Sewage purification device for foundation pit
By setting up multi-stage sedimentation tanks and pumping devices inside and outside the foundation pit, the problem of insufficient foundation pit space was solved, achieving efficient sewage purification and drainage, and meeting municipal requirements.
Patent Information
- Application Number
- CN202423302178.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2034-12-30
AI Technical Summary
For smaller-scale foundation pit projects, existing technologies cannot set up three- or five-stage sedimentation tanks that meet drainage requirements within a limited space, resulting in poor sedimentation effects and failure to meet municipal pipeline drainage requirements.
A first sedimentation tank is set up inside the foundation pit, a second sedimentation tank is set up on the support device on the side end face of the foundation pit, and a third sedimentation tank is set up at the top of the foundation pit. The sewage is pumped to each sedimentation tank in sequence by a pumping device for three-stage purification. The sedimentation tanks are set up in stages by utilizing vertical space to reduce the space occupied.
It improved sewage purification efficiency, reduced operating costs, and effectively utilized the internal space of the foundation pit, thus meeting municipal drainage requirements.
Smart Images
Figure CN223901290U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sewage purification technical field, concretely relates to a sewage purification device for foundation pit. BACKGROUND
[0002] At present, the main technical means for sewage purification is to carry out preliminary treatment of sewage by building three or five stage sedimentation tanks. These sedimentation tanks can effectively preliminarily precipitate and filter the suspended solids, impurities and the like in sewage through multi-stage structure design. First, sewage enters the first stage sedimentation tank, and through standing and gravity effect, larger suspended particles will gradually settle to the bottom of the tank. Subsequently, the sewage flows into the second stage sedimentation tank to further remove fine suspended solids. In the three or five stage sedimentation tank, the sewage will go through more filtration and sedimentation steps to ensure that it reaches a higher purification standard.
[0003] However, in the actual construction process, for those small-scale foundation pit projects, when the nearest distance from the outer edge of the foundation pit to the red line is less than 2 meters, there is not enough space around the foundation pit to set up a larger three or five stage sedimentation tank. At this time, the three or five stage sedimentation tank has a small area and insufficient internal volume, and the sedimentation effect is poor, which cannot meet the municipal pipeline drainage requirements. CONTENT OF THE UTILITY MODEL
[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect that the small-scale foundation pit in the prior art cannot be provided with a three or five stage sedimentation tank meeting the drainage requirements, so as to provide a sewage purification device for foundation pit.
[0005] In order to solve the above technical problems, the utility model provides a sewage purification device for foundation pit, comprising: a first sedimentation tank arranged in the foundation pit;
[0006] A support device is arranged on the side end face of the foundation pit, and at least one second sedimentation tank is arranged on the support device, and the height of the second sedimentation tank is higher than that of the first sedimentation tank;
[0007] At least one third sedimentation tank is arranged on the top of the foundation pit, and the third sedimentation tank has a drainage pipe for discharging sewage;
[0008] A water pumping device is connected with the first sedimentation tank, the second sedimentation tank and the third sedimentation tank respectively, and the water pumping device is used for pumping the water precipitated in the first sedimentation tank to the second sedimentation tank, and pumping the water precipitated in the second sedimentation tank to the third sedimentation tank.
[0009] Preferably, the support device comprises a cross beam, and the two ends of the cross beam in the length direction are arranged on the side end face of the foundation pit.
[0010] Preferably, a plurality of grooves are arranged on the cross beam, and the second sedimentation tank is arranged in the grooves.
[0011] Preferably, the second sedimentation tank comprises a first concrete layer, an isolation layer and a second concrete layer.
[0012] Preferably, the water pumping device comprises a first water pump assembly and a second water pump assembly, the water inlet of the first water pump assembly is communicated with the first sedimentation tank, the water outlet of the first water pump assembly is communicated with the second sedimentation tank through a first water pipe, the water inlet of the second water pump assembly is communicated with the second sedimentation tank, and the water outlet of the second water pump assembly is communicated with the third sedimentation tank.
[0013] Preferably, the first water pump assembly comprises a first water pump and a first water pipe, the first water pump is arranged in the first sedimentation tank, the water inlet of the first water pipe is communicated with the water outlet of the first water pump, and the water outlet of the first water pipe is arranged in the second sedimentation tank.
[0014] Preferably, the second water pump assembly comprises a second water pump and a second water pipe, the second water pump is arranged in the second sedimentation tank, the water inlet of the second water pipe is communicated with the water outlet of the second water pump, and the water outlet of the second water pipe is arranged in the second sedimentation tank.
[0015] The water inlet of the second water pump is higher than the water outlet of the first water pipe.
[0016] Preferably, a protective fence is arranged around the first sedimentation tank.
[0017] The technical scheme of the utility model has the following advantages:
[0018] 1. The sewage purification device for a foundation pit, the first sedimentation tank is arranged in the foundation pit, the second sedimentation tank is arranged at the middle part of the foundation pit, the third sedimentation tank is arranged at the top of the foundation pit, the third sedimentation tank is arranged on the ground, and the three sedimentation tanks are arranged in different levels according to the height, so that the occupied space is reduced, and the internal space of the foundation pit is used more efficiently.
[0019] 2. The sewage purification device for a foundation pit, the two ends of the cross beam in the length direction are arranged on the side end faces of the foundation pit, and the second sedimentation tank is temporarily arranged on the cross beam and used for purifying the sewage in the foundation pit.
[0020] 3. The sewage purification device for a foundation pit, the isolation layer prevents the first concrete layer and the second concrete layer from being adhered when the second sedimentation tank is disassembled later, so that the second sedimentation tank can be quickly and effectively disassembled. BRIEF DESCRIPTION OF DRAWINGS
[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in 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 utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0022] Figure 1 This is a front view of a sewage purification device for a foundation pit provided in the first embodiment of the present invention.
[0023] Figure 2 for Figure 1 A top view of the second sedimentation tank in the middle;
[0024] Figure 3 for Figure 1 A cross-sectional view of the second sedimentation tank in the process.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. First sedimentation tank; 2. Second sedimentation tank; 3. Third sedimentation tank; 4. Drainage pipe; 5. Crossbeam; 6. First concrete layer; 7. Isolation layer; 8. Second concrete layer; 9. First water pump; 10. First connecting pipe; 11. Second water pump; 12. Second connecting pipe; 13. Protective fence; 14. Foundation pit; 15. Steel mesh; 16. Tie bar. Detailed Implementation
[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0029] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "mount", "link", "connect" should be understood broadly, for example, it can be fixed connection, also can be detachable connection, or integrally connected;It can be mechanical connection, also can be electrical connection;It can be directly connected, also can be indirectly connected through intermediate medium, it can be the communication inside two elements.For ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.
[0030] In addition, the technical features involved in different embodiments of the utility model described below can be combined with each other as long as there is no conflict.
[0031] The sewage purification device for foundation pit 14 provided by the embodiment is used for small-scale foundation pit 14, and sewage treatment is carried out in the foundation pit 14.
[0032] As Figure 1 As shown in a specific embodiment of the sewage purification device for foundation pit 14 provided by the embodiment, a first sedimentation tank 1 is arranged in the foundation pit 14.A support device is arranged on the side end face of the foundation pit 14, and at least one second sedimentation tank 2 is arranged on the support device, and the height of the second sedimentation tank 2 is higher than that of the first sedimentation tank 1;At least one third sedimentation tank 3 is arranged on the top of the foundation pit 14.At this time, the sewage purification device includes the first sedimentation tank 1 in the foundation pit 14, the second sedimentation tank 2 on the support device, and the third sedimentation tank 3 on the top of the foundation pit 14.The third sedimentation tank 3 has a drain pipe 4 for discharging municipal sewage.A water pumping device is connected to the first sedimentation tank 1, the second sedimentation tank 2 and the third sedimentation tank 3 respectively, and the water pumping device is used to pump the water after sedimentation in the first sedimentation tank 1 to the second sedimentation tank 2, and pump the water after sedimentation in the second sedimentation tank 2 to the third sedimentation tank 3.The sewage is purified by using three-stage sedimentation tanks respectively.By arranging the first sedimentation tank 1 in the foundation pit 14, the second sedimentation tank 2 in the middle part of the foundation pit 14, and the third sedimentation tank 3 on the top of the foundation pit 14, the third sedimentation tank 3 is arranged on the ground, and the three sedimentation tanks are arranged in different levels according to the height, so as to reduce the occupied space and utilize the internal space of the foundation pit 14 more efficiently.
[0033] Specifically, the first-stage sedimentation tank is mainly responsible for removing suspended solids and large-particle impurities in sewage, the second-stage sedimentation tank further removes fine suspended solids, and the third-stage sedimentation tank ensures that the effluent meets the discharge standard through fine filtration.The whole purification process not only improves the treatment efficiency, but also greatly reduces the operation cost.
[0034] As Figure 1As shown, in this embodiment, the support device includes: a crossbeam 5, which is a second concrete internal support in the prior art. The second concrete internal support is a commonly used temporary support structure in deep foundation pit 14 projects or large building foundation construction. The two ends of the crossbeam 5 along its length are located on the side faces of the foundation pit 14. A second sedimentation tank 2 is temporarily installed on the second concrete internal support for purifying the sewage inside the foundation pit 14. Alternatively, as an alternative implementation, the crossbeam 5 can also be a first concrete internal support. Additionally, as an alternative implementation, the support device also includes: a column, which supports the crossbeam 5 and is vertically installed. The upper end of the column abuts against the crossbeam 5, and the lower end abuts against the foundation pit 14. Alternatively, as an alternative implementation, the crossbeam 5 can also be an H-beam. After the crossbeam 5 is bolted to the second concrete internal support, the second sedimentation tank 2 is installed on the crossbeam 5.
[0035] like Figure 1 As shown, in this embodiment, the crossbeams 5 are arranged in a crisscross pattern, forming multiple grooves between them. The second sedimentation tank 2 is disposed within these grooves, and the crossbeams 5 serve as temporary structural supports for the second sedimentation tank 2. This allows for efficient utilization of the second concrete internal support structure, making the construction and installation of the second sedimentation tank 2 more convenient. Alternatively, as an alternative implementation, the crossbeams 5 can also be two parallel, spaced-apart beams, with the second sedimentation tank 2 disposed between the two crossbeams 5.
[0036] like Figure 2 , Figure 3 As shown, in this embodiment, the second sedimentation tank 2 includes: a first concrete layer 6, an isolation layer 7, and a second concrete layer 8. The first concrete layer is a crossbeam, the isolation layer 7 is laid in the groove, and the isolation layer 7 is a 3mm thick tarpaulin. After the second concrete layer is poured, it forms the receiving cavity of the second sedimentation tank, with an opening at the top. The function of the isolation layer 7 is to prevent the first concrete layer 6 and the second concrete layer 8 from sticking together when the second sedimentation tank 2 is disassembled later, ensuring that it can be removed quickly and effectively. Alternatively, as an alternative implementation, the isolation layer 7 can also be a polyvinyl chloride (PVC) roll.
[0037] Construction process of the second sedimentation tank 2:
[0038] (1) Excavate the earthwork to the bottom of the inner support beam and reserve the height of the cushion layer. The excavation edge is sloped with a slope of 1:0.5 to meet the stability requirements.
[0039] (2) Measurement and layout.
[0040] (3) Pour 10mm thick C20 concrete as the bottom pad of the supporting beam, and cover the pad with a 3mm thick tar paper isolation layer 7 to prevent the pad from sticking to the concrete structure later.
[0041] (4) Inner support beam and sedimentation tank bottom plate reinforcement binding.
[0042] (5) Formwork installation.
[0043] (6) Concrete pouring.
[0044] (7) Removal of inner support and sedimentation tank bottom formwork.
[0045] Specifically, as shown in Figure 2 , in the second concrete inner support, a 200mm thick reinforced concrete plate is added at the bottom of the area surrounded by the main beam and the secondary beam, with a C20mm@200mm×200mm steel mesh 15 inside and A8@400mm×400mm reinforcing bars 16 attached. The plate steel must be anchored into the inner support beam for 35d to form a reliable connection, serving as the bottom plate of the second sedimentation tank 2.
[0046] As shown in Figure 1 , in this embodiment, the water pumping device is composed of two main parts, namely the first water pump 9 assembly and the second water pump 11 assembly. The water inlet of the first water pump 9 assembly is directly connected with the first sedimentation tank 1, ensuring smooth introduction of water source. Through the water outlet of the first water pump 9 assembly, the water flow is guided into the first water pipe and finally discharged into the second sedimentation tank 2. The water quality is further purified by the sedimentation effect of the second sedimentation tank 2. The second water pump 11 assembly is responsible for further treatment and transfer of water in the second sedimentation tank 2, and its water inlet is also connected with the second sedimentation tank 2 to ensure the introduction of water flow. After being pressurized and transported by the second water pump 11 assembly, the water outlet directs the treated water flow to the third sedimentation tank 3 for further purification. The design of the entire water pumping device fully considers the continuity of water flow and the purification effect, and through the cooperative work of the two water pump assemblies and the three sedimentation tanks, a high-efficiency and stable water treatment process is realized. In addition, as an alternative embodiment, the water pumping device also includes a control unit that can automatically adjust the working state of the water pump according to the preset program or real-time monitoring of water quality parameters. For example, when the water level of the first sedimentation tank 1 reaches a certain height, the control unit will start the first water pump 9 assembly to pump water to the second sedimentation tank 2; when the water level of the second sedimentation tank 2 reaches the set value, the control unit will start the second water pump 11 assembly to continue to transport water to the third sedimentation tank 3. This automatic control ensures the continuity and efficiency of the entire water pumping process, reduces the need for manual intervention, and improves the stability and reliability of the system.
[0047] As shown in Figure 1As shown, in this embodiment, the first water pump 9 assembly mainly consists of two parts: the first water pump 9 and the first connecting pipe 10. The first water pump 9 is placed inside the first sedimentation tank 1 to facilitate its efficient pumping operation. When the first water pump 9 starts working, the pumped water flows through the first connecting pipe 10 to the second sedimentation tank 2, completing the water treatment process from the first sedimentation tank 1 to the second sedimentation tank 2. In the second sedimentation tank 2, impurities and suspended solids in the water are further removed to ensure that the water quality reaches a higher cleanliness standard. Alternatively, as an alternative implementation, since the first sedimentation tank 1 has a large amount of sludge, a filter screen can be installed at the inlet of the first connecting pipe 10.
[0048] like Figure 1 As shown, in this embodiment, the second water pump 11 assembly includes: a second water pump 11 and a second connecting pipe 12. The second water pump 11 is placed in the second sedimentation tank 2. The inlet of the second connecting pipe 12 is connected to the outlet of the second water pump 11, and the outlet of the second connecting pipe 12 is located in the second sedimentation tank 2. The inlet of the second water pump 11 is higher than the outlet of the first connecting pipe 10, so that the sewage introduced from the first sedimentation tank 1 settles downwards. The inlet of the second water pump 11 can draw the clearer water from the upper layer to the third sedimentation tank 3. The outlet of the second connecting pipe 12 is connected to the top of the third sedimentation tank 3. In addition, as an alternative embodiment, the second water pump 11 assembly also includes a filter for filtering impurities and particulate matter in the water. In addition, as an alternative embodiment, the second water pump 11 assembly also includes a sensor for monitoring the operating status of the second water pump 11 assembly, such as parameters like water temperature, water pressure, and flow rate.
[0049] Specifically, the third sedimentation tank 3 is a portable bucket, with the outlet of the second pipe 12 connected to the top of the bucket, and the drain pipe 4 located on the side face below the bucket. By setting the third sedimentation tank 3 as a bucket, the location of the third sedimentation tank 3 can be more easily selected, and it can be adjusted in a timely manner according to different construction sites.
[0050] like Figure 1 As shown, in this embodiment, a protective fence 13 is provided around the first sedimentation tank 1. The protective fence 13 is a fence in the prior art to ensure the safety of operators. The height of the protective fence 13 is sufficient to prevent personnel from accidentally falling into the sedimentation tank, and warning signs are provided on the fence to remind staff to pay attention to safety. In addition, as an alternative implementation, a dedicated cleaning port is provided on one side of the sedimentation tank to facilitate regular cleaning and maintenance of the sediment. In addition, as an alternative implementation, the bottom of the first sedimentation tank 1 is designed with an inclined angle to facilitate the collection and cleaning of sediment.
[0051] The water purification construction process comprises the following steps: firstly, the inner supporting beam is laid out, then the inner supporting beam and the bottom plate steel bar of the sedimentation tank are bound, and then the concrete is poured and the formwork is removed. After that, the foundation pit 14 is excavated to the bottom and the water collecting pit is excavated to form the first sedimentation tank 1, the sewage is drained to the first sedimentation tank 1, and then the sewage is pumped to the second sedimentation tank 2 of the inner supporting beam. Next, the purified sewage is pumped into the third sedimentation tank 3 at the top of the foundation pit 14. If necessary, a water purification agent (such as alum) can be added to the third sedimentation tank 3, and finally the purified sewage is discharged to the municipal pipeline.
[0052] By installing the construction sedimentation tank on the second concrete inner support, we can effectively save the space occupied by the sedimentation tank in the site. The vertical space is fully utilized, so that the sedimentation tank which originally needs a large amount of plane space can be expanded in the vertical direction. This design not only saves the site area, but also provides more possibilities for the arrangement of other facilities, thereby further improving the layout efficiency and construction efficiency of the whole construction site.
[0053] Obviously, the above embodiments are only examples for the sake of clarity, and are not limited to the embodiments. Based on the above description, those skilled in the art can make other different forms of changes or variations. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.
Claims
1. A sewage purification device for a foundation pit for sewage treatment of a foundation pit (14), characterized by, The utility model relates to a kind of water treatment systems, including: First sedimentation tank (1) is arranged in the foundation pit (14); Supporting device is arranged on the side end surface of the foundation pit (14), at least one second sedimentation tank (2) is arranged on the supporting device, and the height of the second sedimentation tank (2) is higher than that of the first sedimentation tank (1); At least one third sedimentation tank (3) is arranged on the top of the foundation pit (14), and the third sedimentation tank (3) has a drain pipe (4) for discharging sewage; The water pumping device is connected with the first sedimentation tank (1), the second sedimentation tank (2) and the third sedimentation tank (3) respectively, and the water pumping device is used to pump the water in the first sedimentation tank (1) to the second sedimentation tank (2) and pump the water in the second sedimentation tank (2) to the third sedimentation tank (3).
2. The sewage purification device for a foundation pit according to claim 1, characterized by, The supporting device includes a crossbeam (5), and the two ends of the crossbeam (5) in the length direction are arranged on the side end surface of the foundation pit (14).
3. The sewage purification device for a foundation pit according to claim 2, characterized by, The crossbeam (5) is provided with a plurality of grooves, and the second sedimentation tank (2) is arranged in the grooves.
4. The sewage purification device for a foundation pit according to claim 1, characterized by The second sedimentation tank (2) includes a first concrete layer (6), a separation layer (7) and a second concrete layer (8).
5. The device for purifying sewage water for a foundation pit according to any one of claims 1 to 4, characterized in that, The water pumping device includes a first water pump (9) assembly and a second water pump (11) assembly, the water inlet of the first water pump (9) assembly is communicated with the first sedimentation tank (1), the water outlet of the first water pump (9) assembly is discharged into the second sedimentation tank (2) through a first water pipe, the water inlet of the second water pump (11) assembly is communicated with the second sedimentation tank (2), and the water outlet of the second water pump (11) assembly is communicated with the third sedimentation tank (3).
6. The device for purifying sewage water for a foundation pit according to claim 5, wherein The first water pump (9) assembly includes a first water pump (9) and a first pipe (10), the first water pump (9) is placed into the first sedimentation tank (1), the inlet of the first pipe (10) is communicated with the water outlet of the first water pump (9), and the outlet of the first pipe (10) is arranged in the second sedimentation tank (2).
7. The device for purifying sewage water for a foundation pit according to claim 6, characterized by The second water pump (11) assembly includes a second water pump (11) and a second pipe (12), the second water pump (11) is placed into the second sedimentation tank (2), the inlet of the second pipe (12) is communicated with the water outlet of the second water pump (11), and the outlet of the second pipe (12) is arranged in the second sedimentation tank (2); The water inlet of the second water pump (11) is higher than the outlet of the first pipe (10).
8. The device for purifying sewage water for a foundation pit according to any one of claims 1 to 4, characterized by, The first sedimentation tank (1) is provided with a protective fence (13) around.