent wall, the water overflows into the second purification tank 220 through the filter wall 230 on the top side of the wall. The filter wall 230 intercepts the medium-sized suspended particles in the water, completing the secondary purification.

[0044] (Deep filtration and water storage) The second submersible pump 524 in the second purification tank 220 is activated, pumping the water, which has undergone two stages of purification, into the water tank 300 through the second pipe 520. During this water transfer process, the filter 523 on the second pipe 520 performs deep filtration on the water, further trapping tiny particles to achieve tertiary purification; the first gate valve 521 controls the opening and closing of the second pipe 520, and the water meter 522 measures the water flow in real time and feeds the data back to the control module. At the same time, the drain pipe 221 at the bottom of the second purification tank 220 is opened periodically to promptly discharge the sludge deposited at the bottom of the tank, ensuring the purification effect and efficiency of the second purification tank 220.

[0045] The sprinkler operation and intelligent control module monitors the water storage status of the water tank 300 in real time based on the flow data fed back by the water meter 522. When dust suppression spraying is required at the construction site, the control module sends a signal to control the second gate valve 531 and the third gate valve 541 to open synchronously. The purified water in the water tank 300 enters the booster pump 600 through the third pipe 530, and after pressurization, it is transported to the sprinkler pipes 400 laid along the construction site through the fourth pipe 540 to realize the sprinkler operation. The control module can automatically adjust the opening and closing status and opening and closing duration of the first gate valve 521, the second gate valve 531 and the third gate valve 541 according to the cumulative water delivery detected by the water meter 522, realizing the full-process system control of water source extraction, purification treatment, water storage and buffering and sprinkler operation. Among them, the booster pump 600 can effectively compensate for the pressure loss of water during long-distance transportation, ensuring that the sprinkler pipes 400 can maintain a stable and sufficient spray pressure even in the scenario of large-scale deployment at the construction site, ensuring the dust suppression effect of sprinkler spraying.

[0046] In this embodiment, a three-stage purification process—mechanical static settling in sedimentation tank 200, interception by filter walls, and deep filtration by pipeline filters—gradually reduces the sand content of the water, making the purified water suitable for the requirements of the sprinkler system, reducing dependence on municipal water supply and lowering construction water costs. Simultaneously, the three-stage purification process effectively improves effluent quality, reduces the probability of sprinkler head clogging, and ensures stable operation of the sprinkler system. At the control level, the control module receives real-time flow data from water meter 522 and performs electrical signal linkage control on each gate valve, achieving fully automated adjustment of the entire process from water extraction, multi-stage purification, water storage and buffering, and pressurized sprinkler operation. This improves the accuracy of water resource metering and the speed of control response, facilitating green and intelligent management of the construction site and avoiding errors and inefficiencies caused by manual operation.

[0047] In some embodiments, the construction site water recycling system further includes a fire pipe 700, which is connected to a fourth pipe 540.

[0048] In this embodiment, by connecting the fire-fighting pipe 700 to the fourth pipe 540, the purified water can simultaneously meet the dual needs of dust suppression spraying and fire-fighting, achieving "multi-purpose use of water." Construction sites have high demands for fire-fighting water and require rapid response. The water in this system, purified through multiple stages, has stable quality (low sand content) and can be directly transported through the fire-fighting pipe 700, avoiding the risk of blockage in the fire-fighting pipe 700 and fire hydrants due to excessive sand content in the water source, ensuring smooth water supply during emergency firefighting. Simultaneously, the water tank 300, as a water storage device, can store a certain amount of purified water to compensate for temporary water shortages and enhance the fire safety guarantee capability of the construction site.

[0049] In some embodiments, the second purification tank 220 is provided with a horizontally arranged grating plate 222, the second submersible pump 524 is disposed above the grating plate 222, and the drain pipe 221 is located below the grating plate 222.

[0050] In this embodiment, the horizontally arranged grating 222 in the second purification tank 220 can further intercept the water flowing in from the filter wall 230 of the first purification tank 210, preventing larger particulate impurities (such as silt clumps, debris, etc.) that have not been fully settled from entering the area above the grating 222. Since the second submersible pump 524 is located above the grating 222, it avoids direct contact between the submersible pump and the sewage and large particulate impurities deposited at the bottom of the tank, reducing the risk of failure of the second submersible pump 524 due to impurities entanglement and wear, extending the service life of the equipment, and reducing maintenance costs.

[0051] Furthermore, the grating plate 222 divides the second purification tank 220 into upper and lower layers. The lower layer is the main sedimentation area, and the drain pipe 221 is located below the grating plate 222, which can directly discharge the high-concentration sewage and impurities deposited at the bottom of the tank. The barrier effect of the grating plate 222 prevents a large amount of the relatively clean water in the upper layer from being carried out during drainage, ensuring more precise and efficient sewage discharge, reducing the waste of purified water, and preventing the deposited impurities from being mixed into the upper water layer again due to water flow disturbance, thus preventing secondary pollution and ensuring the stability of the water quality entering the water tank 300.

[0052] In some embodiments, the sidewall of the well 100 is provided with a mesh cloth 110 and a stone filter layer 120 in a radial direction from the inside to the outside.

[0053] In this embodiment, the mesh fabric 110 and the gravel filter layer 120 arranged radially along the sidewall of the well 100 can perform primary filtration of groundwater or construction precipitation entering the well 100 at the source. The gravel filter layer 120 uses the gaps between particles to intercept large particles of silt, sand, stones, and other impurities in the water, while the mesh fabric 110 further prevents fine particles from seeping into the well 100 through the sidewall, reducing the sand content of the water entering the well 100. This reduces the purification pressure on the subsequent sedimentation tank 200 and filter 523 from the source.

[0054] In addition, the gravel filter layer 120 not only has a filtering function, but also provides physical support for the side wall of the well 100, reducing the risk of collapse of the soil or rock in the well wall due to water flow erosion and pressure changes; the mesh cloth 110 can fix the gravel filter layer 120 to prevent it from loosening or being lost under the impact of water flow. The two work together to enhance the structural stability of the well 100 and reduce the maintenance frequency and cost of the well 100.

[0055] In some embodiments, the spray pipe 400 is connected to the sprayer 410 for supplying water to the sprayer 410.

[0056] In this embodiment, after the spray pipe 400 is connected to the sprayer 410, the purified water can be converted into a fine water mist by the sprayer 410. Compared with direct spraying from the spray pipe 400, the water mist has a wider coverage area and stronger diffusion, and can act more evenly on dusty areas of the construction site (such as material yards, work surfaces, and transportation channels), especially suitable for controlling fine dust suspended in the air. This compensates for the shortcomings of traditional spraying in reducing high-altitude dust or dust in local dead corners, further reducing the dust concentration at the construction site and improving the working environment.

[0057] In some embodiments, the first pipe 510, the second pipe 520, the third pipe 530 and the fourth pipe 540 are all made of hot-dip galvanized steel pipe.

[0058] Because the water at construction sites (especially water filtered by rainwater or sediment) may contain residual minerals or corrosive components, the zinc layer on the surface of hot-dip galvanized steel pipes forms a dense protective oxide film, effectively isolating the water from direct contact with the pipe substrate (steel), significantly improving the pipe's corrosion resistance. Compared to ordinary steel pipes, this reduces problems such as pipe perforation and leakage caused by rust, extends the pipe's service life, and reduces the frequency of system maintenance and replacement.

[0059] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A water recycling system for construction sites, characterized in that, It includes a control module and a water well, sedimentation tank, water tank, booster pump and spray pipe arranged sequentially along the water outlet direction; The sedimentation tank includes at least a first purification tank and a second purification tank. The first purification tank has a filter wall on the top side of the wall near the second purification tank, and the second purification tank has a drain pipe on the bottom side. The drain pipe is used to discharge the sewage deposited at the bottom of the second purification tank. A first pipeline is provided between the water well and the first purification pool. A first submersible pump is provided at the first end of the first pipeline. The first submersible pump is located inside the water well. The second end of the first pipeline is connected to the first purification pool. A second pipe is provided between the second purification pool and the water tank. A second submersible pump is provided at the first end of the second pipe, and the second submersible pump is located inside the second purification pool. The second end of the second pipe is connected to the water tank. A first gate valve, a water meter, and a filter are provided on the second pipe. The booster pump is connected to the water tank through a third pipe, and a second gate valve is provided on the third pipe. The booster pump is connected to the spray pipe through a fourth pipe, and a third gate valve is provided on the fourth pipe. The spray pipes are laid out along the construction site to provide spray water flow to the construction site; The control module is electrically connected to the water meter, the first gate valve, the second gate valve, and the third gate valve.

2. The construction site water recycling system as described in claim 1, characterized in that, It also includes a fire-fighting pipe, which is connected to the fourth pipe.

3. The construction site water recycling system as described in claim 1, characterized in that, The second purification tank is equipped with a horizontally arranged grating plate, the second submersible pump is installed on the grating plate, and the drain pipe is located below the grating plate.

4. The construction site water recycling system as described in claim 1, characterized in that, The sidewall of the well is laid with a mesh cloth and a stone filter layer in a radial direction from the inside to the outside.

5. The construction site water recycling system as described in claim 1, characterized in that, The spray pipe is connected to the sprayer and is used to supply water to the sprayer.

6. The construction site water recycling system as described in claim 1, characterized in that, The first pipe, the second pipe, the third pipe and the fourth pipe are all made of hot-dip galvanized steel pipe.

Images