A water-rich foundation pit dewatering reuse system

Abstract

This application relates to the field of water treatment technology for water-rich foundation pits, and particularly to a water-rich foundation pit dewatering and reuse system. The system includes at least one dewatering well located around the water-rich foundation pit; the suction end of a variable frequency water pump extends into the dewatering well, and the outlet end is sequentially connected to a sedimentation tank, a collection tank, a water purification system, a clean water tank, and water-using equipment; it also includes a water level gauge installed in the dewatering well, a flow meter installed at the outlet end of the variable frequency water pump, and a controller electrically connected to the water level gauge, the flow meter, and the variable frequency water pump. The dewatering wells in the foundation pit monitor the water level and flow rate in real time through the water level gauge and flow meter, enabling the system to autonomously, quickly, and effectively lower the water level in the foundation pit, ensuring its stability. The dewatering water is then collected through a drainage network system and treated by a water purification system for use in dust suppression, landscaping, washing, and maintenance at the construction site, achieving water resource recovery and reuse.

Description

Technical Field

[0001] This application relates to the field of water treatment technology for water-rich foundation pits, and in particular to a water-rich foundation pit dewatering reuse system. Background Technology

[0002] Dewatering is a crucial part of foundation pit excavation, especially for pumping station projects. These foundation pits are often located near rivers with abundant groundwater and high water levels, requiring large volumes of water for dewatering. Traditional dewatering methods require manual monitoring and regular drainage, which often result in long construction periods, cumbersome manual operations, and difficulty in guaranteeing dewatering effectiveness. Furthermore, the dewatering water is discharged into the natural environment, leading to a waste of water resources. Utility Model Content

[0003] The purpose of this application is to provide a water-rich foundation pit dewatering reuse system that can monitor water level and flow rate in real time and collect, process, and reuse the dewatering.

[0004] The water-rich foundation pit dewatering reuse system provided in this application includes at least one dewatering well installed around the water-rich foundation pit; The suction end of the variable frequency water pump extends into the dewatering well, and the discharge end is connected in sequence to the sedimentation tank, the water collection tank, the water purification system, the water purification tank, and the water-using equipment. It also includes a water level gauge installed in the dewatering well, a flow meter installed at the outlet of the variable frequency water pump, and a controller electrically connected to the water level gauge, the flow meter, and the variable frequency water pump, respectively.

[0005] In a preferred embodiment, the water level gauge is a wireless water level gauge, which can measure the water level in the dewatering well and send the detection result to the controller; When the water level detected by the wireless water level gauge is lower than a preset threshold, the controller shuts down the variable frequency water pump.

[0006] In a preferred embodiment, the water purification system includes a sand filter, an activated carbon filter, a softening filter, and a security filter connected in series.

[0007] In a preferred embodiment, an ultraviolet sterilization device is also included.

[0008] In a preferred embodiment, the water-using equipment includes parallel-connected maintenance water-using equipment, dust suppression water-using equipment, greening water-using equipment, and concrete cooling circulating water-using equipment.

[0009] In a preferred embodiment, control valves are respectively installed on the pipelines of the maintenance water equipment, the dust suppression water equipment, the greening water equipment, and the concrete cooling circulating water equipment.

[0010] In a preferred embodiment, the concrete cooling circulating water equipment includes a water inlet pipe and a four-way reversing ball valve connected in sequence; The other three ports of the four-way reversing ball valve are respectively connected to the inlet water tank, the return water tank, and the drain pipe; one end of several parallel cooling water pipes is connected to the inlet water tank, and the other end is connected to the return water tank; When the four-way reversing ball valve is in the first position, the water inlet pipe is connected to the water inlet chamber, and the water return chamber is connected to the drain pipe.

[0011] In a preferred embodiment, a first manual butterfly valve, an inlet water temperature sensor, an electric ball valve, and a pressure sensor are sequentially connected to the water inlet pipe. A return water temperature sensor is installed on the drain pipe.

[0012] In a preferred embodiment, the inlet water tank is connected to multiple cooling water pipes via a cooling water temperature and flow rate measuring and control device and a sub-tank head.

[0013] In a preferred embodiment, a second manual butterfly valve is provided on the inlet water tank, and a third manual butterfly valve is provided on the return water tank.

[0014] Compared with the prior art, this application has the following beneficial effects: The dewatering wells in the foundation pit monitor the water level and flow rate in real time through water level gauges and flow meters. They can autonomously and quickly and effectively reduce the water level in the foundation pit to ensure its stability. The rainwater is then collected through a drainage pipe network system and treated by a water purification system for use in dust suppression, greening, washing, and maintenance at the construction site, thus realizing the recycling and reuse of water resources. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 A schematic diagram of a water-rich foundation pit dewatering and reuse system provided in an embodiment of this application; Figure 2 This is an overall schematic diagram of the concrete cooling circulating water equipment provided in the embodiments of this application; Figure label: 1-Drainage well; 2-Water level gauge; 3-Variable frequency water pump; 4-Flow meter; 5-Sedimentation tank; 6-Water collection tank; 7-Water purification system; 8-Sewage treatment equipment; 9-Clean water tank; 10-Maintenance water equipment; 11-Dust suppression water equipment; 12-Greening water equipment; 13-Concrete cooling circulating water equipment; 1301-Water inlet pipe; 1302-Four-way reversing ball valve; 1303-Inlet water tank; 1304-Return water tank; 1305-Drain pipe; 1306-Cooling water temperature and flow rate monitoring and control device; 1307-Sub-tank head; 1308-Cooling water pipe; 1309-First manual butterfly valve; 1310-Inlet water temperature sensor; 1311-Electric ball valve; 1312-Pressure sensor; 1313-Return water temperature sensor; 1314-Second manual butterfly valve; 1315-Manual ball valve; 1316-Third manual butterfly valve; 14-Pouring surface; 15-Drainage well. Detailed Implementation

[0017] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein, but rather, changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted. The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent after understanding the disclosure of this application. Throughout this specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. Conversely, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between. As used herein, the term "and / or" includes any one of the relevant items listed and any combination of any two or more of them. Although terms such as "first," "second," and "third" may be used herein to describe individual components, assemblies, regions, layers, or portions, these components, assemblies, regions, layers, or portions are not limited by these terms. More precisely, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as such in the examples may also be referred to as the second component, assembly, region, layer, or part. For ease of description, spatial relational terms such as “above,” “upper,” “below,” and “lower” may be used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relational terms are intended to include not only the orientation depicted in the drawings but also the different orientations of the device in use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element.Therefore, the term "above" includes both "above" and "below" depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly. The terminology used herein is for describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "comprising," "including," and "having" enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. Variations in the shapes shown in the figures may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the figures but include changes in shape that occur during manufacturing. The features of the examples described herein may be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible as will be apparent upon understanding the disclosure of this application.

[0018] like Figure 1 As shown, this application provides a water-rich foundation pit dewatering reuse system, including at least one dewatering well 1 set around the water-rich foundation pit; The suction end of the variable frequency water pump 3 extends into the dewatering well 1, and the discharge end is connected in sequence to the sedimentation tank 5, the water collection tank 6, the water purification system 7, the clean water tank 6, and the water-using equipment. It also includes a water level gauge 2 installed in the dewatering well 1, a flow meter 4 installed at the outlet of the variable frequency water pump 3, and a controller that is electrically connected to the water level gauge 2, the flow meter 4, and the variable frequency water pump 3 respectively.

[0019] The water level gauge is a wireless water level gauge, which can measure the water level in the dewatering well 1 and send the detection result to the controller; When the water level detected by the wireless water level gauge is lower than the preset threshold, the controller shuts down the variable frequency water pump 3; when the water level detected by the wireless water level gauge is higher than the preset threshold, the variable frequency water pump 3 continues to work continuously.

[0020] The flow meter 4 can monitor the flow rate of the variable frequency water pump 3 in real time. Combined with the water level value detected by the wireless water level meter, the power of the variable frequency water pump 3 can be reasonably controlled so that it can work continuously with low power consumption, thereby effectively reducing costs.

[0021] The water purification system 7 includes a sand filter, an activated carbon filter, a softening filter, a security filter, and an ultraviolet sterilization device connected in series.

[0022] Specifically, the sand filter is filled with 1-4mm coarse quartz sand and 1-2mm or 0.5-1mm fine quartz sand in sequence. By passing the raw water through the coarse quartz sand layer and the fine quartz sand layer, the turbidity in the water can be effectively removed.

[0023] The activated carbon filter is filled with 10-20 mesh activated carbon particles. The activated carbon particles have a well-developed microporous structure and a huge specific surface area, so they can completely adsorb residual chlorine and some organic matter in the water, and also have a good removal effect on color and odor.

[0024] Softening filters are mainly used to remove calcium and magnesium ions that are prone to scaling in water, preventing chemical scaling from damaging the membrane element, especially on the water intake side of the last membrane element in the reverse osmosis pressure vessel.

[0025] Security filters prevent fine particles generated by the hydraulic friction of pretreatment equipment during long-term operation and backwashing, as well as impurities that the pretreatment equipment failed to remove, from entering the product water tank.

[0026] Ultraviolet (UV) sterilization devices possess a powerful destructive effect on the deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) of bacteria and viruses, rendering them unable to survive and reproduce, thus eliminating them and achieving disinfection and sterilization. UV radiation can cause nucleic acid mutations, inhibit replication, block transcription, and inhibit protein synthesis; furthermore, it generates free radicals that can cause photoionization, leading to cell death.

[0027] The water purification system 7 is also connected to the sewage treatment equipment 8. The sewage separated from the water purification system 7 is sent to the sewage treatment equipment 8 for collection and centralized treatment.

[0028] The water-using equipment includes parallel maintenance water equipment 10, dust suppression water equipment 11, greening water equipment 12, and concrete cooling circulating water equipment 13, each controlled by an independent valve. The purified rainwater can be used by other water-using units in the project, thereby achieving the recycling of water resources.

[0029] Figure 2 This is a schematic diagram of the overall concrete cooling circulating water equipment provided in the embodiments of this application. The concrete cooling circulating water equipment 113 includes a water inlet pipe 1301 and a four-way reversing ball valve 1302 connected in sequence; The other three ports of the four-way reversing ball valve 1302 are respectively connected to the inlet water tank 1303, the return water tank 1304 and the drain pipe 1305; one end of several parallel cooling water pipes 1308 is connected to the inlet water tank 1303 and the other end is connected to the return water tank 1304. Cooling water pipe 1308 is coiled inside the pouring surface 14 of the large-volume concrete to cool the interior of the large-volume concrete. Drainage pipe 1305 is connected to drainage well 15 to drain excess water into drainage well 15.

[0030] In the process of using cooling water pipes to control the temperature of large-volume concrete, it is necessary to frequently change the direction of the cooling water flow in order to improve cooling efficiency. Currently, in many cases, the flow is changed manually, which is not only complicated to operate and inefficient, but also cannot guarantee the timeliness and accuracy of the flow change. Therefore, it is essential to add valves that can automatically change the flow in the water pipes.

[0031] The 1302 four-way reversing ball valve is an automatic reversing four-way valve that can control the valve motor to reverse via a voltage signal.

[0032] When the four-way reversing ball valve 1302 is in the first position, the water inlet pipe 1301 is connected to the water inlet cartridge 1303, and the water return cartridge 1304 is connected to the drain pipe 1305.

[0033] When the four-way reversing ball valve 1302 is in the second position after reversing, the water inlet pipe 1301 is connected to the return water tank 1304, and the water inlet tank 1303 is connected to the drain pipe 1305.

[0034] A first manual butterfly valve 1309, an inlet water temperature sensor 1310, an electric ball valve 1311, and a pressure sensor 1312 are sequentially connected to the water inlet pipe 1301. A return water temperature sensor 1313 is installed on the drain pipe 1305.

[0035] The inlet water tank 1303 is connected to multiple cooling water pipes 1308 through the cooling water temperature and flow measurement and control device 1306 and the sub-tank head 1307.

[0036] The cooling water temperature and flow rate measurement and control device 1306 is a key piece of equipment for measuring and controlling the cooling water flow rate in the intelligent water supply and temperature control system for large-volume concrete. It consists of a thermometer, a flow meter, and an electrically controlled ball valve. It can measure the temperature and flow rate of the cooling water and control the cooling water flow rate according to the instructions of the host computer.

[0037] A second manual butterfly valve 1314 is installed on the inlet water tank 1303, and a third manual butterfly valve 1316 is installed on the return water tank 1304, which can independently control the water volume in the inlet water tank 1303 and the return water tank 1304.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A system for reusing dewatering from water-rich foundation pits, characterized in that, This includes at least one dewatering well located around a water-rich foundation pit; The suction end of the variable frequency water pump extends into the dewatering well, and the discharge end is connected in sequence to the sedimentation tank, the water collection tank, the water purification system, the water purification tank, and the water-using equipment. It also includes a water level gauge installed in the dewatering well, a flow meter installed at the outlet of the variable frequency water pump, and a controller electrically connected to the water level gauge, the flow meter, and the variable frequency water pump, respectively.

2. The water-rich foundation pit dewatering and reuse system according to claim 1, characterized in that, The water level gauge is a wireless water level gauge, capable of measuring the water level in the dewatering well and sending the detection result to the controller; When the water level detected by the wireless water level gauge is lower than a preset threshold, the controller shuts down the variable frequency water pump.

3. The water-rich foundation pit dewatering and reuse system according to claim 1, characterized in that, The water purification system includes a sand filter, an activated carbon filter, a softening filter, and a security filter connected in series.

4. The water-rich foundation pit dewatering and reuse system according to claim 3, characterized in that, It also includes an ultraviolet sterilization device.

5. The water-rich foundation pit dewatering and reuse system according to claim 1, characterized in that, The water-using equipment includes parallel-connected maintenance water equipment, dust suppression water equipment, greening water equipment, and concrete cooling circulating water equipment.

6. The water-rich foundation pit dewatering reuse system according to claim 5, characterized in that, Control valves are respectively installed on the pipelines of the maintenance water equipment, the dust suppression water equipment, the greening water equipment, and the concrete cooling circulating water equipment.

7. The water-rich foundation pit dewatering reuse system according to claim 5, characterized in that, The concrete cooling circulating water equipment includes a water inlet pipe and a four-way reversing ball valve connected in sequence. The other three ports of the four-way reversing ball valve are respectively connected to the inlet water tank, the return water tank, and the drain pipe; one end of several parallel cooling water pipes is connected to the inlet water tank, and the other end is connected to the return water tank; When the four-way reversing ball valve is in the first position, the water inlet pipe is connected to the water inlet chamber, and the water return chamber is connected to the drain pipe.

8. The water-rich foundation pit dewatering reuse system according to claim 7, characterized in that, A first manual butterfly valve, an inlet water temperature sensor, an electric ball valve, and a pressure sensor are sequentially connected to the water inlet pipe. A return water temperature sensor is installed on the drain pipe.

9. The water-rich foundation pit dewatering reuse system according to claim 7, characterized in that, The inlet water tank is connected to multiple cooling water pipes via a cooling water temperature and flow measurement and control device and a sub-tank head.

10. The water-rich foundation pit dewatering reuse system according to claim 7, characterized in that, A second manual butterfly valve is installed on the inlet water tank, and a third manual butterfly valve is installed on the return water tank.

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